# Manage Users
Source: https://docs.campaigncleaner.com/account-info/manage-users

Effectively manage your users with Campaign Cleaner. Gain control over user permissions, roles, and settings, ensuring team collaboration and security.

# User Management And Roles

[Campaign Cleaner](https://campaigncleaner.com) provides you the capability to include additional users in your account to assist in the management and enhancement of your campaigns. We designate two roles: `administrators` and `users`.

<img alt="manage-user-.png" />

**Administrators**, fundamentally, have complete access and control over the account. This includes the ability to purchase and cancel subscriptions, create API Keys, view invoices, manage users, among other tasks.

**Users**, on the other hand, have more limited access. They can optimize any campaigns, manage the CDN and utilize the API Keys allocated to them.


# Securing Your Account
Source: https://docs.campaigncleaner.com/account-info/securing-your-account

Discover comprehensive security measures, easy-to-follow guidelines, and advanced tools to safeguard your account against unauthorized access.

## Account Creation Process

[Campaign Cleaner](https://campaigncleaner.com) provides two methods for creating an account:

1. **Email and Password** - A password of a minimum length of 8 characters is required, although we recommend using at least 12 characters, combining uppercase and lowercase letters, numbers, and special characters. All password are stored salted and one-way hashed with a high PBKDF2 iteration count.

2. **Sign in with Google** - Google manages the authentication process, disclosing only your email address and account name to us. Since Google is responsible for authentication, you won't be able to alter your password or set up TOTP 2FA through our system. However, you can make these changes within your Google account.

## TOTP 2FA (Two Factor Authentication)

You have the choice to activate `TOTP 2FA` for enhanced security. We recommend turning this option one. You can use your favorite TOTP program like Google Authenticator, Authy, and others.

Should you initially sign up with a email/password account and later opt to use Sign In With Google, your account will be transitioned to a Google sign-in account, if the email address matches. You will no longer have the ability to log in using email and password.

If you signed in with Google and want to revoke access to Campaign Cleaner, you can do that in your google account under `security -> Signing in to other sites -> Sign in with Google`. Revoking access doesn't delete your account, it will just make you grant access to Campaign Cleaner to sign in again.

## Deleting your Account

You can delete your account under Account Info -> Settings.


# Create Inbox Test
Source: https://docs.campaigncleaner.com/api-reference/endpoint/create-inbox-test

POST /v1/create_inbox_test
The **create_inbox_test** API allows you to create a new inbox placement test. Once created, you will receive a list of seed email addresses to send your campaign to. After sending your campaign to all addresses in the **send_to** list, you can use the **get_inbox_test_results** API to retrieve the placement results.

This endpoint requires an active Campaign Cleaner subscription or a standalone Inbox Placement Tester subscription. One API credit will be deducted per test created.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:
_Required:_
- **test_name**: The name of your inbox test - maximum 255 characters.
#### Response:
- **job_id**: The unique ID of the inbox test, used to retrieve results via the **get_inbox_test_results** API.
- **test_name**: The name you provided for the test.
- **mailtester_address**: The unique monitoring address that must be included in your send list. This is already included in the **send_to** array.
- **instructions**: A description of what to do next.
- **send_to**: An array of all seed email addresses including the **mailtester_address**. Send your campaign to every address in this list.

In the event of an error, you will get an "**error**:" response with a description of the reason.



# Delete Campaign
Source: https://docs.campaigncleaner.com/api-reference/endpoint/delete-campaign

POST /v1/delete_campaign
The **delete_campaign** API endpoint allows you to delete any of the campaigns in your saved campaigns in [Campaign Cleaner](https://campaigncleaner.com).
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:

**campaign**:

- **id**: The campaign id that will be deleted.
 

#### Response:

- **status**: _success_ or _failure,_ failures can occur when the **campaign_id** doesn't exists or was deleted.
 

In the event of an error, you will get an "**error**:" response, with a description of the reason.



# Get Campaign
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-campaign

POST /v1/get_campaign
The **get_campaign** API allows you to retrieve any of your Saved Campaigns in [Campaign Cleaner](https://campaigncleaner.com). The response below is a real example of a newsletter that "Postman" sent us, overall it's a pretty good newsletter with a few issues, mainly image size and a couple of broken links.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:
_Required:_
**campaign**:

- **id**: The campaign id that will be used in other API calls.
 
_Optional:_
**campaign**:
- **minimize_html**: (true/false) If true (default), removes all whitespace, tabs, etc. Condensing the HTML.
#### Response:

**campaign:**

- **adjust_font_colors**: (true/false), If true, certain bright colors are spam triggers, like "**red**" or "**#FF0000**", was adjusted to a slightly different color like "**#FF0101"**, it will look the same, but won't trigger some spam filters.
- **adjust_font_size**: (true/false) If true, The min and max font size defined below in pixels were applied. If your newsletter contains larger or small font's it was adjusted to the min/max you define.
- **all_capitalized_word_ratio**: (double) The ratio of all capitalized words to total words in your campaign.
- **all_capitalized_words**: (integer) The number of capitalized words found in your campaign.
- **all_capitalized_word_max_acceptable_ratio**: (double) The max acceptable ratio of all capitalize words to total words in your campaign.
- **all_link_list:** (list of links) All the links found in the campaign (images, text, etc.)
   - **link_url**: (string) The URL or location of the broken link.
   - **link_status**: (string) The status code of the link, please view the status guide below.
   - **link_redirected_url**: (string) The location of where the link was redirected to, empty string, if it wasn't redirected.
   - **link_is_image**: (true/false) True, if the link is used as an image.
   - **link_is_broken**: (true/false) True, if the link was non-functional at the time of the scan.
   - **link_initial**: (true/false) True, if the link was the initial link in the campaign, not an intermediate or final link, if redirected.
   - **link_count**: (integer) The number of times this link was found.
   - **link_secure:** (true/false) true, if the link is HTTPS.
   - **link_tel:** (true/false) true, if the link is tel:
   - **link_mailto:** (true/false) tru, if the link is mailto:
- **bg_images_found**: (integer) The number of background images found, some major email clients don't support background images.
- **bg_image_list**: (List of images) All the background images found
  - **image_url**: (string) The URL of where the image is located.
  - **image_size** (long) The size of the image in Kilobytes (KB)
  - **image_width**: (integer) The width of the image.
  - **image_height**: (integer) The height of the image.
  - **image_rendered_width**: (integer) The rendered width of the image.
  - **image_rendered_height**: (integer) The rendered height of the image.
  - **image_background**: (true/false) Will always be true, since this is a background image.
  - **image_type**: (Integer) 1=png, 2=jpeg, 3=gif, 4=bmp, 5=svg, 6=avif, 7=tif, 8=webp, 9=apng, 10=heic, 11=icon, 12=base64, -1=Unknown
- **blacklisted_links**: (list of blacklisted links) Links that are on blacklists and their properties.
  - **bl_url**: (string) The web address where the blacklist is located.
  - **bl_name**: (string) The name of the blacklist
  - **link_url**: (string) The link in the campaign that is on a blacklist, can be a redirected link.
- **blacklisted_links_found**: (integer) The total number of blacklisted links found.
- **broken_links**: (list of links) All the broken links found in the campaign.
  - **link_url**: (string) The URL or location of the broken link.
  - **link_status**: (string) The reason why the link was considered broken, please view the status guide below.
  - **link_redirected_url**: (string) The location of where the link was redirected to, empty string, if it wasn't redirected.
  - **link_is_image**: (true/false) true, if the link is used as an image.
  - **link_is_broken**: (true/false) true, if the link was non-functional at the time of the scan.
  - **link_initial**: (true/false) true, if the link was the initial link in the campaign, not an intermediate or final link, if redirected.
  - **link_count**: (integer) The number of times this link was found.
  - **link_secure:** (true/false) true, if the link is HTTPS.
  - **link_tel:** (true/false) true, if the link is tel:
  - **link_mailto:** (true/false) tru, if the link is mailto:
- **campaign_id**: The campaign id that will be used in other API calls.
- **campaign_html:** (string) The adjusted HTML of the campaign, with all the fixes that were selected.
- **campaign_name**: (string) The name the campaign was saved with.
- **campaign_summary**: (list of messages) A quick summary of some of the changes that were applied and some analysis highlights.
 - **apply_count**: (true/false) If true, the count column apples to the message as the number of occurrences found. If false, the count will be zero, and the message is a statement of what happened.
 - **count**: (integer) The total occurrences that was found or corrected.
 - **html_changed**: (true/false) Indicates if the Campaign HTML was changed to correct the issue.
 - **message**: (string) The change or analysis that took place that indicating something change or something should be looked into further.
- **convert_h_to_p_tags**: (true/false) If true, this will change all the H tags to P tags and set the correct font-size.
- **convert_tables_to_divs:** (true/false) **\-** This is an experimental feature to convert all the tables to divs, in certain instances with a complicated table structure you might need to edit the HTML. We recommend leaving this as false or not setting it.
- **custom_info**: The values you passed us when calling the **send_campaign** API
- **domains_scanned**: (array of strings) The domains that were scanned at different blacklists.
- **header_tags_count**: (integer) The number of header tags found in the campaign, header tags displays are not consistent across email clients, use "**div**" or "**p**" tags styled correctly instead.
- **host_extensionless_images:** (true/**false**) If true, images without extensions will be hosted on our CDN when the **resize_and_host** parameter is set to true. Typically, dynamically generated images lack extensions, though there are exceptions.
- **inline_css:** (**true**/false) When set to true, CSS styles are directly applied within the style attribute of each HTML element.
- **inline_css_important:** (true/**false**) When set to true, the `!important` flag will also be inlined with CSS styles. If you are using media queries, it is generally recommended to keep this set to false.
- **media_queries_important:** (**true**/false) When set to true, all media query styles will be marked with the `!important` flag. This ensures they can override any inline CSS without an `!important` flag.
- **image_count**: (integer) The total number of images found in your campaign including background images.
- **image_max_width**: (integer): The max-width style applied to all images in pixels.
- **images_missing_alt_attribute:** (integer) The number of images missing or have an empty **"alt"** attribute.
- **image_list**: (list of images) A list of all images found and their properties.
  - **image_url**: (string) The URL of where the image is located.
  - **image_size** (long) The size of the image in Kilobytes (KB)
  - **image_width**: (integer) The width of the image.
  - **image_height**: (integer) The height of the image.
  - **image_background**: (true/false) True, if this is a background image, otherwise
  - **image_type**: (Integer) 1=png, 2=jpeg, 3=gif, 4=bmp, 5=svg, 6=avif, 7=tif, 8=webp, 9=apng, 10=heic, 11=icon, 12=base64, -1=Unknown
  - **image_rendered_width**: (integer) The rendered width of the image.
  - **image_rendered_height**: (integer) The rendered height of the image.
  - **links_missing_title_attribute** : (integer) The number of links
missing the **"title"** attribute.
- **links_scanned**: (integer) The total number of links scanned, images, text, and redirects.
- **os_images_found**: (integer) The number of oversized images found in your campaign, slowing down the loading of your campaign.
- **pd_cdn_list**: (List of links on Poor delivery CDNs) Links that point to CDNs that are known to affect delivery.
   - **pd_cdn_name**: (string) The name of the CDN that can affect delivery.
   - **pd_cdn_url**: (string) The URL or Location the CDN uses to host content.
- **min_font_size_allowed**: (A positive Integer, under 100) in pixels.
- **max_font_size_allowed**: (A positive Integer under 100) in pixels.
- **os_image_list**:(list of images) All the oversized images in the campaign
  - **image_url**: (string) The URL of where the image is located.
  - **image_size** (long) The size of the image in Kilobytes (KB)
  - **image_width**: (integer) The width of the image.
  - **image_height**: (integer) The height of the image.
  - **image_background**: (true/false) True, if this is a background image, otherwise false.
  - **image_type**: (Integer) 1=png, 2=jpeg, 3=gif, 4=bmp, 5=svg, 6=avif, 7=tif, 8=webp, 9=apng, 10=heic, 11=icon, 12=base64, -1=Unknown
  - **image_rendered_width**: (integer) The rendered width of the image.
  - **image_rendered_height**: (integer) The rendered height of the image.
- **pd_cdns_found**: (integer) The number of content delivery networks found, known to cause adverse delivery issues.
- **pd_cdns_link_count**: (integer) The total number of links pointed to content delivery networks know to cause adverse delivery issues.
- **preserve_media_queries**: (true/false) True, if all media queries were preserved.
- **relative_links_base_url**: If set, this needs to be a full base URL like "[https://campaigncleaner.com/"](https://campaigncleaner.com/), if your email campaign has any relative paths, it will be converted to an absolute URL. In most instances, you won't need to set this.
- **remove_successive_punctuation**: (true/false) if true, this will remove succession punctuation like ..., !!!!, $$$ to a single occurrence.
- **remove_css_inheritance**: (true/false) If true, removes all elements of CSS that are inherited. Once CSS is inlined, the inherited CSS will be removed, for example if font-size of a parent tag is 15 pixels, there is no need for the font-size of the child tag to be specified as 15 pixels because it's inherited or computed from the parent tag, this reduces the size of your HTML Campaign.
- **remove_classes_and_ids**: (_true_/false) If true, all the class and ID attributes after CSS Inlining was removed.
- **remove_comments**: (true/false) If true, comments were stripped from both CSS and HTML. Comments are invisible in HTML and can trigger spam filters.
- **remove_control_non_printable:** (true/false) If True, call non-printable and control characters are removed.
- **remove_image_height:** (true/false) if true, the height style was removed from all images, preventing any image distortions.
- **remove_large_widths_over**: (integer) Experimental: If sets removes all defined widths over the value set on non images and table tags.
- **replace_diacritics**: (true/false) If true, diacritic characters like á were replaced with a normal characters equivalent.
- **replace_non_ascii_characters**: (true/false) If true, all non-ascii characters were replaced with their ascii equivalent. For example, ❝ was replaced with **".** Non-ascii characters is of of the major spam trigger.
- **resize_and_host**: (true/false) If true, all eligible images were resized, converted, and hosted on our CDN. Read more about this here: [Resize And Host](https://docs.campaigncleaner.com/features-settings/resize-and-host)
- **spam_words_count**: (integer) The total number of spam words found in your campaign.
- **spam_keyword_list**: (List of Spam Keywords) (keyword (string), count (integer) Array of all spam keywords found and the number of times they were found.
  - **keyword**: The spam Keyword or phrase.
  - **count**: The number of occurrences of the spam keyword.
- **spam_keyword_ratio**: (double) The spam keyword ratio of the campaign.
- **spam_keyword_max_acceptable_ratio**: (double) The max acceptable ratio for spam keywords for any campaign.
- **successive_currency_marks**: (integer) The number of successive currency marks found "$$".
- **successive_exclaimations**: (integer) The number of successive exclamation points found "!!".
- **successive_question_marks**: (integer) The number of successive question marks found "??".
- **successive_periods**: (integer) The number of successive periods found "..".
- **surrounding_div**: A surrounding "div" added to your html with the following styles added.
   - **max_width**: The max-width style in pixels applied to the surrounding "div".
   - **text_align**: (left, center, right) All content within the surrounding "div" will be aligned according to the specified style. However, this can be over-written but setting "text-align" property on inner tags within the "div" to customize the appearance of your email.
   - **font_size**: The pixel size that set in the surrounding div to adhere to, this adds an "!important" to all font-sizes that are set on any tag in the HTML to maintain the font you want. While setting all unspecified font sizes to the size you choose.
   - **center_to_parent**: (true/false) If true, this will enable the surrounding "div" to be centered in any parent tags in which it is placed. This is particularly helpful when inserting an HTML snippet into a template
  - **text_link_max_acceptable_ratio**: (double) the max acceptable text
to link ratio for any campaign.
- **text_link_ratio**: (double) The text to link ratio of your campaign.
- **text_image_max_acceptable_ratio**: (double) the max acceptable text to image ratio for any campaign.
- **text_image_ratio**: (double) The text to image ratio of your campaign.
- **total_word_count**: (integer) The total number of words found in your campaign.

#### Additional Information:

**HTTP Status Codes:** [https://developer.mozilla.org/en-US/docs/Web/HTTP/Status](https://developer.mozilla.org/en-US/docs/Web/HTTP/StatusIn)

In addition to status codes listed in the document above.

| **Status Code** | **Description** |
| --- | --- |
| 97 | Telephone Links start with tel: |
| 98 | Email links, starts with mailto: |
| 99 | Invalid URL - The provided website address is not valid. It may be a partial address, missing the necessary protocols (http or https), or has an incorrect format. |



# Get Campaign List
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-campaign-list

GET /v1/get_campaign_list
The **get_campaign_list** API endpoint allows you to get the status of all the campaigns you have saved on [Campaign Cleaner](https://campaigncleaner.com).
#### Header:
**X-CC-API-Key**: Your API Key

#### Response:

**campaign_list**:

- **id**: The campaign id that will be used in other API calls.
- **campaign_name**: The name of the campaign.
- **status**: The status will be either _processing_, _completed_, or _paused_
- **date_added**: The date and time your campaign was saved or submitted to Campaign Cleaner.
 

If the **status** is _completed_, you will be able to retrieve the campaign via the **get_campaign** API

In the event of an error, you will get an "**error**:" response, with a description of the reason



# Get Campaign PDF Analysis
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-campaign-pdf-analysis

POST /v1/get_campaign_pdf_analysis
The **get_campaign_pdf_analysis** API allows you to retrieve the analysis report for any of your Saved Campaigns in Campaign Cleaner.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:
**campaign**:
- **id**: The campaign id that will be used in other API calls.
#### Response:
An Application/pdf stream.



# Get Campaign Status
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-campaign-status

POST /v1/get_campaign_status
After submitting a campaign to be corrected and analyzed it can take up to a minute to finalize the results. You can check the status of your campaign with the **check_campaign_status** API. When you see a 'completed' status, you can call the **get_campaign** API to retrieve the results.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:

**campaign**:

- **id**: The Campaign ID that you want to get the status for.
 

#### Response:

**campaign_list**:

- **id**: The campaign id that will be used in other API calls.
- **campaign_name**: The name of the campaign.
- **status**: The status will be either _processing_, _completed_, or _paused_
- **date_added**: The date and time your campaign was saved or submitted to [Campaign Cleaner](https://campaigncleaner.com).
 

If the **status** is _completed_, you will be able to retrieve the campaign via the **get_campaign** API

In the event of an error, you will get an "**error**:" response, with a description of the reason



# Get Credits
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-credits

GET /v1/get_credits
The **get_credits** API will show you how many credits you currently have available. Credits are consumed by calling the **send_campaign** API endpoint.

#### Response:

- **Credits**: The amount of available credits you have on your account.
 

In the event of any other error, you will get an "**error**:" response, with a description of the reason.



# Get Inbox Test Results
Source: https://docs.campaigncleaner.com/api-reference/endpoint/get-inbox-test-results

POST /v1/get_inbox_test_results
The **get_inbox_test_results** API allows you to retrieve the placement results for an inbox test created via the **create_inbox_test** API. Results are populated as seed mailboxes receive your campaign, so you may call this endpoint multiple times until the **status** is _Completed_.

A **status** of _Processing_ means not all seed mailboxes have received your campaign yet. Check back in a few minutes. If some seeds never receive the email, the **status** will remain _Processing_ — ensure your campaign was sent to all addresses in the **send_to** list.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:
_Required:_
- **job_id**: The job ID returned from the **create_inbox_test** API.
#### Response:
- **job_id**: The unique ID of the inbox test.
- **test_name**: The name of the inbox test.
- **submitted_date**: The date and time the test was created.
- **submitted_by**: The email address of the account that created the test.
- **status**: Either _Processing_ or _Completed_.
- **summary**: A high-level breakdown of results.
   - **total_seeds**: The total number of seed mailboxes in the test.
   - **received**: The number of seeds that have received the campaign so far.
   - **inbox**: The number of seeds where the campaign landed in the inbox.
   - **spam**: The number of seeds where the campaign landed in spam or junk.
   - **unknown_placement**: The number of seeds that received the email but placement could not be determined.
   - **pending**: The number of seeds still waiting to receive the campaign.
   - **inbox_rate**: The percentage of total seeds where the campaign landed in the inbox.
   - **spam_rate**: The percentage of total seeds where the campaign landed in spam.

- **results**: A detailed per-seed breakdown.
   - **provider**: The email provider name (e.g. Gmail, Outlook, Yahoo).
   - **seed_address**: The seed email address.
   - **email_found**: (true/false) Whether the campaign was received by this seed.
   - **placement**: Where the campaign landed - Inbox, Spam, or Pending.
   - **spf_status**: The SPF authentication result for this seed.
   - **sender_ip**: The IP address the campaign was sent from.
   - **submission_result**: Additional detail about the submission result for this seed.


In the event of an error, you will get an "**error**:" response with a description of the reason.



# Send Campaign
Source: https://docs.campaigncleaner.com/api-reference/endpoint/send-campaign

POST /v1/send_campaign
The **send_campaign** API Endpoint allows you to send in a campaign to be processed and analyzed by [Campaign Cleaner](https://campaigncleaner.com). Below is the list of settings that can be set, all optional settings, if not specified will default to the bold/italicized setting.

All submitted campaigns will be sanitized.
#### Header:
**X-CC-API-Key**: Your API Key
#### Request Body:

_Required:_

**send_campaign**:

- **campaign_html** : The full HTML of your campaign
- **campaign_name**: The name of your campaign - campaign name must pass our sanitization checks.
 

Campaigns are normally processed in under 2 minutes, in most instances in a few seconds. But in some cases with very large campaigns with lots of images and links it can take longer to check those links for blacklists, redirects. image sizes and more. Depending on the server where those links resources are located it can take longer. The send campaign, will return a campaign ID once we received it, you can use that campaign ID to check on the status, and retrieve your campaign when it's finished processing or you can supply us a webhook URL and we will send the results to you automatically.

_Optional:_

**send_campaign**:

- **adjust_font_colors**: (_**true**_/false), If true, certain bright colors are spam triggers, like "**red**" or "**#FF0000**", will be adjusted to a slightly different color like "**#FF0101"**, it will look the same, but won't trigger some spam filters.
- **adjust_font_size**: (_**true**_/false) If true, you will be able to define the min and max font size allowed in pixels. If your newsletter contains larger or small font's it will adjust them to the min/max you define.
- **convert_h_to_p_tags**: (true/**false**) If true, this will change all the H tags to P tags and set the correct font-size.
- **convert_tables_to_divs:** (true/**false**) - This is an experimental feature to convert all the tables to divs, in certain instances with a complicated table structure you might need to edit the HTML. We recommend leaving this as false or not setting it.
- **custom_info:** This field is for you to pass any additional data you want to send us, it will also be passed back to you when you call the get_campaign API. It's limited to 500 characters. - It must pass our sanitization checks.
- **host_extensionless_images:** (true/**false**) If true, images without extensions will be hosted on our CDN when the **resize_and_host** parameter is set to true. Typically, dynamically generated images lack extensions, though there are exceptions.
- **inline_css:** (**true**/false) When set to true, CSS styles are directly applied within the style attribute of each HTML element.
- **inline_css_important:** (true/**false**) When set to true, the `!important` flag will also be inlined with CSS styles. If you are using media queries, it is generally recommended to keep this set to false.
- **media_queries_important:** (**true**/false) When set to true, all media query styles will be marked with the `!important` flag. This ensures they can override any inline CSS without an `!important` flag.
- **image_max_width:** (int) When this is specified, it will add an max-width style to all images. it is not desirable for the image width to exceed the default campaign width.
- **min_font_size_allowed**: (_**10**_) (A positive Integer, under 100) The **min_font_size** must be smaller or equal to the **max_font_size** in pixels
- **max_font_size_allowed**: (_**32**_) (A positive Integer under 100) The **max_font_size** must be larger or equal to the **min_font_size** in pixels
- **preserve_media_queries**: (_**true**_/false) True, if media queries should be preserved.
- **remove_classes_and_ids**: (_**true**_/false) If true, removes all the class and ID attributes after CSS Inlining.
- **remove_comments**: (_**true**_/false), If true, comments are stripped from both CSS and HTML. Comments are invisible in html and can trigger spam filters.
- **remove_css_inheritance**: (_**true**_/false) If true, removes all elements of CSS that are inherited. Once CSS is inlined, the inherited CSS will be removed, for example if font-size of a parent tag is 15 pixels, there is no need for the font-size of the child tag to be specified as 15 pixels because it's inherited or computed from the parent tag, this reduces the size of your HTML Campaign.
- **remove_control_non_printable:** (**true**/false) If true, all non-printable and control characters are removed.
- **remove_image_height:** (true/**false**) If true, the height style is removed from all images, preventing any image distortions. Only the width property should be set on images sent in emails.
- **remove_large_widths_over**: (integer) Experimental: If sets removes all defined widths over the value set on non images and table tags.
- **remove_successive_punctuation**: (true/**false**) If true, this will remove succession punctuation like ..., !!!!, $$$ to a single occurrence.
- **relative_links_base_url**: If set, this needs to be a full base URL like "[https://campaigncleaner.com/"](https://campaigncleaner.com/), if your email campaign has any relative paths, it will be converted to an absolute URL. In most instances, you won't need to set this.
- **replace_diacritics**: (**true**/false) If true, replaces diacritic characters like á with normal characters equivalent, if you're sending emails in English emails, this is a must.
- **replace_non_ascii_characters**: (**true**/false) If true, replaces all non-ascii characters with their ascii equivalent. For example, ❝ will be replaced with **".** Non-ascii characters is of of the major spam trigger.
- **resize_and_host**: (true/**false**) If true, we will resize, convert, and host all eligible images on our CDN. Please read our documentation here: [Resizing and Hosting](https://docs.campaigncleaner.com/features-settings/resize-and-host)
- **surrounding_div:** When you set any parameter of the surrounding div, it will add "div" tag around your html with the styles you set. This is helpful to set default styles and conditions that can affect the look of your html.
  - **max_width:** The max-width style applied to the surrounding "div" can be specified in pixels as an integer value. It is typically set to the desired maximum width of the campaign, which is commonly either 600 or 900 pixels.
  - **text_align**: (left, center, right) All content within the surrounding "div" will be aligned according to your specified style. However, you can use the "text-align" property on inner tags within the "div" to customize the appearance of your email.
  - **font_size:** The pixel size that you want everything in the surrounding div to adhere to, setting this, will add an "_!important"_ to the font-size in the surrounding "div". Font sizes that are set on any tag in the HTML will retain their original size. While all unspecified font sizes to the size you chose.
  - **center_to_parent:** (true/false) Using this feature will enable the surrounding "div" to be centered in any parent tags in which it is placed. This is particularly helpful when inserting an HTML snippet into a template.

- **webhook_url**: An endpoint that you provide us and when your campaign is fully processed we will send the results back that is found in the Get Campaign API. You can utilize the webhook section under API Management to troubleshoot and test your endpoint.
 
#### Header:
**X-CC-API-Key**: Your API Key
#### Response:

**campaign:**

- **id**: The campaign id that will be used to retrieve your campaign using the get_campaign API.



# API Documentation
Source: https://docs.campaigncleaner.com/api-reference/introduction

We offer a robust collection of APIs to allow you to integrate its functionality into your email marketing software and tools.

[Campaign Cleaner](https://campaigncleaner.com) is the leader in ensuring that your campaigns don't affect your IP and Domain reputation, it's the most advanced toolset you'll find that gives you all the tools you need to keep your campaigns within acceptable ratios of many email and spam filtering software and automatically fixes your HTML by sanitizing all non-email friendly attributes and inlines all your CSS to be compatible with every email client.

We offer a robust collection of API's to allow you to integrate its functionality into your email marketing software and tools.

The `{{api_key}}` is located in your account on [Campaign Cleaner](https://members.campaigncleaner.com) under API Management API Keys.

<Tip>
  Use the navigation on the left to access the different **API Endpoints**.
</Tip>

Or if you prefer we made our API Documentation available below.

<Card title="" href="https://campaign-cleaner.github.io/swagger/">
  <img alt="api-documentation-3.png" />
</Card>

**API Documentation Links:**

* [Swagger](https://campaign-cleaner.github.io/swagger/)


# Campaign Analysis
Source: https://docs.campaigncleaner.com/campaign-cleaner/campaign-analysis

Email Campaign Analysis provides a powerful tool for email marketers to analyze and optimize their HTML code.

# Understand Your Email Campaign Analysis

The HTML Analysis tab is organized into 9 user-friendly sections, with highlighted areas of concern in orange, so you can quickly identify and optimize your email campaign. Each section includes an "info" button for more details. Let's take a closer look at these sections

# Punctuation, Caps and H Tags

<img alt="punctuation-4.png" />

This section identifies common issues that can harm your email's deliverability by triggering spam filters. The ratios shown are the maximum recommended values, and it's always best to stay well below them.

All-caps words and successive punctuation are among the most heavily weighted conditions that can land your emails in spam folders or promotions tabs.

For more information about this section, please refer to the  [Punctuation, Caps and H Tags](/features-settings/punctuation-caps-h-tags) settings.

# Spam Keyword Ratio

<img alt="spam-keyword-ratio-1.png" />

This section highlights any spam keywords found in the content of your email campaign. While it's nearly impossible to have zero spam keywords, having an excessive amount of them can raise a red flag. For instance, if a particular spam keyword, such as "Free," is used multiple times in conjunction with other spam keywords, it can make your email appear very spammy and suspicious. In this example, "Free" is used 7 times, which is considered high and may result in a lower deliverability rate.

For more information about this section, please refer to the [Spam Trigger Detection](/features-settings/spam-trigger-detection) settings.

# Link Summary

<img alt="broken-links-2.png" />

This section conducts a comprehensive examination of every unique link in your email campaign, tracing each redirect until it arrives at the final destination. The goal of this scan is to confirm that there are no broken links in the sequence. You can conveniently view all the links, categorized, and their respective redirect destinations by clicking on the `#` next to each category.

It will also notifies you of how many links have missing `TITLE` attributes it discovered and how many unsecured links it discoverd, These details are crucial to informat the user what the links are about and unsecured links can pose a security risk to your subscribers.

For more information about this section, please refer to the [Broken Link Recursion Checker](/features-settings/link-summary) settings.

# Text To Link Ratio

<img alt="text-link-2.png" />

This section compares the number of links to the number of words found in your email and informs you if the ratio is above the maximum acceptable ratio. These details are crucial because having too many links can make your email look cluttered and unprofessional to your subscribers. The [Campaign Cleaner](https://campaigncleaner.com) provides you with an easy-to-read info card, highlighting these issues so that you can take action to optimize your email campaign.

For more information about this section, please refer to the [Text To Link Analysis](/features-settings/text-to-link-analysis) settings.

# Text to Image Ratio

<img alt="text-image-2.png" />

This section compares the number of images to the number of words found in your email and informs you if the ratio is above the maximum acceptable ratio. It also notifies you of how many images have missing `ALT` attributes. These details are crucial because having too many images can make your email look cluttered and unprofessional. The [Campaign Cleaner](https://campaigncleaner.com) provides you with an easy-to-read info card, highlighting these issues so that you can take action to optimize your email campaign.

For more information about this section, please refer to the [Text To Image Analysis](/features-settings/text-to-image-analysis) settings.

# Blacklisted Domains

<img alt="blacklist-recursion-3.png" />

In this section, we scan all links in your campaigns and their 301 redirects, checking them against various blacklists, phishing, and malware detection sites. This ensures that none of the links in your email pose a threat to your customers or your deliverability.

For more information about this section, please refer to the [Blacklist Link Recursion Checker](/features-settings/blacklisted-links) settings.

# Image Summary

<img alt="oversized-images-2.png" />

This section of the email analysis tool focuses on checking the images used in your campaign.

**Oversized Images:**

It highlights any images that are larger then the space defined in the HTML. Clicking on the `Oversized Image Lists` will provide you with a list of these images, they can automatically be resized and hosted on our super fast global CDN Edge powered by Cloudflare. Don't worry at a click of a button, the HTML is also updated with the new image location.

For more information about this section, please refer to the [Oversized Image Detection](/features-settings/image-summary) settings.

**Unsupported Images:**

* Background Images

This section enables you to promptly determine whether you have included any background images in your email campaign. It is essential to note that background images may not be visible in several mail clients, such as Gmail.

For more information about this section, please refer to the [Background Image Detection](/features-settings/background-image-detection) settings.

* Unsupported Formats

This feature will notify you if your email contains images in formats that are not broadly supported, such as .svg, .tiff, .heic, .avic, .apng, etc. Fear not, as our Resize and Host tool will automatically resize and convert these images to the universally supported .jpg format and host them on our ultra-fast global CDN edge powered by Cloudflare. The links in your email campaign will be seamlessly updated to reflect the new location.

For more information about this section, please refer to the [Unsupported Image Detection](/features-settings/unsupported-image-detection) settings.

# Poor Delivery CDN Detection

<img alt="poor-delivery-cdn-3.png" />

This section highlights any CDNs (Content Delivery Networks) used in your email campaign that may have poor performance or a bad reputation. These CDNs can negatively impact the speed and reputation of your email campaigns, potentially leading to lower engagement rates or your emails being marked as spam.

We understand that finding a new location to host your images can be challenging, so we offer you 5 GB of image hosting with any subscription. This service will automatically resize, host, and transfer your images to our high-speed global CDN edge, powered by Cloudflare.

For more information about this section, please refer to the [Poor Delivery CDN Detection](/features-settings/poor-delivery-cdn-detection) settings.


# Campaign Cleaner
Source: https://docs.campaigncleaner.com/campaign-cleaner/clean-campaign

Keep your email marketing campaigns in top shape with Campaign Cleaner. Optimize deliverability, design, and performance for better results.

<img alt="clean-campaign-1.png" />

[Campaign Cleaner](https://campaigncleaner.com) is a powerful email marketing tool designed to help businesses improve the performance of their email campaigns with a single click of the green button. With advanced features and intuitive interfaces, Campaign Cleaner makes it easy to optimize your email marketing strategies, streamline your workflows, and boost your ROI.

## Key Features

* **Advanced Cleaning Algorithms:** Campaign Cleaner automatically scans your email campaigns to identify and rectify issues such as broken links, missing images, and invalid HTML codes, ensuring flawless delivery to your subscribers.
* **AI Spam Trigger Detection:** The tool identifies keywords that could trigger spam filters, enhancing the likelihood of your emails landing in the inbox.
* **Resize, Convert and Host Images:** Campaign Cleaner optimizes your emails by automatically resizing and converting images to email-friendly formats. It also hosts the images on a fast global CDN, ensuring quick loading times and a visually appealing presentation in your campaign HTML.
* **Email Inbox Previews:** Preview your emails across various email clients and devices to ensure consistent rendering and formatting.
* **Accessibility Enhancements:** Features like ALT Tag Management ensure your emails are accessible and engaging even when images don't load.

## Integration and APIs

Campaign Cleaner offers powerful APIs and integrations, allowing seamless connectivity with CRM systems, ESP's, and can easily be implemented into your own custom workflows. This enables real-time tracking and analysis of your email campaigns, facilitating data-driven optimizations.

## Ready to enhance your delivery?

Campaign Cleaner has received accolades from various professionals, including Sales Managers, Marketing Specialists, and Business Owners, who commend its efficiency and impact on their email campaigns.

Whether you are a small business owner or a large enterprise, [Campaign Cleaner](https://campaigncleaner.com) is a valuable tool for any email marketer looking to take their campaigns to the next level. With its comprehensive suite of features and powerful integrations, Campaign Cleaner can help you save time, increase your ROI, and deliver more effective email campaigns to your subscribers. So why wait?

**Try [Campaign Cleaner](https://campaigncleaner.com) today and start optimizing your email marketing strategies like a pro!**


# Import Campaigns
Source: https://docs.campaigncleaner.com/campaign-cleaner/import-campaigns

Submitting campaigns through email to Campaign Cleaner is a simple and convenient way to optimize your email campaigns.

# Import an Existing Campaign

Submitting your campaign to Campaign Cleaner is easy! Simply follow the steps outlined under "Submit Campaign," and we'll analyze your email directly from your campaign software. This allows you to make any necessary changes and ensure your email is optimized before it reaches your audience.

<Note>
  If you import a campaign with [embedded images](/references/embedded-images), Campaign Cleaner will put those images on our Blazing Fast Public CDN and change the HTML to reference those images automatically.
</Note>

<img alt="import-campaign-1.png" />


# Saved Campaigns
Source: https://docs.campaigncleaner.com/campaign-cleaner/saved-campaigns

Keep track of your email campaign optimizations with saved campaigns. Easily access previous improvements to streamline your email marketing efforts.

# Saved Campaigns - Everything You Need to Know

This section enables you retreive all your saved email campaign and can store multiple versions of it for future reference. All campaigns submitted through email or API are saved in this section. You can easily load any saved campaign into the HTML editor by clicking on a `load` button or download it to a text file that can be imported into your email campaign tool.

With this feature, you can effortlessly manage and keep track of your saved email campaigns by sorting, searching, and deleting as needed. This allows you to make changes without having to start from scratch each time.

<img alt="saved-campaign-1.png" />


# Settings
Source: https://docs.campaigncleaner.com/campaign-cleaner/settings

Enhance the performance and deliverability of your email campaigns with advanced settings. Optimize your emails for better results.

# Campaign Cleaner Settings - You're In Control

[Campaign Cleaner](https://campaigncleaner.com) provides a wide range of settings that offer complete control over how your HTML is optimized, resulting in a boost in engagement and ROI. The settings are divided into three main sections for easy management:

1. Toggle Settings - These settings can be toggled on and off to control specific features of your campaign.

2. Advanced Settings - A lot of the magic happens here, as these settings consist of toggles and user input that control the dynamics of your campaign.

3. Always On Settings - These settings are based on analytics and won't change or update your Email Campaign's HTML, except for the mandatory CSS Inliner and HTML Sanitizer.

4. Save Settings - After configuring your desired settings, save them for quick reference. Create distinct presets for various use cases, streamlining your workflow and enhancing efficiency..

Each campaign can have different settings, and these settings are saved with your campaign. For new campaigns, the default settings are inherited from the previous campaign settings used.

# Toggle Settings

Here's a list of all the different toggle settings, please refer to the Feature & Settings section of the documentation to explore each of these settings.

<img alt="cc-settings-3.png" />

<img alt="cc-settings-4.png" />

# Advanced Settings

Here's a list of all the different advanced settings, please refer to the Feature & Settings section of the documentation to explore each of these settings.

<img alt="advance-settings-1.png" />

<img alt="advance-settings-2.png" />

# Always On Settings

Here's a list of all the different alwayus on settings, please refer to the Feature & Settings section of the documentation to explore each of these settings.

<img alt="always-on-1.png" />

<img alt="always-on-2.png" />

<img alt="always-on-3.png" />

# Save Settings

The save preset function is situated in the top-right corner of the settings page. Easily create and customize multiple presets for diverse use cases, optimizing your workflow and boosting overall efficiency.

<img alt="save-preset-2.png" />

<img alt="save-preset-1.png" />


# Alt and Title Attribute Management
Source: https://docs.campaigncleaner.com/features-settings/alt-and-title-attribute-management

Learn why Alt and Title attributes are necessary in email and how they can improve the accessibility and deliverability of your email content.

# Are ALT Descriptions and Link Titles Necessary?

When it comes to designing HTML emails, including the right elements can make a big difference in terms of accessibility, deliverability, and user experience. One key element that should not be overlooked is the use of alt and title attributes in images and links.

Alt attributes are used to provide alternative text descriptions for images in case they can't be displayed, either because of technical issues or user preferences (such as disabling images in email clients). By providing a concise and descriptive alt text, you can ensure that the content of the image is still conveyed to the recipient, even if they can't see the image itself.

Title attributes, on the other hand, are used to provide additional information or context for links. When a user hovers over a link with their cursor, the title attribute can display a tooltip with additional information, such as a brief summary of the linked content or a call to action. This can help improve the user experience by providing more context and guidance for the user.

Both alt and title attributes can also play a role in email deliverability. In some cases, email clients may use the presence and quality of alt text as a factor in determining whether an email is legitimate or spammy. By including meaningful and relevant alt text, you can help improve the legitimacy and trustworthiness of your email content in the eyes of spam filters.

Similarly, by using descriptive and relevant title attributes, you can help reduce the risk of your email being flagged as suspicious or low-quality. This can help improve your email's deliverability and ensure that it reaches your intended audience.

[Campaign Cleaner](https://campaigncleaner.com/) will point out any missing ALT and TITLE attributes on images and links, in the `Campaign Analysis` tab and also on the `Clean Campaign` tab.

Below you will see an example under the `Campaign Analysis` tab, indicating that there are links and images missing the TITLE or ALT Attributes.

<img alt="text-link-1.png" />

<img alt="text-image-1.png" />

Clicking the # next to `Images missing ALT Attribute`, brings up an easy to management tools to allow you to quickly update all your `ALT Descriptions` at once. There is a button to generate the "ALT Descriptions Automatically" using computer vision AI.

<img alt="alt-management-1.png" />

Below is an example of the "ALT Descriptions" generated at a click of a button.

<img alt="alt-management-1.png" />

Clicking the # next to `Links Missing TITLE Attribute`, brings up an easy to management tools to allow you to quickly update all your `TITLE Attributes` at once.

<img alt="title-management-1.png" />

The Green button, "Use Link Text" allows to populate the Link Titles, using the text from the link really fast. Not all links have text, some have images in between, those you will need to update manually.

<img alt="title-management-1.png" />

# Video Overview of ALT Attributes

<video />

# Video Overview of Title Attributes

<video />

# ALT and TITLE Attributes Use Case

<Note>
  A clothing retailer is creating an email campaign to promote their latest collection of summer dresses. The email includes several images of different dresses, and the retailer wants to ensure that the images are accessible to all subscribers, including those who may have visual impairments or are using screen readers to access the email.

  To achieve this, the retailer decides to include alt and title attributes in the image tags of the email. Alt attributes provide a text description of the image that can be read by screen readers, while title attributes provide additional information about the image when the user hovers over it with their mouse.

  By including alt and title attributes in their email images, the retailer can improve the accessibility and user experience of their email campaign, making it easier for all subscribers to engage with their content. Additionally, by ensuring that their email is accessible to a wider range of users, the retailer can also improve the overall deliverability and engagement of their email campaign.

  To ensure that their alt and title attributes are optimized and comply with best practices, the retailer uses [Campaign Cleaner](https://campaigncleaner.com/) to identify any missing or inaccurate attributes, and to automatically generate alt tags based on the image file name or other relevant information. This helps to streamline the email creation process and ensure that their emails are accessible and effective for all subscribers.
</Note>


# Background Image Detection
Source: https://docs.campaigncleaner.com/features-settings/background-image-detection

Improve your email deliverability by detecting background images that could affect rendering. Optimize your campaigns for better inbox placement.

# Do Email Clients Really Block Background Images?

Email marketing is an essential component of any digital marketing strategy. However, it's important to understand that not all email clients display images in the same way. In particular, many popular email clients like Windows Mailand Outlook may block background images or not display them correctly. This means that email designers must take extra care to ensure that their emails display correctly on all email clients to maximize engagement and deliverability.

One way to ensure that emails display correctly is to remove background images altogether. This can help improve deliverability and engagement rates as emails with broken or missing images are more likely to be marked as spam or deleted by recipients. Additionally, background images can sometimes make emails look cluttered or distract from the main message, so removing them can help create a cleaner and more streamlined design.

Designers can still incorporate visual elements into their emails by using other design elements like colors, fonts, and graphics. By focusing on these elements and designing emails with a mobile-first approach, designers can create emails that are engaging and effective regardless of the email client used by recipients. Ultimately, the key to successful email marketing is to create emails that are visually appealing, easy to read, and contain valuable content that resonates with recipients.

The good news is most of the major ISP email clients do support background images. If you only mail Consumer addresses that support background-images feel free to use them and ignore the warnings and alerts.

[Campaign Cleaner](https://campaigncleaner.com) is designed to detect all instances of background images used in your email campaigns and provide you with a comprehensive list. This way, you can easily identify and make necessary adjustments to your email templates, ensuring that they render correctly across all email clients and devices. By removing background images that are not supported by certain email clients, you can improve the overall deliverability and engagement of your email campaigns, and provide a seamless experience for all of your subscribers.

<img alt="background-images-1.png" />

If present, background images will be listed under the `Unsupported Images` section because not all email clients do not support them.

<Tip>
  Currently, we don't offer a one-click solution for hosting background images as we do for other images in your campaign. However, if you require hosting for your background images, you can upload them to the CDN within your account and replace the existing links with the new ones.
</Tip>

# Video Overview of Background images

<video />

# Background Image Removal Use Case

<Note>
  A real estate company regularly sends out email campaigns to its subscribers featuring properties for sale or rent. One of their recent campaigns had a background image of a beautiful beach scene, meant to evoke the idea of relaxing in a luxurious beachfront property.

  However, when they sent out the campaign, they noticed a significant drop in engagement and click-through rates, particularly among subscribers who used email clients that don't support background images.

  Realizing this issue, they used Campaign Cleaner to detect and remove all background images from their email campaigns. The next campaign they sent out saw a marked increase in engagement and click-through rates, indicating that their subscribers were more likely to engage with emails that displayed properly on their devices.

  Overall, by removing background images, the company was able to improve the deliverability and engagement of their email campaigns, resulting in more successful marketing efforts.
</Note>


# Blacklisted Link Checker
Source: https://docs.campaigncleaner.com/features-settings/blacklisted-links

Blacklist Link Recursion Checking helps to avoid having your email flagged as spam by checking if any of the links in your email have been blacklisted.

# Why Do We Do Blacklist Link Recurison Testing?

Blacklist Link Recursion Checking is an important technique for improving email deliverability. When sending out email campaigns, it's common to include links to external websites, but these links can often be a source of problems. If any of the links are blacklisted by spam filters, your email is likely to be marked as spam, which can harm your reputation and reduce the chances of future emails reaching the inbox.

One way to avoid this is to use Blacklist Link Recursion Checking. This technique checks all the 301 redirects of all the links found in your email campaign. By doing so, it can detect if any of the links lead to a blacklisted website, even if the original link itself is not blacklisted. This means you can identify potential issues before sending your emails, and make the necessary changes to ensure your emails have the best chance of reaching your subscribers' inboxes.

Not only does Blacklist Link Recursion Checking improve deliverability, it can also help you understand which links are the most problematic. If you consistently see links that lead to blacklisted websites, it may be worth reviewing your content and considering whether it's necessary to include those links in future campaigns.

Our process includes verifying the links within our content against domains that are flagged on blacklists. While many organizations limit their checks to RBL's such as the one available at [https://multirbl.valli.org/lookup/](https://multirbl.valli.org/lookup/), we extend our scrutiny to additional platforms such as PhishTank, Google Transparency Report, and others. This extra step ensures that if a user clicks on any link, they won’t be hindered by blockades that prevent access to the linked destination.

<img alt="blacklist-recursion-1.png" />

# Video Overview of Blacklisted Link Detection

<video />

# Use Case for Blacklist Link Recursion Testing

<Note>
  A marketing agency is tasked with creating an email campaign for a client. The agency knows that email deliverability is critical for the success of the campaign, so they decide to use Blacklist Link Recursion Checking as a part of their email validation process.

  The agency creates the email campaign and runs it through their validation tool which uses Blacklist Link Recursion Checking from [Campaing Cleaner](https://campaigncleaner.com/). The tool tests all the 301 redirects of all the links found in the email, ensuring that there are no spammy or malicious links that might cause the email to be flagged as spam or blocked by ISPs.

  After validating the email, the agency sends it out to the client's subscribers. Thanks to the Blacklist Link Recursion Checking process, the email is delivered to the subscribers' inboxes instead of getting caught in spam filters.

  The agency monitors the email campaign and sees that the open and click-through rates are higher than average, indicating that the email was well-received by the subscribers. The client is pleased with the results and the agency has earned their trust by ensuring the success of the email campaign through effective email deliverability techniques.
</Note>


# Classes and ID Removal
Source: https://docs.campaigncleaner.com/features-settings/classes-and-id-removal

Removing unnecessary classes and IDs in email delivery can reduce file size and load time, improving deliverability and open rates.

# What are the benefits of Classes and ID Removal ?

In HTML email design, classes and IDs are often used to apply styling and formatting to specific elements of an email, such as text or images.

Removing classes and IDs from email templates can improve email deliverability.

* Removing classes and IDs can help streamline the HTML code in email templates, making them more lightweight and less cluttered. This can improve loading times and reduce the overall size of the email, which can be particularly important for users who access their email on mobile devices with limited data plans or slow connections. By reducing the file size and improving loading times, emails are more likely to be opened and read by recipients, which can lead to better engagement and ultimately, better results for email marketers.

* There is actually no need for them, once you [inline your CSS.](/features-settings/css-inliner)

## Example of With and Without Classes

### With Classes

<img alt="classes-1.png" />

### Without Classes

<img alt="classes-2.png" />

This is a basic example, normally, there will be an external CSS those classes are attached to and you will [Inline the CSS](/features-settings/classes-and-id-removal) before removing the classes.  You will also convert [`h` tags to `p` tags](/features-settings/h-to-p-tag-conversion)  to ensure a consistant display across email clients.

# Video Overview of Classes an ID Removal

<video />

# Classes and ID Removal Use Case

<Note>
  An online marketing firm observed that their email campaigns were not resonating well with their audience, leading to disappointing engagement levels.  After conducting some research, they discovered that one of the reasons for their poor deliverability was the excessive use of classes and IDs in their email templates.

  The problem with using so many classes and IDs in emails is that it increased the size of the email that it caused clipping. Portions of the email is not shown to the users because of clipping. To address this issue, Company XYZ decided to use a tool like [Campaign Cleaner](https://campaigncleaner.com/) to remove all unnecessary classes and IDs from their email templates.

  By removing these unnecessary classes and IDs, and reducing the size of their email, the company was able to improve their email engagement rates, with more subscribers interacting with their emails.
</Note>


# Control and Non-Printable Characters
Source: https://docs.campaigncleaner.com/features-settings/control-and-non-printable-characters

Control and non-printable character removal is the process of removing non-printable characters from a text document.

# Is Control and Non-Printable Character Removal Necessary?

Control and non-printable character removal can play a crucial role in helping improve email delivery. Non-printable characters can often appear as random, unwanted characters within an email's HTML or plain text, which can negatively impact the email's formatting and readability. Additionally, some email servers and spam filters may flag emails containing non-printable characters as suspicious or spammy, resulting in the email being blocked or sent to the recipient's spam folder.

By removing non-printable characters, email senders can improve the formatting and readability of their emails, making them more appealing and engaging to the recipient. Additionally, by ensuring that their emails do not contain any suspicious or spammy elements, senders can increase the likelihood that their emails will reach the recipient's inbox rather than being flagged as spam. Therefore, mastering the process of control and non-printable character removal can help email senders maximize the impact of their messages and improve their email deliverability.

## What are Non-printable Characters?

Non-printable characters, on the other hand, are characters that do not have a visible representation in printed text. Examples of non-printable characters include the null character (ASCII code 0), the backspace character (ASCII code 8), and the escape character (ASCII code 27). Other non-printable characters include various control codes and character formatting codes used in electronic documents, such as Unicode characters that represent formatting elements like line breaks.

# Video Overview of Control and Non-Printable Character

<video />

# Control and Non-Printable Character Removal Use Case

<Note>
  ABC Marketing is a company that regularly sends out email newsletters to their subscribers. However, they have noticed that some of their subscribers are experiencing issues with the formatting and display of their emails. After investigating the issue, they discover that there are control and non-printable characters in their email templates that are causing the issues.

  To address this issue, ABC Marketing decides to use a software tool such as [Campaign Cleaner](https://campaigncleaner.com) to automatically remove any control or non-printable characters in their email templates before sending them out. This ensures that their emails are properly formatted and free of any potential display or delivery issues.

  By using a tool like [Campaign Cleaner](https://campaigncleaner.com) to remove control and non-printable characters, ABC Marketing is able to improve the overall readability and professionalism of their emails, which can lead to higher engagement and conversion rates. They are also able to reduce the risk of emails not displaying correctly for some subscribers, which can improve their email deliverability rates and ensure that their emails are reaching their subscribers' inboxes instead of being marked as spam.
</Note>


# Convert CSS Attributes To Style
Source: https://docs.campaigncleaner.com/features-settings/convert-attributes-to-styles

Relative references are not suitable for emails because the absolute path will be of the URL where the email is opened, not where image is stored.

## What are CSS Attributes?

Some HTML elements allow you to define CSS related attributes instead of using the style attribute. For example

`<div width="100">`

To ensure compatabilty accross all emails clients Campaign Cleaner will convert the attribute with into a style width also.

`<div style="width:100px" width="100">`

Some attributes after the conversion will be removed, like `bgcolor`, some we will leave both in place, because it can affect the rendering layout of your newsletter.

## Why is this important?

1. **Consistent Rendering:** Different email clients may interpret HTML attributes inconsistently. Using inline styles ensures a more consistent rendering of your email across various platforms.

2. **Compatibility:** Some email clients might not support certain HTML attributes for styling, and using inline styles is a more universally accepted method for styling HTML elements in emails.

3. **Responsive Design:** Inline styles provide better control over responsive design. By specifying styles directly in the HTML elements, you can tailor the appearance of your email content to different screen sizes and devices.

4. **Avoiding Quirks:** Some email clients have quirks and limitations when it comes to interpreting HTML attributes. Inline styles are a safer choice to avoid potential issues with how your email is displayed.

5. **Cross-Client Compatibility:** Different email clients have varying levels of support for HTML and CSS. Using inline styles increases the likelihood that your styling will be correctly applied regardless of the email client.


# Converting Relative URLS
Source: https://docs.campaigncleaner.com/features-settings/convert-relative-urls

Relative references are not suitable for emails because the absolute path will be of the URL where the email is opened, not where the image is stored.

## How does it happen?

This situation typically occurs when attempting to transform website HTML into email HTML. Many websites favor using relative paths, as they are either directly serving images or linking to content located in a different section of the website. This approach, while effective for websites, encounters issues when applied to email HTML due to the differing nature of resource linking in emails.

## How to Convert Relative Links?

At campaign cleaner we provide a tool that will detect relative links in the `HTML` and allow you to quickly convert them `absolute URLS`.

This feature is found under `Clean Campaign` --> `Tools` --> `Convert Relative Links`

<img alt="Convert Relative URLS" />

Just type in your `BASE URL` and click `Update My Links`


# CSS Inliner
Source: https://docs.campaigncleaner.com/features-settings/css-inliner

CSS Inlining is a technique used in email marketing to boost delivery rates by embedding CSS styles directly into the HTML code.

# How is CSS Inlining Helpful?

Inlining CSS is helpful for email delivery because many email clients don't support the `<style>` tag or external CSS files. Instead, they require all CSS to be included inline within the HTML document. By inlining CSS, email designers can ensure that their emails render consistently across all email clients, even those that don't support external CSS.

Inlining CSS can also help improve email deliverability. Many spam filters use algorithms to analyze the content of emails, and they may flag emails that have suspicious-looking external CSS files or stylesheets. By inlining CSS, designers can avoid triggering these filters and increase the chances that their emails will be delivered to recipients' inboxes.

There are a few different ways to inline CSS, including manually copying and pasting the styles into the HTML code or using a CSS Inliner tool like [Campaign Cleaner](https://campaigncleaner.com). A CSS Inliner tool is a program that automatically converts linked CSS stylesheets or `<style>` tags into inline styles that can be applied directly to HTML elements. If you’re new to linked CSS, here’s a quick refresher on [how to link CSS to HTML](https://byalexdavid.com/how-to-link-css-to-html-explained-with-example) before you inline it.

Media Queries are used to adjust the CSS for certain devices and resolution, most of the major email clients support them to some degree. There is no harm in using Media Queries, if it's supported that device will use them, if it's not supported it will just be ignored. We have a setting to 'Preserve Media Queries', this option should be turned on, even if you don't use them.

Also, there is two additional advanced options which are defaulted on,

1. Remove !important when Inlining CSS - This option removes the !important flag on any CSS that is being inlined. If you're using media queries, this is important to remove, so the media queries can overwrite the Inline CSS Styles.
2. Add !important to Media Queries - The only way Media Queries can over-write existing inline CSS is if the values in the Media Queries are maked with `!important`.

<Note>
  Linked stylesheets as styles in a seperate file and is widely unsupported in most email clients, if you choose not to inline your CSS the linked stylesheets will be removed from your HTML, since it's widely unsupported.
</Note>

In the first image below, is an example of `<style>` tags used in HTML. The second image will show it being inlined into the HTML which is the proper way to send HTML emails.

<img alt="css-inliner-1-before.png" />

Below you can see the `<style>` tags were removed, we also removed the `class` attribute, which is another feature of [Campaign Cleaner](https://campaigncleaner.com), since it's no longer needed. Additionally, the `<h1>` tag should be to a `<p>` tag, because it will inherit the CSS of the email/browser client. Which is another feature [H to P Tag Conversion](/features-settings/h-to-p-tag-conversion) that can be turned on.

<img alt="css-inliner-1-after-2.png" />

<Note>
  Campaign Cleaner offers the ability to retain media queries, enabling you to tailor campaigns for specific email clients. Additionally, it seamlessly manages :root CSS variables for you.
</Note>

# Video Overview of CSS Inlining

<video />

# CSS Inlining Use Case

<Note>
  ABC Marketing, an email marketing agency, has been struggling with low email deliverability rates for their clients. They have noticed that many of their emails are being flagged as spam and not making it to their clients' inboxes. After researching possible solutions, they discover [Campaign Cleaner](https://campaigncleaner.com) and its CSS inlining feature.

  ABC Marketing decides to give [Campaign Cleaner](https://campaigncleaner.com) a try and begins using the CSS inlining tool for their email campaigns. They find that by inlining their CSS, their emails are more likely to display correctly across all email clients and devices. This leads to a significant improvement in deliverability rates, with more of their emails successfully reaching their clients' inboxes.

  Not only does CSS inlining improve email deliverability, but it also saves ABC Marketing time and resources. Instead of manually inlining CSS for each email campaign, they can use Campaign Cleaner to automate the process and streamline their workflow.

  Overall, ABC Marketing is thrilled with the results they have seen since using [Campaign Cleaner's](https://campaigncleaner.com) CSS inlining tool. Their clients' email campaigns are performing better than ever before, with higher engagement rates and increased revenue.
</Note>


# Diacritics Character Replacement
Source: https://docs.campaigncleaner.com/features-settings/diacritics-character-replacement

Replace accented characters with their plain ASCII equivalent to ensure compatibility across email clients and avoid spam filters.

# The Importantence of Diacritics Characters Replacement

<img alt="replace-diacritics-1.png" />

Diacritics characters are letters with accent marks, such as `á, é, ñ, and ü.` While they are commonly used in many languages, including Spanish, French, and German, they can pose a challenge for email delivery. Some email clients and spam filters may not recognize or display diacritics characters properly, leading to rendering issues or even email rejection.

To ensure compatibility across email clients and avoid spam filters, many email marketers choose to replace diacritics characters with their plain ASCII equivalent. For example, `á becomes a`, `é becomes e`, and so on. This process is known as diacritics characters replacement.

By performing diacritics characters replacement in email content, marketers can improve the deliverability and readability of their emails. This technique ensures that the text displays correctly on a wide range of email clients and devices, including those that do not support or recognize diacritics characters.

In addition to improving email deliverability and compatibility, diacritics characters replacement can also improve the overall user experience for subscribers. By ensuring that the text is readable and accessible, email marketers can better engage their subscribers and increase the effectiveness of their email marketing campaigns.

# Video Overview of Diacritics Characters Replacement

<video />

# Diacritics Characters Replacement Use Case

<Note>
  A travel company wants to send out an email promoting a vacation package to a english-speaking audience. The email content includes several diacritics characters because the destination is located in spain and the description contained chracters such as ñ and á, which are commonly used in the Spanish language. However, the company is concerned that these characters may not display properly on certain email clients or devices, leading to a poor user experience and potentially impacting the effectiveness of the campaign.

  To address this issue and ensure that the email is compatible with a wider range of email clients and devices, the travel company decides to use a [campaign cleaner](https://campaigncleaner.com)  that automatically removes any non-ASCII characters, such as diacritics. This technique ensures that the email content is universally compatible and reduces the risk of rendering issues or email rejection.

  By using a [campaign cleaner](https://campaigncleaner.com)  to remove non-ASCII characters from their email content, the travel company can improve the deliverability and readability of their email campaign, while ensuring that their message reaches the widest possible audience.
</Note>


# Email Client Inbox Previews
Source: https://docs.campaigncleaner.com/features-settings/email-inbox-previews

Preview your email campaigns across all popular devices and clients. Ensure flawless display and optimize your design for better inbox presentation.

The "Inbox Previews" page on [Campaign Cleaner](https://campaigncleaner.com) offers a feature that allows users to visualize how their email campaigns will appear across various email clients and devices. This tool provides a comprehensive rendering of emails, offering real-time previews without the need to send them. It covers over 99% of the market, so you can feel confident your email look consistent and professional in different viewing environments. Additionally, users can download these previews and share them amongst your team.

By clicking on the image, you will see full length email and the download option.

<img alt="email-client-preview-1.png" />

<img alt="email-client-preview-2.png" />

<img alt="email-client-preview-3.png" />

# Video Overview of Email Previews.

<video />

# Email Inbox Previews Use Case

<Note>
  A travel agency specializing in European destinations faced challenges with their email marketing campaigns due to diverse client requirements and varying email client compatibilities. To address this, they turned to Campaign Cleaner's Inbox Previews feature, which allowed them to preview and adjust their emails across a wide range of email clients and devices before sending.

  Using Campaign Cleaner, the agency was able to detect and rectify issues that could potentially hinder email deliverability and reader engagement. This proactive approach not only improved the aesthetic consistency of their emails but also boosted open rates and customer interactions, significantly enhancing the overall success of their marketing campaigns.
</Note>


# Font Color Adjustments
Source: https://docs.campaigncleaner.com/features-settings/font-color-adjustments

Improve your email inboxing rates by adjusting font colors. Learn how color choices impact deliverability and avoid spam filters.

# Does Adjusting Font Color Increase Inboxing?

In general, using certain font colors in an email can trigger spam filters if they are associated with spammy or low-quality content. This is because spammers often use flashy, bold or highly contrasting font colors to grab the attention of the recipient, but this tactic can also signal to spam filters that the email is spam.

Most spam filters use sophisticated algoritms that look a a combination of factors, font colors by themselves normally won't trigger one, but when combined other metrics it can tip it. If you scour the web, you'll find stories and how colors choice impacted thier delivery. Theirs many different spam filters each with their own rules and custom rules created by email administrators.

<Info>
  **Direct Quote from Unlayer**

  Avoid colors that trigger spam.

  An email with a red or green font has a high chance of landing in the spam folder. Similarly, white text written over an image or light-colored background can also land your email in spam.

  So try avoiding these practices to ensure that your email lands directly in your recipient's inbox and your hard work doesn’t go to waste.
</Info>

If you use bright font colors in your emails and want to try to improve your inboxing rates, you may want to consider enabling this option under your settings. [Campaign Cleaner](https://campaigncleaner.com/) will then adjust bright font colors, whether they are in HEX, RBG or defined with color names such as Red or Green, by slightly toning them down to create a more subdued, yet very similar color. This may help prevent triggering some spam filters that may flag bright colors as spammy, while still maintaining the visual appeal of the original color.

<img alt="adjust-font-color-1.png" />

# Video Overview of Adjusting Font Colors Automatically

<video />

# Font Color Adjustment Use Case

<Note>
  As an email marketer for ABC Marketing, you want to ensure that your emails are visually appealing and attention-grabbing, but you have noticed that some of your emails are being flagged as spam due to the use of bright and flashy font colors.

  To address this issue, you decide to use [Campaign Cleaner](https://campaigncleaner.com/) to analyze your email templates and identify any font colors that may trigger spam filters. You adjust the font colors to a more toned-down version that is less likely to trigger spam filters, but still visually appealing and appropriate for your brand and message.

  By adjusting the font colors in your emails, you can improve your email deliverability rates and ensure that your emails are reaching your subscribers' inboxes instead of being marked as spam. Additionally, by using more appropriate font colors, you can improve the overall readability and professionalism of your emails, which can lead to higher engagement and conversion rates.

  Overall, adjusting bright spammy font colors to a more toned-down version in email delivery can help improve email deliverability rates and ensure that your emails are visually appealing and appropriate for your brand and message. By using a tool like [Campaign Cleaner](https://campaigncleaner.com/) to analyze and adjust your email templates, you can improve your email marketing strategy and reach more subscribers with your message.
</Note>


# Font Size Enforcement
Source: https://docs.campaigncleaner.com/features-settings/font-size-enforcement

Enforcing min and max font sizes in emails can boost deliverability and accessibility. Ensure readability and optimal display across all devices.

# Enforcing Min and Max Font Sizes

Enforcing a minimum and maximum font size in email can help improve email delivery, accessibility, and even reduce the likelihood of triggering spam filters. By setting font size limits, you can ensure that your emails are optimized for readability and compatibility across a wide range of devices and email clients, while also avoiding potential red flags that may trigger spam filters.

**Here's the source code from the SpamAssassin, the #1 Open Source anti-spam platform.**

<img alt="sa-font-size.png" />

Setting a minimum font size can help ensure that your emails are accessible to all subscribers, including those with visual impairments or using smaller screens. This can improve engagement and conversion rates, while also avoiding potential accessibility compliance issues.

On the other hand, enforcing a maximum font size can prevent emails from appearing cluttered and overwhelming, making them easier to read and navigate for subscribers. This can also help avoid potential spam filter triggers, as excessively large fonts may be flagged as spammy or manipulative.

By enforcing a min and max font size in your email templates, you can also ensure that your emails appear consistent and professional across different email clients and devices. This can help avoid potential delivery issues, as well as improve the overall user experience for subscribers.

<img alt="enforce-font-size-1.png" />

# Video Overview of Automatic Font Size Adjustments

<video />

# Use Case for enforcing Min/Max Font Sizes

<Note>
  A clothing retailer regularly sends a newsletter to their subscribers with the latest fashion trends and promotions. They want to ensure that their emails are optimized for readability and accessibility, while also avoiding potential spam filter triggers.

  To achieve this, the retailer decides to use the [Campaign Cleaner](https://campaigncleaner.com) tool to enforce a minimum font size of 14px and a maximum font size of 22px in their email templates. This ensures that the text is legible and easy to read on smaller screens and devices, while also avoiding excessively large fonts that may appear spammy or manipulative.

  By using the [Campaign Cleaner](https://campaigncleaner.com) tool to enforce font size limits, the retailer can improve the overall user experience for subscribers, which can lead to higher engagement and conversion rates. Additionally, by avoiding potential spam filter triggers, the retailer can ensure that their emails are delivered to subscribers' inboxes and not flagged as spam or junk mail.
</Note>


# H to P Tag Conversion
Source: https://docs.campaigncleaner.com/features-settings/h-to-p-tag-conversion

Converting H tags to P tags in email is crucial because many email clients, including Gmail and Yahoo, strip out the styles associated with H tags.

# Why is H to P Tag Conversion Important?

<img alt="h-p-tag-1.png" />

Converting `h` tags to `p` tags with inline styles is an important practice in email design for several reasons. First, `h` tags have a higher default font size and weight than `p` tags, which can result in inconsistent formatting across different email clients. By converting `h` tags to `p` tags with inline styles, designers can ensure that the font size and weight are consistent across all email clients, improving the overall readability and user experience.

Secondly, many email clients have default styles for `h` tags that can override custom styles, resulting in inconsistent formatting. By using `p` tags with inline styles, designers can have greater control over the formatting of the text and avoid any potential conflicts with default styles in email clients. This can also help to ensure that the email looks the way it was intended, regardless of the email client being used to view it.

Overall, converting `h` tags to `p` tags with inline styles is an important practice for creating consistent and readable emails that can be viewed across multiple email clients. By using `p` tags with inline styles, designers can have greater control over the formatting of the text, avoid conflicts with default styles in email clients, and ensure a consistent user experience

[Campaing Cleaner](https://campaigncleaner.com/), has a setting to do this automaticially and sets the correct font-size based on the `h` Tag numbering.

## Example of H to P Tag Conversion

### Before

<img alt="h-p-tag-2.png" />

### After

<img alt="h-to-p-3.png" />

The correct font size is add to the style tag based on the `h` tag number.

# Use Case for H to P Tag Conversion

<Note>
  Let's say you are creating an HTML email for a company newsletter using an email marketing tool. The newsletter includes several articles with headings and body text. You've used H1 to H3 tags for the article titles and P tags for the body text, but you noticed that some of the titles are displaying differently accross different email clients.

  To optimize the email content, you decide to use the [Campaing Cleaner](https://campaigncleaner.com/) feature that can automatically convert H tags to P tags. This helps improve the overall readability and engagement of your email content, which lead to higher click-through and conversion rates.

  Additionally, by removing H tags throughout your email content, you help ensure that your email renders consistently across different email clients and devices.
</Note>


# Height Attribute Removal
Source: https://docs.campaigncleaner.com/features-settings/height-attribute-removal

 Find out why height attributes can cause rendering issues and how removing them can help ensure consistent rendering across devices.

# The Impact Of Removing The Height Attributes

In HTML emails, the height attribute is commonly used to specify the height of an image. However, setting a fixed height for elements in your email can cause issues with responsive design and make your email less adaptable to different screen sizes and devices. Additionally, if an image is too large for its specified height, it can cause the image to become distorted or appear pixelated, leading to a poor user experience.

To avoid these issues and improve the performance of your email, it's recommended to remove the height attribute from images in your email HTML. Instead, let the content dictate the height of the element, allowing it to scale dynamically based on the device and screen size. This can help ensure that your email is optimized for a variety of devices, from desktops to mobile phones, and can help improve the overall readability and engagement of your email content.

By removing the height attribute from your email HTML, you can also help reduce the overall size of your email, making it faster to load and reducing the risk of it being flagged as spam or low-quality content. This can improve the deliverability and accessibility of your email, ensuring that it reaches as many subscribers as possible and delivers the intended message effectively.

## Activating Height Attribute Removal

**Under Advanced Settings, just toggle this setting on.**

<img alt="remove-height-1.png" />

## Example of Height Attribute Removal

### Before

<img alt="remove-height-2.png" />

### After

<img alt="remove-height-3.png" />

# Use Case For Removing the Height Attributes

<Note>
  ABC Corporation is a technology company that offers various products and services to its customers. The company has been sending out weekly newsletters to its subscribers, which contain product updates, company news, and industry insights.

  Recently, the company noticed that its email open rates and click-through rates have been decreasing. Upon investigating the issue, they found that the newsletter emails contained images with fixed height attributes, which caused them to display poorly on mobile devices and smaller screens.

  To address this issue, the company decided to remove the height attributes from all images in their newsletters. They used  [campaign cleaner](https://campaigncleaner.com) to identify and remove the height attributes from the HTML code of their email templates.

  As a result, the company's newsletters now display correctly on all devices and screen sizes, improving the user experience for their subscribers. This has led to an increase in open rates and click-through rates, and a positive impact on the overall engagement with their email campaigns.
</Note>


# HTML Comment Removal
Source: https://docs.campaigncleaner.com/features-settings/html-comment-removal

Removing HTML comments from emails can improve email deliverability, reduce email file size, and enhance email security.

# Does HTML Comment Removal Help?

Removing HTML comments from emails can significantly improve email deliverability. HTML comments are often used by developers to leave notes and annotations in the code, but they can bloat the email's file size and negatively affect email rendering in different email clients. In some cases, email spam filters may find something they don't like in HTML comments and consider it spammy, which can result in the email being blocked or sent to the recipient's spam folder.

## SpamAssassin Source For Obfuscating Comments

**Here's the source code from the SpamAssassin, the #1 Open Source anti-spam platform.**

<img alt="sa-html-comment.png" />

What it means by obfuscating\_comment, the comment appears in between letters or numbers.

<img alt="sa-html-comment.png" />

You can see how the person is trying to hide the word `free`, to avoid spam triggers using comments. This is just one example, how a comment can trigger a spam filter.

By removing HTML comments from emails, email senders can reduce the email's file size, which can help the email load faster and render more consistently across different email clients. This can lead to a better user experience and higher engagement rates for the email campaign. Additionally, by reducing the chances of emails being flagged as spam, email senders can improve their email deliverability and increase the likelihood that their messages will reach their intended recipients.

Removing HTML comments from emails is a simple but effective way to improve email deliverability, enhance the user experience, and boost the effectiveness of email campaigns. By removing HTML  Comments, email marketers can optimize their email campaigns and achieve better results.Your content here.

Always flip this setting on in [Campaign Cleaner](https://campaigncleaner.com).

## Example of HTML Comment Removal

### Before

<img alt="html-comment-1.png" />

### After

<img alt="html-comment-2.png" />

The three green lines in the first image are HTML Comments, they were removed.

# Video Overview of HTML Comment Removal

<video />

<Info>
  MSO Comments are not removed - MSO comments in emails are special conditional comments used to target Microsoft Outlook-specific versions, particularly older versions of Outlook that use the Word rendering engine for displaying HTML emails.
</Info>

# HTML Comment Removal Use Case

<Note>
  An email marketer wants to send a promotional email campaign to his subscribers. He create an HTML email template with some comments in the code to remind yourself of certain elements or to leave notes for other developers.

  When he send the email campaign, some subscribers report that they are not receiving your emails, while others report that the emails are taking a long time to load or appearing broken in their email clients.

  Upon investigating the issue, he realize that the excessive HTML comments in the email's code are causing the email file size to be much larger than necessary, which is causing the email to load slowly and inconsistently across different email clients. Additionally, some email spam filters may be flagging the emails as spammy due to some of the wording in the HTML comments.

  By using [Campaign Cleaner](https://campaigncleaner.com) to remove the HTML comments from the email template, he can reduce the email file size, improve email rendering and load times, and increase the chances of his emails being delivered to your subscribers' inboxes. As a result, his email campaign is more effective, and see higher engagement rates and better results.
</Note>


# HTML Entities
Source: https://docs.campaigncleaner.com/features-settings/html-entities

Using HTML entities in emails helps avoid display issues, rendering problems, and security risks, ensuring your content appears as intended across clients.

## Automatic Conversions

Campaign Cleaner will automatically convert non-ascii symbols into their HTML Entities.  For example.

1. * Registered Trademark Symbol (®)
   * HTML Entity: `&reg`;

2. * Copyright Symbol (©)
   * HTML Entity: `&copy`;

3. * Degree Symbol (°)
   * HTML Entity: `&deg`;

I added the Symbols below into campaign cleaner.

<img alt="html-entity-1" />

Pressing `Clean Campaign` will trigger the conversion. The conversion can also take place when other functionality is used as well.

<img alt="html-entity-2" />


# HTML Fragments
Source: https://docs.campaigncleaner.com/features-settings/html-fragment

HTML fragments in email refer to sections of HTML code that can be reused across multiple email campaigns.

# How are HTML Fragments Useful?

These fragments offer a way for marketers to send only the necessary code for a specific part of an email, such as the header section which may include a logo, navigation, and introductory text. Fragements can be an entire email or a small snippet of code, that you will embed as HTML in a larger email template builder such as beefree.

Furthermore, HTML fragments can be reused across different emails, saving time for marketers and creating consistency across their campaigns. These fragments are considered as sections of an email campaign and will not contain `<html>` or `<body>` tags as they are partial sections. Templates are widely used in email marketing, with each section of the template being considered as a fragment.

When creating new emails, any new content that is inserted into a template is also referred to as a fragment.

## Examples of HTML Fragments

### HMTL Fragment

<img alt="html-fragment-1.png" />

### HTML Template

<img alt="html-fragment-2.png" />

At line 16, there's a prompt suggesting the insertion of the tailored content segment at that point in the HTML. This serves merely as a guide; the actual process for incorporating HTML fragment can vary based on the email template system you are using.

Exporting your HTML from the template tool, refining it with a campaign cleaner, and then dispatching it as raw HTML is the preferred procedure. While template builders are excellent for crafting emails swiftly, the HTML generated is not always streamlined. They maintain a specific structure to ensure compatibility with the template system's functionality.

Campaign Cleaner was initially developed to optimize large fragments, but it does an excellent job optimizing the entire email.

# HTML Fragment Use Case

<Note>
  A company utilizes HTML fragments in its email campaigns to streamline the creation process and ensure consistency across different messages. They encounter challenges with email performance, such as rendering issues, slow load times, and potential spam filtering due to non-optimized content.

  To address these issues, the company turns to Campaign Cleaner, which offers a comprehensive optimization toolset. Campaign Cleaner enhances the email campaigns by:

  **Optimizing images:** It resizes, converts, and hosts images on a CDN for faster loading.

  **Previewing inboxes:** It previews how emails will appear across different clients and devices.

  **Managing preheaders and fonts:** It adjusts preheader text and font colors to prevent triggering spam filters.

  **Checking links:** It validates hyperlinks to prevent broken links and spam flagging.

  **Sanitizing HTML:** It ensures emails display consistently by removing unsupported HTML and JavaScript.

  **Compressing HTML:** It reduces email size for faster loading.

  With Campaign Cleaner, the company's HTML fragments are refined, leading to emails that are more likely to be delivered, opened, and acted upon by recipients. This results in improved engagement, better deliverability, and a higher return on investment for their email marketing campaigns.
</Note>


# HTML Minifier
Source: https://docs.campaigncleaner.com/features-settings/html-minifier

HTML Minifier is a tool that removes unnecessary characters and optimizes HTML code, reducing its size and improving its loading time. 

# What is a HTML Minifier?

HTML minifying can significantly improve email delivery by reducing the size of the HTML code. Emails are often limited in size and may be subject to spam filters if they exceed certain limits. By minifying HTML, extraneous spaces, line breaks, and comments can be removed, resulting in a smaller file size. This can help ensure that emails are delivered more quickly and efficiently, and that they are less likely to be flagged as spam.

In addition to improving email delivery, HTML minifying can also improve the user experience for those who receive the emails. Smaller email file sizes can result in faster loading times, particularly for those who have slower internet connections or who are accessing their email on mobile devices. This can help ensure that recipients are able to view and interact with the email content more quickly and easily, which can ultimately lead to higher engagement rates and a more positive overall experience.

## Example of Minification

### Before Minification

<img alt="html-minifier-1.png" />

### After Minification

<img alt="html-minifier-2.png" />

Although the example above is small, it demonstrates the potential of HTML minification. In this case, 40 characters were removed, but in a typical email, the reduction could be in the thousands.

To use this functionality, it's located under `Tools --> Minify HTML`

# Video Overview of HTML Minification

<video />

# HTML Minifier Use Case

<Note>
  Let's say you're an email marketer who wants to send a promotional email campaign to your subscribers. You have designed a beautiful HTML email template with a lot of content, including images and videos.

  However, you realize that the size of your email is quite large, which can result in slow email load times, and in some cases, email clients may not display the entire email if it exceeds their maximum file size limit.

  To reduce the size of your email, you decide to use an HTML minifying tool to strip out any unnecessary white space and comments from your email's HTML code, compressing the code and reducing its file size.

  With HTML minifying, your email file size is reduced, which means faster email load times for your subscribers. This can result in better engagement rates and fewer subscribers abandoning your email before it fully loads.

  Additionally, a smaller email size can help reduce the chances of your email being flagged as spam or blocked by email filters, as some email filters consider larger emails suspicious.

  As a result, you see improved email deliverability, higher engagement rates, and a more successful email campaign.
</Note>


# HTML Sanitizer
Source: https://docs.campaigncleaner.com/features-settings/html-sanitizer

HTML sanitizing is the process of cleaning up and validating HTML code to remove any potentially malicious or harmful elements.

# Why is HTML Sanitizing Important?

When it comes to email delivery, HTML sanitizing can be extremely helpful in avoiding the spam box.

Many email clients and spam filters have strict guidelines regarding what types of HTML code are allowed in emails, and any suspicious code can cause the email to be flagged as spam or blocked entirely. By using an HTML sanitizer to remove any code that could be seen as suspicious or malicious, email senders can greatly increase the chances of their emails making it to the recipient's inbox.

In addition to protecting against spam filters, HTML sanitizing can also improve the overall user experience by ensuring that emails are displayed correctly across all email clients and devices. This can help to build trust with recipients and improve engagement rates, leading to more successful email marketing campaigns.

## Examples of HTML Sanitizing

### Before sanitizing

<img alt="html-sanitizier-4.png" />

### After sanitizing

<img alt="html-sanitizier-3.png" />

In this example, the `meta` tag was removed because it's not necessary for email rendering, and the `script` tag was removed because it's potentially harmful and may trigger spam filters in some email clients. The other differences you see was that the `<h1>` tag was converted to a `<p>` tag, because the H to P Tag Conversion option was turned on in this example as well.

# Video Overview of HTML Sanitization

<video />

# HTML Sanaitizing Use Case

<Note>
  ABC Corporation is a large multinational corporation that relies heavily on email marketing to reach its customer base. They have noticed that their email deliverability rates have been steadily declining, and they suspect that their HTML code might be to blame.

  To address this issue, they decide to use [Campaign Cleaner's](https://campaigncleaner.com/) HTML sanitizing feature. This feature analyzes their HTML code and removes any potentially harmful elements or attributes, such as scripts or iframes, that could trigger spam filters or cause rendering issues in some email clients.

  After using [Campaign Cleaner](https://campaigncleaner.com/) to sanitize their email templates, ABC Corporation sees a noticeable improvement in their email deliverability rates. Their emails are no longer being flagged as spam, and they are seeing higher open and click-through rates. They continue to use [Campaign Cleaner](https://campaigncleaner.com/) regularly to ensure that their HTML code is always clean and optimized for maximum deliverability and engagement.
</Note>


# Oversized Images
Source: https://docs.campaigncleaner.com/features-settings/image-summary

Improve email deliverability with Oversized Image Detection. Detect and resize large images to prevent slow loading, broken layouts, and spam filtering.

# Why Resizing Oversized Images Is Important.

Email clients have certain limitations on the size of images they can display. Oversized images can cause problems like slow load times, image distortion, and broken formatting. This can negatively impact the user experience and reduce the effectiveness of email campaigns.

To address this issue, email marketing tools often include an Oversized Image Detection feature. This feature analyzes images within an email and identifies any that exceed the recommended size or dimensions. Once identified, the tool can either automatically resize the image or notify the user to resize it manually.

By detecting and addressing oversized images, email marketers can ensure that their emails are optimized for display on different email clients and devices. This can improve the overall user experience and increase the likelihood of achieving desired engagement metrics like opens, clicks, and conversions.

*This feature is enabled by default for all paid accounts and grants you the ability to automatically resize and host the new image with us.*

**Below is an example of an email that was detected to have 6 images that exceeded the normal width and height for a typical email.**

<img alt="oversized-images-1.png" />

Clicking the the number 1 link to `Oversized Images`, will popup a display containing all the over sized images and their dimensions.  You can also click on the `Resize and Host` tool, to automatically resize the image, change the hosting location, and update the Campaign HTML.

<img alt="oversize-image-list-1.png" />

# Video Overview of Classes an ID Removal

<video />

# Use Case For Resizing Oversized Images.

<Note>
  A company sends out a newsletter to their subscribers every month. They include images in their newsletters to make them visually appealing and engaging. However, they recently noticed that some of their subscribers were experiencing slow loading times or not receiving the newsletter at all.

  By implementing Oversized Image Detection, the company can now identify and resize any images in their newsletter that are too large. This not only improves the loading speed and overall user experience for their subscribers but also increases the likelihood of the newsletter being delivered to their inbox instead of being marked as spam.

  Additionally, with the help of Oversized Image Detection, the company can ensure that their newsletters are optimized for all email clients and devices, including mobile devices with limited data plans or slower internet connections. This can improve their overall email marketing performance, as more subscribers will be able to access and engage with their content.
</Note>


# Inherited CSS Removal
Source: https://docs.campaigncleaner.com/features-settings/inherited-css-removal

Improve email deliverability and rendering consistency by removing inherited CSS from your HTML emails.

# Why is Inherited CSS Removal Important?

<img alt="inherited-css-removal-1.png" />

When a child element has the same CSS property as its parent, it inherits the property value from the parent by default. This means that the CSS property doesn't need to be explicitly defined on the child element, and removing it from the child element can help reduce the overall size of the email.

Inherited CSS can be particularly problematic when dealing with large and complex HTML emails, as it can result in redundant CSS code that unnecessarily increases the email size and load time. This can have a negative impact on email deliverability, as larger emails are more likely to be flagged as spam or rejected by email servers.

By removing inherited CSS from your HTML emails, you can reduce the size of your email code and improve its performance and deliverability. This can also make it easier to maintain and update your email templates, as you can avoid duplicating CSS code across multiple elements.

# Video Overview of Inherited CSS Removal

<video />

# Use case for the removal of inherited CSS

<Note>
  You are an email marketer and you want to send out a marketing campaign to your subscribers using an HTML email template. The template consists of a header, footer, and several sections with different types of content. You've defined a set of CSS styles for the header and footer and have also defined some basic styles for the section elements.

  While designing the individual sections, you notice that some of them are inheriting the same CSS styles from the parent section element. This can cause the email code to be unnecessarily large, which may affect its performance and deliverability. To address this, you decide to use a campaign cleaner tool or script that can automatically detect and remove redundant CSS properties from the child elements.

  By removing these redundant CSS properties from the child elements using [campaign cleaner](https://campaigncleaner.com), you can significantly reduce the overall size of your email code, which can help improve its performance and deliverability. Additionally, by avoiding duplicating CSS code across multiple elements, you can also make your email template easier to maintain and update in the future.
</Note>


# Large Width Removal
Source: https://docs.campaigncleaner.com/features-settings/large-width-removal

Removing large width attributes on elements other than images and tables in your HTML email can improve email performance and deliverability.

# Removing Large Widths On Elements In HTML

When it comes to email design, it's important to optimize your code for performance and deliverability. One way to do this is by removing large width attributes from elements other than images and tables.

Large width attributes can cause issues with email rendering and may make your email appear distorted or broken in certain email clients. Additionally, large width attributes can increase the overall size of your email code, which can slow down load times and negatively impact deliverability.

By removing large width attributes from elements such as `divs`, `spans`, and `other HTML tags`, you can help ensure that your email code is lean and efficient. This can lead to faster load times and better overall performance, which can help improve engagement and increase click-through rates.

## Activating Large Width Removal

This is an experimental feature of [Campain Cleaner](https://campaigncleaner.com), if you use this feature be sure to check your design and ensure it looks as you intended. It's located under advanced setttings.

<img alt="large-width-removal-1.png" />

## Example of Large Width Removal

### Before

<img alt="large-width-removal-2.png" />

### After

<img alt="large-width-removal-3.png" />

As you can see the width of 1000 pixels was removed because it's over the defined 400 in the setting above.

# Use Case to Remove Large Widths On Elements

<Note>
  ABC Corp is a software company that frequently sends out newsletters to its subscribers. They noticed that some of their emails were not rendering properly on certain devices, particularly on mobile devices. After some investigation, they realized that the issue was caused by large fixed widths that were applied to certain elements within their emails.

  To address this issue, ABC Corp decided to use [Campain Cleaner's](https://campaigncleaner.com) large width removal feature. They ran their latest newsletter through the tool and identified several elements with fixed widths that were larger than the campaign size. Using the tool's interface, they were able to quickly remove these large widths and make their emails more mobile-friendly.

  As a result, ABC Corp saw an increase in engagement and click-through rates from their mobile subscribers. They also received fewer complaints about their emails not rendering properly, which improved their overall deliverability and sender reputation. With [Campain Cleaner's](https://campaigncleaner.com) large width removal feature, ABC Corp was able to ensure that their email campaigns were optimized for all devices and reach their audience more effectively
</Note>


# Link Summary
Source: https://docs.campaigncleaner.com/features-settings/link-summary

Ensure your email campaigns are running smoothly with our broken link checker tool. Scan all links in your emails and quickly identify any broken links.

# What is Broken Links Recursion Testing?

Broken links recursion testing is a critical process in ensuring that your email marketing campaigns are effective and reach your target audience without any issues. It involves identifying and fixing any broken links that might exist in your email content to ensure that your subscribers are not disappointed by encountering error pages or landing on pages that are irrelevant to the content they clicked on.

The process of broken links recursion testing involves scanning all the links in your email campaign, including those in images, videos, and hyperlinks, to ensure that they are working correctly. This includes testing links that redirect to other pages to ensure that they land on the correct pages and do not cause any issues with your subscribers. The testing is done recursively, meaning that each link is followed to the end of the chain to ensure that there are no broken links along the way.

The broken links recursion testing process is important because it ensures that your email campaigns are effective in achieving their goals. It helps to increase engagement rates with your subscribers by providing them with valuable and relevant content that they can easily access. Additionally, it helps to maintain your brand reputation and credibility by ensuring that your subscribers do not encounter any issues or frustrations when interacting with your content.

All broken links will show a [HTTP Status Code](/references/https-status-codes)

<img alt="broken-links-2.png" />

In addition, to checking for broken links, we also check for missing title tags and un-secured links.

**In the example below:** I clicked on the number 47 next to the "All Links", you can see the 1 broken links in red.

<img alt="all-links-scanned-1.png" />

<Warning>
  Anchor links are not broadly supported in emails and will be categorized as broken links.
</Warning>

# Video Overview of Broken Link Detection

<video />

# Use Case for Check For Broken Links in Email

<Note>
  XYZ Corporation is a marketing firm that sends out weekly email newsletters to its clients. XYZ Corporation wants to ensure that their email campaigns are professional, polished, and error-free. To achieve this, they use [Campaign Cleaner](https://campaigncleaner.com), which provides a comprehensive analysis of their email campaigns.

  One of the main features that XYZ Corporation uses is the Broken Links Recursion Testing. This feature ensures that all links in the email campaign are working correctly and are not broken. With this feature, XYZ Corporation can quickly identify any broken links and resolve them before sending out the email campaign.

  By using [Campaign Cleaner](https://campaigncleaner.com) to check for broken links, XYZ Corporation ensures that their email campaigns are error-free and professional. This, in turn, helps to maintain their clients' trust and increases the chances of their emails being opened and read.
</Note>


# Non-ASCII Character Replacement
Source: https://docs.campaigncleaner.com/features-settings/non-ascii-character-replacement

Improve email deliverability and avoid spam filters by replacing non-ASCII characters with their ASCII equivalents.

# Why should you replace Non-ASCII Characters?

Non-ASCII characters can cause issues with email deliverability and readability, particularly if the recipient's email client or system does not support the character encoding used. This can result in garbled or unreadable text, which can lead to a poor user experience or even cause the email to be marked as spam. To avoid these issues and ensure that your emails reach your recipients' inboxes, it's important to consider non-ASCII character replacement.

<Info>
  **Quote from [Amazon SES](https://docs.aws.amazon.com/ses/latest/dg/troubleshoot-receiving.html)**

  If your message includes characters that aren't in the ASCII character set, you have to encode those characters using HTML character encoding. One common cause of this issue is the Smart Quotes feature of Microsoft Word. If you often copy content from Word and paste it into your emails, you might encounter this issue. The Smart Quotes feature replaces straight quote characters ("...") with curly quote characters (“...”). Curly quote characters aren't standard ASCII characters. As a result, they might be rendered in some email clients as "??" or as a group of characters such as "“".
</Info>

Non-ASCII character replacement involves replacing non-ASCII characters with their ASCII equivalents, which are supported by most email clients and systems. This can improve the readability and consistency of your emails, making them more accessible to a wider audience. Additionally, some spam filters may flag emails that contain non-ASCII characters as suspicious or spammy, so by using ASCII characters instead, you can reduce the likelihood of your emails being marked as spam. Overall, non-ASCII character replacement is a simple yet effective way to improve email deliverability and ensure that your messages are received and understood by your target audience.

## Examples of NON-ASCII Character Replacements

1. Fancy quotes: `“”` -> `""`
2. Ellipsis: `…` -> `...`
3. Em dash: `—` -> `-`
4. En dash: `–` -> `-`

Replacing these non-ASCII characters with their ASCII equivalents can help ensure that your emails are delivered and displayed correctly across different email clients and systems. It can also make your emails easier to read and understand, improving the overall user experience.

# Video Overview of Non-ASCII Character Replacement

<video />

# Non-ASCII Character Replacement Use Case

<Note>
  As an email marketer, you want to ensure that your emails are accessible to a wide range of subscribers, including those who may be using email clients that do not support non-ASCII characters, such as accented letters or special symbols.

  To address this issue, you decide to replace any non-ASCII characters in your email templates with ASCII equivalents that are more universally supported. For example, you may replace long dashes with a normal hyphen (e.g. — becomes -), and replace fancy double ” with straight quotes ".

  By replacing non-ASCII characters in your emails, you can ensure that your emails are compatible with a wider range of email clients and devices, and reduce the risk of emails not displaying correctly for some subscribers. Additionally, by using plain text alternatives to special symbols, you can improve the overall readability and clarity of your emails, which can lead to higher engagement and conversion rates. And with a tool like [Campaign Cleaner](https://campaigncleaner.com), you can easily scan your email templates for any non-ASCII characters and quickly replace them with their ASCII equivalents, saving you time and effort in the process.
</Note>


# Poor Delivery CDN Detection
Source: https://docs.campaigncleaner.com/features-settings/poor-delivery-cdn-detection

Improve email deliverability with Poor Delivery CDN detection. Learn how removing poor CDNs from campaigns can prevent inboxing issues and enhance performance.

# Can Certain CDN'S really Impact My Inboxing?

When it comes to email deliverability, the content of the email itself is just one piece of the puzzle. The infrastructure supporting the email, including the use of a Content Delivery Network (CDN), can also play a role in whether or not the email reaches the intended recipient's inbox.

A poor delivery CDN can negatively impact email deliverability in several ways. For starters, some CDNs are more likely to be flagged by spam filters and spam traps than others. If an email is sent using a CDN that has a reputation for delivering spam or malicious content, it's more likely to be flagged as spam or even blocked entirely.

Additionally, a poorly configured CDN can cause delays or failures in email delivery. If the CDN is unable to quickly and reliably deliver the email content, it could result in delivery failures or delays that negatively impact the recipient's experience.

By using a tool like [Campaign Cleaner](https://campaigncleaner.com/) to detect and analyze the use of CDNs in email campaigns, businesses can identify and address potential issues that may be impacting deliverability. This could involve switching to a more reputable CDN provider or simply moving your images to our Ultra-Fast Global CDN Edge powered by Cloudflare.

<img alt="poor-delivery-cdn.png" />

# Video Overview of Poor Quality CDN's

<video />

# Poor Delivery CDN Use Case

<Note>
  A startup that provides online training courses to professionals. The company sends regular newsletters to its subscribers to keep them updated about new courses and industry trends.

  The startup uses a free CDN to host the images and videos in their newsletters. However, they start to notice that their deliverability rates are decreasing, and many of their emails are landing in the spam folder of their subscribers.

  Upon analysis using [Campaign Cleaner](https://campaigncleaner.com/), they discover that their CDN is on a list of poor-quality CDNs known to be flagged by spam traps. They also find that some of the images in their emails are not optimized for size, leading to longer loading times and ultimately negatively affecting deliverability.

  The company decides to use Campaign Cleaners CDN with a better reputation that automatically  optimizing their images to reduce loading times. They also keep their text-to-image and text-to-link ratios low and ensure that their links are properly secured with SSL certificates. As a result, they see an improvement in their deliverability rates and engagement metrics. They also receive fewer complaints from subscribers about their emails not loading correctly.
</Note>


# Preheader Management
Source: https://docs.campaigncleaner.com/features-settings/preheader-management

Optimize your email's preheader text for clarity and engagement, ensuring your message makes an impact from the first glance.

# What is a Preheader?

<img alt="preheader-2.png" />

A preheader is the short summary text that follows the subject line when an email is viewed in the inbox. Often overlooked, this snippet is actually a powerful tool that can determine whether an email gets opened. It provides recipients with a preview of the email content before they open it.

## How to Use Preheader Text Effectively

1. **Complement the Subject Line:** Use the preheader to expand on the subject line, giving recipients more context or adding a call to action to entice them to open the email.

2. **Keep It Short and Sweet:** Most email clients display between 40 to 100 characters of preheader text, so be concise. Make sure the most important information is at the beginning.

3. **Provide Value:** Tell your recipients what’s in it for them. Highlight the key benefit or offer you’re presenting in the email.

4. **Create Curiosity:** Without being clickbaity, make your preheader intriguing enough that recipients want to read more.

5. **Avoid Redundancy:** Don’t just repeat your subject line. Use this space to add new information or context.

6. **Test and Optimize:** Like subject lines, preheader texts should be A/B tested. Find out what works best for your audience and adjust accordingly.

7. **Fill in Extra Whitespace:** If you're preheader isn't long enough, we will automatically add in the require extra whitespace for you, to make it show probably on all email clients.

Remember, the preheader is an extension of your subject line and often the final push a recipient needs to open your email. Use it wisely to maximize your email's impact.

# Video Overview of PreHeader Management

<video />


# Punctuation, Caps, and H Tags
Source: https://docs.campaigncleaner.com/features-settings/punctuation-caps-h-tags

In email marketing, attention to punctuation, capitalization, and H tags can significantly impact campaign effectiveness and engagement.

# The Effects Of Successive Punctuation, Caps and H Tags.

When it comes to designing HTML emails, using proper punctuation, capitalization, and heading tags can have a significant impact on the deliverability and effectiveness of your email campaigns. These elements can affect how email clients and spam filters interpret your email content, and can ultimately determine whether your email lands in the inbox or the spam folder.

One common mistake in email design is the use of excessive punctuation or capitalization, such as multiple exclamation marks or all-caps text. These can trigger spam filters and make your email appear unprofessional or even manipulative. In addition, excessive punctuation or capitalization can make your email harder to read and less engaging for your audience.

<Info>
  **Direct Quote From Constant Contact**

  Common things that trigger spam filters:

  * Punctuation - Excessive use of ...,  !!!, and ???
  * Symbols - Excessive use of \$\$, %, and other symbols
  * Uppercase - Writing in ALL CAPS
</Info>

Similarly, using heading tags (H1, H2, H3, etc.) inappropriately or excessively can also trigger spam filters and impact the deliverability of your email. Heading tags should be used to organize your email content and make it easier for readers to navigate, rather than to manipulate search engine rankings or to create visually-striking headlines.

[Campaign Cleaner](https://campaigncleaner.com/) Detects thise conditions and provides a way to automatically fix them at a click of a button.

<img alt="punctuation-4.png" />

# Video Overview of Punctuation, Caps, and H Tags

<video />

# Use Case For Reducing Successive Punctuation and Caps

<Note>
  A clothing retailer is sending out a weekly newsletter to their subscribers with the latest fashion trends and promotions. The email includes several sections with different types of content, such as featured products, new arrivals, and a sale section. The retailer has noticed that some of their email subscribers have reported their emails as spam, and they are concerned about the impact on their deliverability rates.

  Upon analyzing the email code, they discover that some of the sections have successive punctuation marks, capitalization, and H tags. For example, the featured products section has multiple H2 tags with consecutive exclamation marks in the headings, and the sale section has excessive use of capitalization and exclamation marks in the body text.

  To address this issue, the retailer decides to use [Campaign Cleaner](https://campaigncleaner.com/) to identify and remove these conditions from their email code. The tool scans the email code and flags any instances of successive punctuation, capitalization, or H tags, and provides suggestions on how to improve the email content.

  By using [Campaign Cleaner](https://campaigncleaner.com/), the retailer is able to improve the overall quality and readability of their email content, while also minimizing the risk of their emails being flagged as spam. As a result, their email deliverability rates improve, and they are able to reach a wider audience with their promotions and offers.
</Note>


# Resize and Host
Source: https://docs.campaigncleaner.com/features-settings/resize-and-host

Optimize your email campaign performance with Campaign Cleaner's image resizing and hosting services for fast loading and a perfect display across devices.

## Resize, Convert, and Host Your Images

In [Campaign Cleaner](https://campaigncleaner.com), you can access this tool in mulitple locations.

1. From the Tools Menu, under the `Clean Campaign` tab.
2. Under the `Campaign Analysis` tab, there were be a `Resize and Host` link in the `Image Summary` section.

Hovering over the links displays the complete URL of an image and thumbnail of the actual image. A `red sizing icon` indicates an image is too large and should be resized; a `green sizing icon` signals the image is appropriately sized.

By toggling the off switch to on and clicking `Update`. The tool will automatically resize the image, convert unsupported formats to .png, uploads the image to our CDN, and updates the campaign HTML with the new image—all in one step.

The images are store on our Ultra-Fast Global CDN Edge powered by Cloudflare, you can easily manage them with our [CDN Management Tool](/management/cdn-management).

## For Best Results

* Clean your Campaign before using this tool.
* Add a [Surrounding Div](/features-settings/surrounding-html-div) with a max-width.
  <img alt="resize-host-1.png" />

## Automatically Resize and Host

Under `campaign settings` there, you will see an option to automatically resize and host images.  By default we have this turned off.

<img alt="resize-host-4.png" />

The default setting is off because certain images, particularly those used for `Tracking,` should not be relocated. Often, tracking pixels lack an extension, although occasionally they may have one. If your tracking pixels don't include an extension, such as `.jpg`, then you can enable this feature while keeping the `Host Extensionless Images` option set to  `No`.

## All Images Are Changed Creating a New Image Hash

Campaign Cleaner will update the hash of all images hosted on our CDN. This ensures that any images that might have been previously used in spam emails by others no longer carry a negative impact. By modifying the image, we create a unique hash, preventing spam filters from matching it to any past spamming attempts. This helps protect your reputation and ensures your emails aren’t mistake.

# Video Overview of Resizing and Hosting Images On Campaign Cleaner

<video />


# Send Previews
Source: https://docs.campaigncleaner.com/features-settings/send-previews

Use Campaign Cleaner to send test emails and refine your campaign for maximum impact and deliverability.

# How To Easily Send Previews

<img alt="send-preview-1.png" />

**Sending email previews couldn't be easily, located directly off the Tools Menu.**

Simply enter your desired subject line and add the email addresses of up to five recipients to distribute a test version of your campaign. With the added convenience of storing the last 10 recipients you've engaged with, our system eliminates the need to manually re-enter email addresses for each test. This seamless process enables you to gather valuable feedback, verify email placement, and ensure your message resonates as intended before the final send-off.


# Set Max-Width of Images
Source: https://docs.campaigncleaner.com/features-settings/set-max-width-of-images

Learn the importance of setting max-width for images in email design. Enhance user experience, performance, and avoid display issues across email clients.

# Why Should I Set The Max-Width Of Images?

Setting the max-width of images is an essential aspect of email design that can significantly impact the overall user experience and deliverability of your emails. By setting a maximum width for your images, you can ensure that they don't exceed the width of your email layout, which can prevent display issues such as images getting cut off or breaking the layout.

In addition to improving the visual appearance of your emails, sizing down images to your defined max-width, will reduce the size of your email and improve its performance. Large images that are not optimized for email can slow down the load time of your emails, leading to a poor user experience and potentially impacting deliverability.

By setting the max-width of images and resizing over-sized images, you can optimize their size and ensure that they load quickly and display properly on a wide range of email clients and devices. This can help improve the deliverability and engagement of your emails, leading to higher click-through and conversion rates.

**Under Advanced Settings, simply toggle on feature, select your campaign max-width and click apply.**

<img alt="set-maxwidth-images-1.png" />

**Before:**

<img alt="set-maxwidth-images-2.png" />

**After:**

<img alt="set-maxwidth-images-3.png" />

# Use Case for Setting the Max-Width of Images

<Note>
  A home appliance retailer regularly sends promotional emails to its subscribers with information about their latest products and offers. They want to ensure that the emails are visually appealing and showcase their products in the best possible light. However, they also want to avoid potential issues with email deliverability and performance, such as slow load times or broken images.

  To address this, the retailer decides to set a max-width for images in their email templates. They determine that a width of 600 pixels is optimal for their email design and product images. This ensures that the images are large enough to showcase the product details, but not so large that they take up too much space or slow down the email loading time.

  By setting a max-width for images, the retailer can also ensure that their emails are optimized for different screen sizes and devices and even if the image is larger then 600px, it will be scaled down. This can help improve the overall user experience and engagement, leading to higher click-through and conversion rates. Additionally, by avoiding excessively large images, the retailer can minimize the risk of their emails being flagged as spam or low-quality by email filters.

  The retailer also uses [campaign cleaner](https://campaignclener.com)  to optimize their email templates and ensure that they adhere to email best practices. This includes removing unnecessary code and has tools to help identify and optimize image sizes and formats for faster loading times. As a result, the retailer is able to improve the deliverability, performance, and engagement of their email campaigns.
</Note>


# AI Spam Keyword Detection
Source: https://docs.campaigncleaner.com/features-settings/spam-trigger-detection

Prevent your emails from getting flagged as spam with spam trigger detection. Identify and eliminate content that triggers spam filters.

# Removing Spam Trigger Keywords

<img alt="spam-trigger-1.png" />

Email spam trigger detection is an important aspect of email deliverability that helps to ensure that emails are delivered to the intended recipients' inboxes instead of their spam folders. Spam trigger detection involves analyzing emails for certain elements or characteristics that are commonly associated with spam emails, such as certain keywords or phrases, excessive use of punctuation or capitalization, or the inclusion of certain types of attachments.

By detecting these spam triggers, email service providers can prevent spam emails from being delivered to their users' inboxes, which in turn helps to protect users from potential security threats and unwanted marketing messages. However, it is important to note that not all spam triggers are created equal, and some may be more relevant to certain industries or types of emails than others.

To ensure that emails are not incorrectly flagged as spam, it is important to test emails for spam triggers and make necessary adjustments before sending them.

In today's world, it seems to be based on ratio's. Certain common words like `NOW` can be considered a spam trigger, but it depends on content and frequency. `Buy Now` vs `Please pick me up now`. They both have two different meanings, many spam filters use ratio's of trigger words vs actual content in the email to determine if the email should be filtered.

## SpamAssassin Source Code

**Below is the source code from the SpamAssassin, the #1 Open Source anti-spam platform.**

<img alt="spam-triggers-1.png" />

This is just a small sample, `there is literally 100's of spam triggers defined` in SpamAssassin and many more in added plugins.

Different Internet Service Providers (ISPs) employ various technologies for handling emails, which can lead to differing views on the relevance of spam keywords. Some ISPs, such as Gmail and Yahoo, use advanced technologies that may assign less importance to spam keywords and more important to sender reputation when classifying emails.

SpamAssassin doesn't know you sending reputation, it's logic based and relies heavily on Spam Keywords and public blacklist data to make an assessment. The ISPs that depend solely on SpamAssassin, spam keyword detection significantly influence email delivery.

## Cable ISP Companies

Many cable companies still consider spam keywords to be crucial, assigning them a higher weight in their email classification systems. This could be due to their reliance on older, potentially outdated technology or not.

## Spam Confidence Level

Microsoft, for example, uses a "Spam Confidence Level" (SCL) score for every email. This score reflects the likelihood of an email being spam, indicating that spam keywords still play a role in email classification at certain ISPs.

## Apple's Content Scanner

Apple, uses a "Content Scanner" score for every email. This rating indicates the probability of an email being classified as spam, suggesting that spam-related keywords continue to influence email categorization at Apple. If you review email bounces you would see bounces with the code `CS01` or `CS02` in your logs, the `CS` stands for Content Scanner.

## AI Spam Keyword Ratio

At [Campaign Cleaner](https://campaigncleaner.com), we look at ratio's and we seen the best results when the ratio is consistantly below 5%.

Our spam keyword list is derived from Artificial Intelligence (AI) sources. Most of these sources utilize machine learning algorithms, making them highly effective in identifying potential trigger keywords. Given the advanced capabilities of AI in pattern recognition and predictive analysis, it serves as an excellent resource for determining which keywords might trigger spam filters.

# Video Overview of Spam Keywoard Ratios

<video />

# Real World Example Spam Keyword Reduction

<Note>
  ABC Inc. is a financial services company that offers investment products and services to its customers. They send out a regular newsletter to their subscribers, which contains information about the latest trends in the financial industry, investment tips, and news about the company's products and services.

  ABC Inc. noticed that their newsletter was getting caught in spam filters, and their email deliverability was suffering. They conducted an analysis of their emails and found that they were using several spam keywords that were triggering the filters. Words like "free", "earn", "cash", and "guarantee" were being used frequently in their emails.

  To reduce the spam keyword ratio in their emails, ABC Inc. decided to revise their content strategy. They made sure to avoid using spam keywords in their subject lines and body copy. They also used synonyms and alternative phrases to convey the same message without using spam keywords.

  After making these changes, ABC Inc. saw a significant improvement in their email deliverability. Their newsletters were no longer being caught in spam filters, and they were able to reach a larger audience. By using spam keyword reduction techniques, ABC Inc. was able to improve their email marketing performance and connect with their subscribers more effectively.
</Note>


# SpamAssassin Score
Source: https://docs.campaigncleaner.com/features-settings/spamassassin-score

SpamAssassin is a widely-used open-source software utility that evaluates and filters email to identify spam, also known as junk or unsolicited bulk email.

It operates by applying a diverse set of rules that check various aspects of email content, such as header fields, the body of the message, and the frequency of certain words or phrases that are commonly found in spam. Each of these rules adds or subtracts from a total score, which determines whether an email is classified as spam.

## How does it work?

To show you how this works, I put together a simple email below:

Look for the **bold words**; those are our spam bait.

<Card>
  You can make **million dollars** by using our **100% GUARANTEED** system. When our stock screener finds a stock worth investing in, we will send out a **stock alert** to take action on. Disclaimer: We are **not a registered investment advisor**.
</Card>

When Campaign Cleaner cleans your campaign, in the campaign analysis, look for the [Spam Keyword Ratio](/features-settings/spam-trigger-detection)
section. You'll find an entry specifically for SpamAssassin, click on `See Results`, that will pop up in a modal window revealing the results from SpamAssassin.

## The Results

For the example email above, the results are below.

<img alt="SpamAssassin Results" />

The report from SpamAssassin has highlighted five specific items—it's pinpointed the exact keywords we planted as spam indicators. By tweaking or eliminating these problematic words, you'll significantly boost your email's chances of making it to the intended inbox.

# Video Overview of SpamAssassin Scoring

<video />


# Surrounding HTML Div
Source: https://docs.campaigncleaner.com/features-settings/surrounding-html-div

Learn how wrapping your email campaign in a div container with default CSS styles enhances visibility and gives you more control over its appearance.

# The Importance Of A Surrounding DIV

Wrap your email campaign in a div container and apply default CSS styles to control your offer's appearance and make it more visible to readers. This technique is especially helpful for affiliate offers, as it prevents them from inheriting styles from the email client or other styles in your email template. Defining the styles within the div ensures that the offer looks consistent and professional across different devices and email clients.

Commonly used CSS styles for the surrounding div include font-size, text alignment, max-width, and horizontal centering to the parent element. This simple approach can significantly improve the appearance and performance of your email offers by making them more engaging and eye-catching. By increasing click-through rates and conversions, it can help you achieve your marketing goals and improve your ROI.

## Enabling a Surrounding HTML Div

**To enable this setting, go to advanced settings.**

<img alt="surrounding-div-1.png" />

### HTML before the Surrouding Div

<img alt="remove-height-3.png" />

### HTML After the Surrouding Div

<img alt="surrounding-div-2.png" />

# Use Case For A Surrounding DIV

<Note>
  A software company that offers a range of products and services. The company wants to promote a new software product to its email subscribers, but is struggling to get the desired engagement and click-through rates.

  To improve the appearance and performance of the email campaign, the company decides to wrap the campaign in a surrounding div container and apply default CSS styles. By doing so, the company can ensure that the offer looks consistent and professional across different email clients and devices, and prevent the offer from inheriting styles from the reader's email client or other styles in the company's email template.

  The company decides to use the following CSS styles for the surrounding div container: font-size of 16px, text alignment set to center, max-width of 600px, and horizontal centering to the parent element. By defining these styles within the div, the company can take full control of the offer's appearance and make it stand out to readers.

  After implementing the changes, the company sees a significant improvement in the engagement and click-through rates of the email campaign. The offer looks more professional and consistent across different email clients and devices, and is more visible and engaging to readers. Overall, the use of a surrounding div container with default CSS styles has proven to be a simple but effective way to improve the performance of the company's email campaigns.
</Note>


# Tables to Divs Conversion
Source: https://docs.campaigncleaner.com/features-settings/tables-to-divs-conversion

Convert HTML tables to DIVs to improve email rendering and accessibility. Enhance deliverability, readability, and compatibility across devices and clients.

# How does Tables to DIVS Conversion Improve Engagement?

<img alt="html-table-div-2.png" />

Converting HTML tables to DIVs is a popular technique for optimizing email rendering and accessibility. In email design, tables are often used to create complex layouts, but they can be problematic for several reasons.

Firstly, some email clients may not support tables or may render them incorrectly, resulting in broken or messy layouts. Additionally, tables can be difficult to read for users with screen readers or other assistive technologies, which can negatively impact accessibility.

Converting tables to DIVs can solve these issues by providing a more flexible and accessible layout structure. DIVs are more widely supported across email clients and devices, which means that your email is more likely to display correctly for all recipients.

Furthermore, DIVs provide a more streamlined code structure that is easier to read for both users and search engines. This can also help to improve deliverability by reducing the risk of your email being flagged as spam due to bloated or messy code.

## Example of Table to DIV Conversion

### Before

<img alt="html-table-div-1.png" />

### After

<img alt="html-table-div-2.png" />

This is an experimental feature and may change over time, we are mimicing the table structure as multiple divs with a little padding using css and changing the `display` to `flex`. Your results will vary, we recommend not using the feature as it is experimental. The more complicated the table structure, the less likely the conversion will yield the results you're looking for.

<Warning>
  Some email clients don't support advance functionality with divs, always check and make sure things are displaying correctly in all email clients. This is an expiremental feature, basic tables and divs are generally supported in all mail clients.
</Warning>

# Use Case to Replace Tables with Divs

<Note>
  Let's say you're sending a marketing email to your customers, and you want to include a product grid that shows a thumbnail image, product name, and price for each item. Traditionally, you might use a table to structure this content, with each row representing a product and each column representing the thumbnail, name, and price.

  However, some email clients may not render tables properly, resulting in a distorted or broken layout. Additionally, tables can be difficult to read on mobile devices, where screen real estate is limited.

  To solve these problems, you can use divs instead of tables to structure your product grid. Each product would be contained within a div element, with the thumbnail, name, and price each in their own nested divs.

  This approach ensures that your email will look consistent across all email clients, regardless of how they handle tables. It also makes the content more readable and responsive, particularly on mobile devices.

  By replacing tables with divs in your emails, you can improve the overall user experience and ensure that your message is communicated clearly and effectively to your audience.
</Note>


# Text to Image Analysis
Source: https://docs.campaigncleaner.com/features-settings/text-to-image-analysis

Text-To-Image Analysis in email detects images containing text, increasing accessibility and inbox placement. Optimize your campaigns with Campaign Cleaner.

# Is Text To Image Analysis Real?

The text-to-image ratio in an email plays a crucial role in its deliverability. Emails with a high text-to-image ratio are more likely to land in the recipient's inbox rather than the spam folder. Email filters tend to flag emails with high image content as suspicious, as spammers often use images to evade detection. By reducing the text-to-image ratio, you can improve your email deliverability rates and increase the chances of your emails being opened and read.

## SpamAssassin Image Ratio Source Code

**Here's the source code from the SpamAssassin, the #1 Open Source anti-spam platform.**

<img alt="sa-text-image-1.png" />

As you can see, SpamAssassin has specific code that will flag the text to image ratio, we deploy more of a word to image ratio, which seems to work well within the parameters of all spam filters.

Text-to-image analysis is an effective way to determine the text-to-image ratio in your emails. It allows you to identify emails with high image content and take steps to optimize them for better deliverability. Once you identify emails with a high image content, you can reduce it by adding more text or reducing the total number of images being used.

In addition, [Campaign Cleaner](https://campaigncleaner.com/) also provides a way to automatically convert, resize, and host images on out Ultra-Fast Global CDN Edge powered by Cloudflare.

<img alt="text-image-1.png" />

# Video Overview of Text to Image Analysis

<video />

# Use Case For Text To Image Analysis

<Note>
  A marketing team for an e-commerce company has noticed a decline in their email open rates and suspect that their emails are being filtered as spam. Upon running their email campaigns through Campaign Cleaner, they discover that the majority of their emails have a high text to image ratio.

  The team decides to adjust their email templates to include more plain text and fewer images. They also ensure that all images have proper ALT attributes to ensure accessibility. After implementing these changes and running their campaigns through Campaign Cleaner again, they notice a significant increase in email deliverability and open rates.

  Thanks to text to image analysis provided by Campaign Cleaner, the marketing team was able to identify a potential issue with their email campaigns and take action to improve their inboxing rates.
</Note>


# Text to Link Analysis
Source: https://docs.campaigncleaner.com/features-settings/text-to-link-analysis

Improve email deliverability with text-to-link analysis. Learn how to optimize your emails by identifying and reducing excessive links.

# The Text To Link Analysis Guide

Text to link analysis is a critical tool in ensuring that email campaigns get delivered to the intended recipients. The ratio of text to links in an email is one of the key metrics used by email clients to determine if an email is spam or not. A high number of links in an email without enough text content can trigger spam filters and cause the email to be marked as spam or even blocked by the email client.

<Info>
  **Direct Quote from Interseller**

  Sharing links in emails is helpful since recipients can then visit any page you want them to with one simple click. However, including too many links is another email mistake that can get your emails marked as spam.
</Info>

[Campaign Cleaner's](https://campaigncleaner.com) text to link analysis feature helps marketers identify emails with a high ratio of links to text and make necessary adjustments to improve deliverability. The tool analyzes the email and provides a report on the ratio of text to links, which enables marketers to optimize their email content accordingly. By keeping the ratio low, marketers can ensure that their email campaigns are delivered to the intended recipients and avoid triggering spam filters.

In addition, text to link analysis also helps improve engagement rates with email campaigns. Emails with too many links can appear spammy and reduce the trust and credibility of the sender. By focusing on creating high-quality content with a balanced ratio of text to links, marketers can build trust and engagement with their audience, resulting in higher open and click-through rates.

<img alt="text-link-1.png" />

# Video Overview of Text to Link Analysis

<video />

# Use Case for using the Text To Link Ratio Analysis

<Note>
  A company is preparing an email campaign to promote their new product launch. They have included several links within the email to redirect the readers to their product page, social media pages, and other relevant information. Before sending out the email campaign, they use a tool like Campaign Cleaner to analyze the text-to-link ratio and check for missing or unsecured links.

  Upon analysis, the tool highlights a few issues with the links. It shows that there are too many links in the email body, which may trigger spam filters or make the email look cluttered. The tool also points out that one of the links is missing the title attribute, which may affect accessibility for some users.

  The company makes the necessary adjustments, reducing the number of links and adding title attributes to the missing link. This helps to improve the text-to-link ratio and ensures that all links are secured and accessible, increasing the chances of the email being delivered to the recipient's inbox and improving engagement with the email.

  By using Text To Link Analysis, the company was able to improve the overall deliverability and effectiveness of their email campaign, leading to a higher engagement rate and increased conversions.
</Note>


# Unsecured Links
Source: https://docs.campaigncleaner.com/features-settings/unsecured-links

Spam filters often regard unsecured links with suspicion, potentially perceiving your email as a security risk.

This increased scrutiny can lead to a negative evaluation of your email's trustworthiness. As a result, there's a higher likelihood that your email will be redirected to the spam folder, instead of reaching the intended recipient's inbox. To maintain the credibility of your emails and ensure they are delivered effectively, it's crucial to avoid including unsecured links which can trigger these spam filters. By prioritizing secure, HTTPS links, you enhance the perceived security and reliability of your emails, thereby reducing the risk of them being categorized as spam.

## What Makes a Link Unsecured?

Links lacking an SSL certificate result in unencrypted data transmission between your computer and the website. The 'S' in HTTPS, FTPS, and similar protocols signifies `Secured`, indicating that these links do have SSL certificates and offer encrypted communication.

## Identifying Unsecured Links

At Campaign Cleaner, we specialize in identifying unsecured links and highlighting them for you. In the [Link Summary](/features-settings/link-summary/) section you'll find an entry specifically for unsecured links, accompanied by a numerical value. Should this number exceed 0, simply clicking on it will open a modal window, revealing the unsecured links detected in your content as seen below.

<img alt="Unsecured Links" />


# Unsupported Image Detection
Source: https://docs.campaigncleaner.com/features-settings/unsupported-image-detection

Learn about the limitations of different image types in emails and why they may be unsupported across email clients, impacting your campaign's visual appeal.

# Unsupported Images

When crafting email campaigns, the choice of image format is crucial, not only for visual appeal but also for ensuring broad compatibility across email clients. However, formats such as `.avic, .tiff, .svg, .webp, .apng, and .heic` often pose challenges, as they are not widely supported by mainstream email clients.

**.AVIC** and **.TIFF** files, known for their high quality and large file sizes, are often incompatible with email environments that prioritize quick loading times and data conservation. This can lead to images not being displayed at all, forcing your message to lose its intended impact.

**.SVG** files, while scalable and high in quality, face inconsistent support due to security concerns and the complexity of rendering scalable vector graphics in the email.

**.WEBP**, designed by Google for the web, offers superior compression and quality characteristics. However, its support in email clients is not universal, resulting in images that may not appear for all recipients.

**.APNG** files provide an alternative to GIFs with better color support and transparency. Despite their advantages, they are not yet commonly supported in email clients, which can lead to fallback issues or entirely missing animations.

**.HEIC**, the file format introduced by Apple, offers high-quality images at half the file size of JPEGs. Nevertheless, it's a relatively new format and is not supported by the majority of email clients.

The lack of support for these formats can significantly impact the presentation and delivery of your emails. Not only can it lead to visual discrepancies between what you send and what the recipient sees, but it may also increase the risk of emails being marked as spam or not being delivered at all due to the unfamiliarity of the formats with email service providers.

To ensure maximum compatibility and maintain the integrity of your email's design, it is recommended to use more universally accepted formats such as .JPEG, .PNG, and .GIF. These formats are well-recognized by most email clients and offer a balance between quality and performance, making them a safer choice for email marketing campaigns.

<img alt="Unsupported Images" />

[Campaign Cleaner](https://campaigncleaner.com) has the ability to resize, convert and host all un-supported image types on our Ultra-Fast Global CDN Edge powered by Cloudflare.


# DKIM Generator
Source: https://docs.campaigncleaner.com/free-tools/dkim-generator





# DKIM Lookup
Source: https://docs.campaigncleaner.com/free-tools/dkim-lookup





# DMARC Generator
Source: https://docs.campaigncleaner.com/free-tools/dmarc-generator





# DMARC Lookup
Source: https://docs.campaigncleaner.com/free-tools/dmarc-lookup





# EML to HTML Converter
Source: https://docs.campaigncleaner.com/free-tools/email-html





# Email List Analyzer
Source: https://docs.campaigncleaner.com/free-tools/email-list-analyzer





# FCrDNS Tester
Source: https://docs.campaigncleaner.com/free-tools/fcrdns-tester





# eMail Tester
Source: https://docs.campaigncleaner.com/free-tools/mail-tester





# MX Checker
Source: https://docs.campaigncleaner.com/free-tools/mx-checker





# Email Preheader Generator
Source: https://docs.campaigncleaner.com/free-tools/preheader-generator





# SPF Generator
Source: https://docs.campaigncleaner.com/free-tools/spf-generator





# SPF Lookup
Source: https://docs.campaigncleaner.com/free-tools/spf-lookup





# All Integrations
Source: https://docs.campaigncleaner.com/integrations/integrations

Discover the power of Campaign Cleaner API integration, your ultimate solution for streamlining and optimizing your marketing campaigns.

# How to Integrate with Campaign Cleaner

Explore the multitude of integration possibilities with Campaign Cleaner for seamless incorporation into your daily email workflows. Take advantage of our Zapier Integrations, providing connectivity to over 5000+ diverse Zaps. Alternatively, craft your own custom integration using our meticulously documented API within Postman, enabling professional-grade control and flexibility. Unleash the potential of Campaign Cleaner by seamlessly integrating it into your mailing processes, tailored to your specific needs.

<img alt="zapier-integration.png" />

<img alt="api-documentation-3.png" />

**API Documentation Links:**

* [Postman](https://api-docs.campaigncleaner.com/)

* [Swagger](https://https://campaign-cleaner.github.io/swagger//)


# Acceptable Use Policy
Source: https://docs.campaigncleaner.com/legal-and-compliance/acceptable-use-policy

Explore our Acceptable Use Policy to understand the guidelines that ensure a safe and respectful digital environment.

[Campaign Cleaner](https://campaigncleaner.com) is a software application designed to help email marketers optimize their campaigns for delivery and performance. To ensure the best experience for all of our users, we have established the following acceptable use policy. By using Campaign Cleaner, you agree to abide by these guidelines.

## Compliance with the Law

You agree to comply with all local, state, and federal laws regarding the use of email marketing software. You may not use Campaign Cleaner for any illegal activity.

## Prohibited Content

You may not use Campaign Cleaner to create or distribute any content that is harmful, abusive, harassing, defamatory, or obscene. Additionally, you may not create or distribute content that is fraudulent, misleading, or infringes on the intellectual property rights of others.

## Email Campaigns

You may only use Campaign Cleaner to optimize email campaigns that are permission-based and contain valid email addresses. You may not use Campaign Cleaner to send spam or any unsolicited email messages.

## Account Security

You are responsible for maintaining the security of your Campaign Cleaner account. You may not share your login credentials with any third party or allow any unauthorized access to your account.

## Performance

You agree to use Campaign Cleaner in a manner that does not negatively impact the performance of the application or its servers. This includes but is not limited to sending excessive requests or using automated tools to access Campaign Cleaner.

## User Conduct

You agree to use Campaign Cleaner in a manner that is respectful of other users. You may not engage in any activity that is disruptive or harmful to other users.

## Prohibited Uses

In using our software, users agree to comply with all applicable laws and regulations, and they must not engage in activities that harm our company, software, systems, or users. Specifically, users must not:

Use our software to process, store, or transmit any information that includes personal identifiable information, financial details, health-related information, confidential business information, or any other type of information that is considered private, sensitive, confidential, or protected under applicable laws or regulations. Our software is intended solely for the purpose of processing and analyzing email campaigns that do not contain such sensitive or private information.

Use our software in a manner that violates the privacy rights, publicity rights, copyrights, contract rights, intellectual property rights, or any other rights of any person or entity.

Failure to comply with these rules represents a breach of this Acceptable Use Policy, and may result in the suspension or termination of the user's account, legal action, and other penalties.

## Termination

We reserve the right to terminate any user's access to Campaign Cleaner for violation of this acceptable use policy. Additionally, we may terminate any account that remains inactive for an extended period of time.

By using Campaign Cleaner, you agree to abide by this acceptable use policy. We reserve the right to modify this policy at any time without notice. If you have any questions about this policy, please contact us


# California Consumer Privacy Act (CCPA)
Source: https://docs.campaigncleaner.com/legal-and-compliance/ccpa

Learn your rights under the California Consumer Privacy Act (CCPA) and how Campaign Cleaner LLC ensures your privacy protection.

Our dedicated CCPA page provides an in-depth overview of how this important legislation impacts you, detailing your rights to access, control, and delete personal information collected by businesses. Understand how we comply with CCPA guidelines to ensure your data privacy and security. Empowering California residents with knowledge and control over their personal information.

**Effective Date:** 5/1/2023

At [Campaign Cleaner](https://campaigncleaner.com) LLC, we respect and value the privacy of our users. This CCPA Compliance Document outlines our practices concerning the collection, use, and disclosure of personal information of California residents in accordance with the California Consumer Privacy Act (CCPA).

## Information We Collect

Campaign Cleaner LLC collects information that identifies, relates to, describes, references, is capable of being associated with, or could reasonably be linked, directly or indirectly, with a particular consumer or device ("personal information"). The categories of personal information we collect include identifiers, commercial information, internet or other similar network activity, and professional or employment-related information.

## Personal Information We Do Not Collect

Our software is designed for the sole purpose of processing and analyzing data related to email campaigns. These email campaigns should not contain any personal information as defined by the California Consumer Privacy Act (CCPA). This includes, but is not limited to, personal identifiers, characteristics of protected classifications under California or federal law, commercial information, biometric information, internet or other electronic network activity information, geolocation data, sensory data, professional or employment-related information, non-public education information, or inferences drawn from other personal information.

As such, we do not intentionally collect, process, or store personal information through our software. Our users agree to these terms in our Terms of Use and are responsible for ensuring that the content of their email campaigns complies with this policy. In the event that we become aware that personal information has been processed through our software, we will take appropriate steps to remove this data in accordance with our data handling policies and applicable laws.

## Use of Personal Information

We may use the personal information we collect for business purposes, including to optimize your email campaigns, provide customer service, process transactions, and improve our services.

## Sharing Personal Information

Campaign Cleaner LLC may share your personal information with service providers or third parties for business purposes. When we disclose personal information for a business purpose, we enter a contract that describes the purpose and requires the recipient to keep that personal information confidential and not use it for any purpose except performing the contract.

## Your Rights and Choices

The CCPA provides California residents with specific rights regarding their personal information. These include the right to request that Campaign Cleaner disclose certain information to you about our collection and use of your personal information over the past 12 months, and the right to ask that we delete any of your personal information that we have collected from you and retained, subject to certain exceptions.

## How to Exercise Your Rights

To exercise your rights under the CCPA, please submit a verifiable consumer request using one of the contact methods listed here: [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html)

## Changes to This CCPA Compliance Document

Campaign Cleaner LLC reserves the right to amend this CCPA Compliance Document at our discretion and at any time. When we make changes to this CCPA Compliance Document, we will post the updated notice here on our website and update the notice's effective date.

## Contact Information

If you have any questions or comments about this CCPA Compliance Document, the ways in which Campaign Cleaner LLC collects and uses your information, your choices and rights regarding such use, or wish to exercise your rights under California law, please do not hesitate to contact us with one of the ways provided here: [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html)


# Cookies Policy
Source: https://docs.campaigncleaner.com/legal-and-compliance/cookie-policy

Read our Cookie Policy to understand how we use cookies to improve your experience and ensure compliance with privacy regulations.

Campaign Cleaner LLC  ("we", "us", "our"), along with our third-party service providers, utilizes various technologies, including cookies and web beacons, to collect information. For more details, please refer to our [Privacy Policy](/legal-and-compliance/privacy-policy).

## Our Use of Cookies

At Campaign Cleaner LLC, we employ cookies to facilitate seamless and meaningful interactions with our products and website(s) (referred to as "Services"). These cookies, along with similar technologies like HTML5 localStorage, assist in keeping you logged in, remembering your preferences, and providing insights for the future development of Campaign Cleaner.

A cookie is a small data file that our web server stores on your computer or mobile device, which is sent back to us by your browser upon revisiting our website. Cookies do not necessarily identify you when you are simply browsing Campaign Cleaner. However, they may store a unique identifier for each logged-in user. The cookies set by Campaign Cleaner are essential for website functionality, performance, or additional features. By using our website, you consent to the placement of these types of cookies on your computer or device.

## How We Use Cookies

1. **Strictly Necessary**: These cookies and related technologies are indispensable for enabling websites to provide the requested features, such as recognizing your logged-in status.
2. **Functionality**: Cookies are utilized to remember your choices, such as language preferences or search parameters, allowing us to tailor your user experience and make the Services more personalized.
3. **Performance and Analytics**: Cookies and similar technologies collect information on how users interact with the Services, helping us enhance website operation, navigation, user experience, and marketing campaigns. For instance, we use Google Analytics cookies to understand visitor behavior, including arrival and browsing patterns.
4. **Social Media Connections**: Cookies come into play when you share information through social media buttons or interact with our content on social media platforms. This allows social networks to track such activities, which may be associated with targeted advertising efforts.

## Opting Out of Cookies

You have the option to opt out of specific types of cookies. You can instruct your browser to reject cookies or prompt you before accepting cookies from websites you visit. Most browsers offer management tools for removing HTML5 local storage objects.

However, please note that by declining cookies, certain aspects of our Services may not be accessible or fully functional. Opting out is not applicable to cookies or technologies that are strictly necessary for the Services.

## Third-Party Cookies

It is important to note that third parties, including advertising networks and external service providers for web traffic analysis, may also employ cookies on our Services. We have limited control over these "third-party" cookies. We suggest reviewing the respective privacy policies of these external services to understand the data they collect and their data handling practices.

Please find below some of the external service providers and their privacy policy links:

* Google Analytics, Google Tag Manager, Recaptcha: [Google Privacy Policy](https://policies.google.com/privacy)
* Stripe: [Stripe Privacy Policy](https://stripe.com/privacy)
* FreshDesk:  [Legal Documents](https://www.freshworks.com/legal)

## Google Analytics Usage

Campaign Cleaner employs Google Analytics as a third-party tracking service. However, we do not use it to track individuals or collect personal data. Google Analytics helps us gather insights into website performance and user behavior in a general sense. This includes evaluating website usage, generating statistical reports, and enhancing content and website functionality.

Google Analytics collects information over time, such as IP addresses (which are not accessible to us), browser type, internet service provider, referring and exit pages, time stamp, and similar data about your use of our website. We do not link this information to your username. Google provides further information about its own privacy practices and offers a browser add-on to opt out of Google Analytics tracking.

## Updates to this Policy

This Cookies Policy may be updated from time to time. If we make any changes, we will notify you by revising the "effective starting" date at the top of this Policy. If you have any questions about how we use cookies, you can [contact us](https://campaigncleaner.com/email-deliverability-consultant.html)

## Additional Cookie Policy

We also maintain a seperate cookie policy at [Termly](https://app.termly.io/document/cookie-policy/0e39488c-6ad7-42a6-b03a-5ac1e4571b64) which manages the cookie banner and your perference center.


# Data Processing Addendum
Source: https://docs.campaigncleaner.com/legal-and-compliance/data-processing-addendum

We are prepared to finalize the Data Processing Addendum (DPA) with our customers as mandated by the European Union General Data Protection Regulation (GDPR).

## Obtain a Copy of the DPA

To obtain a copy of the DPA, kindly submit a request through our [contact us](https://campaigncleaner.com/email-deliverability-consultant.html) page.

Before entering into the DPA, we will assess the legal grounds for such an agreement. Specifically, we will seek clarification regarding the nature of the data being transmitted and whether it may include personal data.

Our software primarily focuses on cleaning and optimizing campaign data to be sent out to the public , rather than sub-processing personal data. However, we acknowledge that some of the content you share may contain personal data, which falls under GDPR requirements.

We also acknowledge we collect and store registration information which includes full name and email address.

Once the details are confirmed and the need for a DPA is established, we will customize the DPA to align with the specific type of personal data you share with us.

Therefore, when submitting your request, please specify the details of the personal data you are currently sending or planning to send to us.

You can refer to the definition of [personal data](https://gdpr.eu/eu-gdpr-personal-data/) to understand what falls within its scope.


# GDPR Policy and Commitment
Source: https://docs.campaigncleaner.com/legal-and-compliance/gdpr

Learn about our GDPR policy and commitment to protecting your personal data. We ensure compliance with data privacy regulations for your security.

Campaign Cleaner LLC ("we", "us", "our") is committed to safeguarding the privacy of our users ("you", "your"). We comply with the EU General Data Protection Regulation (GDPR), ensuring the highest standards of data protection.

## How We Use Your Data

We use the data we collect from you to provide our services, manage your account, process payments, communicate with you about your account or our services, provide customer service, and improve our services. The legal basis for processing your personal data depends on the specific context in which we collect it.

## Nature of the Data Processing

Our software designed for the sole purpose of processing and analyzing data related to email campaigns. In accordance with the Data Processor's Terms of Use and Privacy Policy, these email campaigns should not contain any sensitive or private data.

You agrees to only use the software to process data that does not include personal identifiable information, financial details, health-related information, confidential business information, or any other type of information that is considered private, sensitive, confidential, or protected under applicable laws or regulations.

You assumes responsibility for ensuring the content of email campaigns aligns with these requirements. Any non-compliance with this clause will be considered a breach of this agreement.

## Data Minimization

We adhere to the principle of data minimization, ensuring that personal data collected is adequate, relevant, and limited to what is necessary for the purposes it is processed. We only collect the information necessary to provide our services, enhance user experience, and fulfill our business and legal obligations.

## Data Accuracy

We strive to keep your data accurate and up-to-date. We encourage you to regularly review your information and update it as necessary in your account settings.

## Storage Limitation

Personal data is retained only for as long as necessary for the purposes for which it was collected. After the retention period, we securely delete or anonymize your data so that it no longer identifies you.

## Integrity and Confidentiality

We prioritize data integrity and confidentiality by implementing robust security measures. Your data is protected from unauthorized access, disclosure, alteration, and destruction. Access to your personal data is restricted to employees and third-party processors who have a business need for such access.

## Security

We have implemented appropriate technical and organizational security measures designed to protect your personal data from accidental loss and unauthorized access, use, alteration, or disclosure. However, please also remember that we cannot guarantee that the internet itself is 100% secure.

## Sharing and Disclosure of Your Personal Information

We may share your personal data with third-party service providers necessary for providing our services. These include IT and system administration service providers, banking service providers, and customer support service providers.

## Data Subject Rights

Campaign Cleaner respects the rights of Data Subjects provided under the GDPR including the right to access, rectification, erasure, data portability, restriction of processing, and objection.

## Data Breaches

We have procedures in place to detect, report and investigate a Personal Data breach and will notify the data subjects or the ICO where we are legally required to do so.

## Changes To Our Privacy Policy

We may change this privacy policy from time to time. We will post any privacy policy changes on this page and, if the changes are significant, we will provide a more prominent notice.

## What is required from you?

If your company is subject to GDPR and you have not yet established a Data Processing Addendum (DPA) with us, please proceed to download the [DPA](/legal-and-compliance/data-processing-addendum) from our platform and carefully follow the instructions provided to sign and return it to us.

Additionally, we recommend reviewing your [Terms of Service](/legal-and-compliance/terms-of-use), [Privacy Policy](/legal-and-compliance/privacy-policy) and [Cookies Policy](/legal-and-compliance/cookie-policy). This will allow you to familiarize yourself with our data privacy practices and commitments, ensuring they align with your own usage of our services for collecting, processing, and utilizing customer data. It is important to ensure consistency and compliance in this regard.

## Contact Us

If you have any questions about this GDPR Compliance Statement, or our practices related to your personal data, please contact using one of the methods at [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html)


# Legal Policies
Source: https://docs.campaigncleaner.com/legal-and-compliance/legal-policies

This dedicated section provides detailed insights into our terms of service, privacy policy, user agreements, and other essential legal documents.

Stay informed about your rights and responsibilities as a user, understanding how we protect your data and respect your privacy. Essential reading for a secure and informed user experience on our platform

# Please Read Through Our Policies

* [Privacy Policy](/legal-and-compliance/privacy-policy)
* [Terms of Service/Use/Conditions](/legal-and-compliance/terms-of-use)
* [GDPR Compliance Statement](/legal-and-compliance/gdpr)
* [CCPA Compliance Statement](/legal-and-compliance/ccpa)
* [Acceptable Use Policy](/legal-and-compliance/acceptable-use-policy)
* [Data Processing Addendum](/legal-and-compliance/data-processing-addendum)
* [Cookie Consent](/legal-and-compliance/cookie-policy)


# Privacy Policy
Source: https://docs.campaigncleaner.com/legal-and-compliance/privacy-policy

Campaign Cleaner LLC is dedicated to protecting your privacy. Learn how we safeguard your personal information and ensure compliance with privacy regulations.

This policy sets out the basis on which any personal data we collect from you, or that you provide to us, will be processed by us.

## Information We Collect

We may collect, store and use the following kinds of personal data:

* Information about your computer and about your visits to and use of our website.
* Information relating to any transactions carried out between you and us, including information relating to any purchases you make of our goods or services.
* Information that you provide to us for the purpose of registering with us and/or subscribing to our website services and/or email notifications.

## Using Your Personal Data#\#

Personal data submitted on this website will be used for the purposes specified in this privacy policy or in relevant parts of the website. In addition to the uses identified elsewhere in this privacy policy, we may use your personal information to:

* Improve your browsing experience by personalizing the website.
* Send information to you which we think may be of interest to you by post or by email or similar technology.
* Provide other companies with statistical information about our users - but this information will not be used to identify any individual user.
* Process transactions you make on our site, which may involve sharing such information with our payment processors or other necessary third-party platforms.
* Provide support and improve our services, which may require sharing your information with our customer support software.

## Data Collection and Usage

Our software is designed to process and analyze data related to email campaigns. In alignment with our Terms of Use, these email campaigns should not contain sensitive or private information.

It is the responsibility of the user to ensure that the content of email campaigns does not contain personal identifiable information, financial details, health-related information, confidential business information, or any other type of information that is deemed private, sensitive, confidential, or protected under applicable laws or regulations.

We do not intentionally collect or process sensitive or private data through our software. If we become aware that such information has been processed, we will take appropriate steps to remove this data in accordance with our data handling policies and applicable laws.

Please refer to our Terms of Use for further information about the intended and appropriate use of our software.

## Disclosures

We may disclose information about you to any of our employees, officers, agents, suppliers or subcontractors insofar as reasonably necessary for the purposes as set out in this privacy policy.

In addition, we may disclose information about you:

* To the extent that we are required to do so by law.
* In connection with any legal proceedings or prospective legal proceedings.
* In order to establish, exercise or defend our legal rights.
* Policy Amendments

We may also share your personal information with:

* Third-party vendors who provide services on our behalf, such as payment processing, customer service, and marketing efforts.
* Other third parties to comply with legal requirements such as the demands of applicable subpoenas and court orders; to verify or enforce our terms of use, our other rights, or other applicable policies; to address fraud, security or technical issues; to respond to an emergency; or otherwise to protect the rights, property or security of our customers or third parties.

We may update this privacy policy from time-to-time by posting a new version on our website. You should check this page occasionally to ensure you are happy with any changes.

## Your Rights

You may instruct us to provide you with any personal information we hold about you. Provision of such information may be subject to a fee.

## Contact

If you have any questions about this privacy policy or our treatment of your personal data, please contact us using one of the methods provided here: [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html)


# Subprocessors
Source: https://docs.campaigncleaner.com/legal-and-compliance/subprocessors

Learn about our subprocessors and how we ensure data protection and compliance with privacy regulations in our services.

Campaign Cleaner LLC ("we", "us", "our") uses a range of third-party subprocessors to assist in providing our services. A subprocessor is a third-party data processor engaged by Campaign Cleaner, who has or potentially will have access to or process service data (which may contain personal data).

## What is a subprocessor?

A subprocessor refers to a third-party data processor that Campaign Cleaner LLC engages to access or process Customer Data, which may include Personal Data. We employ various subprocessors to fulfill different functions, as detailed in the tables below.

\##Due diligence ##

We commit to employing a commercially reasonable selection process, wherein we evaluate the security, privacy, and confidentiality practices of potential subprocessors who may have access to or process Customer Data. We also monitor our providers' ongoing compliance efforts and adjust our own processes to take advantage of any additional privacy options that become available.

The following is an up-to-date list (as of the date of this document) of the names and locations of Campaign Cleaner LLC subprocessors.

## Subprocessors

1. Stripe Inc.

   **Purpose**: Payment processing

   **Location**: United States

   **Website**: [https://stripe.com](https://stripe.com)

   **Legal Docs**: [https://stripe.com/privacy](https://stripe.com/privacy)

2. Cloudflare, Inc.

   **Purpose**: Web infrastructure and website security services

   **Location**: United States

   **Website**: [https://cloudflare.com](https://cloudflare.com)

   **Legal Docs**: [https://www.cloudflare.com/privacypolicy/](https://www.cloudflare.com/privacypolicy/)

3. QuadraNet, Inc.

   **Purpose**: Infrastructure provider (servers, network)

   **Location**: United States

   **Website**: [https://quadranet.com](https://quadranet.com)

   **Legal Docs**: [https://quadranet.co.uk/privacy-policy/](https://quadranet.co.uk/privacy-policy/)

4. Google LLC (Google Analytics, Tag Manager, Recaptcha)

   **Purpose**: Website analytics, Bot Protection, Script Deployment

   **Location**: United States

   **Website**: [https://analytics.google.com](https://analytics.google.com)

   **Legal Docs**: [https://policies.google.com/privacy/](https://policies.google.com/privacy/)

5. Freshdesk (Help Desk Software)

   **Purpose**: Support Management

   **Location**: United States

   **Website**: [https://freshworks.com](https://freshworks.com)

   **Legal Docs**: [https://www.freshworks.com/legal/](https://www.freshworks.com/legal/)

6. WebSpellChecker (Spelling and Grammar Checking)

   **Purpose**: Spell Checking

   **Location**: Ukraine (Amazon AWS US East Servers)

   **Website**: [https://www.webspellchecker.com](https://www.webspellchecker.com)

   **Legal Docs**: [https://webspellchecker.com/legal/](https://webspellchecker.com/legal/)

7. OpenAI (AI Intelligence)

   **Purpose**: AGI

   **Location**: United States

   **Website**: [https://openai.com/](https://openai.com/)

   **Legal Docs**: [https://trust.openai.com/](https://trust.openai.com/)

## Updates

This list may be updated from time to time as our business needs change and technological environments evolve. Please check back regularly for updates.

## Contact Us

If you have any questions about this Subprocessors document, or our practices related to your personal data, please contact us at [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html)


# Terms of Use
Source: https://docs.campaigncleaner.com/legal-and-compliance/terms-of-use



Welcome to Campaign Cleaner LLC. These Terms of Use (“Terms”) apply to your use of the Campaign Cleaner website and software (collectively, the “Service”). By accessing or using the Service, you agree to be bound by these Terms, as well as our Privacy Policy, which is incorporated by reference into these Terms.

## License Grant

Subject to your compliance with these Terms, Campaign Cleaner LLC grants you a limited, revocable, non-exclusive, non-transferable license to use the Service for the purpose of optimizing your email campaigns. This license is for personal or internal business purposes only and does not include any resale or commercial use of the Service.

## Subscription

Some of the functionality of the Service is available for free, while other features require a monthly subscription fee. You can review the subscription page on our website to see which features are included in each category. By subscribing to the Service, you agree to pay the subscription fee and comply with the terms of the subscription agreement.

## Modifications

While Campaign Cleaner LLC strives to provide accurate and helpful modifications to your email campaigns, it is your responsibility to review all modifications made by the Service for accuracy and appropriateness before choosing to send your email campaign. Campaign Cleaner LLC does not guarantee that the Service will be perfect or error-free, and is not responsible for any damages or losses that may result from the use of the Service.

## Billing

If you subscribe to the Service, you agree to pay the subscription fee on a monthly basis. You can update or change your billing information at any time by logging into your account on our website. If your payment is late or fails, Campaign Cleaner may suspend or terminate your access to the Service. Campaign Cleaner LLC reserves the right to change the subscription fee or features of the Service at any time, with or without notice.

## Customer Support

If you have any questions or concerns about the Service, please contact us using one of the methods provided here: [https://campaigncleaner.com/email-deliverability-consultant.html](https://campaigncleaner.com/email-deliverability-consultant.html). We will make reasonable efforts to respond to your inquiries in a timely and helpful manner.

## Intellectual Property

All intellectual property rights in the Service are owned by Campaign Cleaner or its licensors. You may not use any of the Campaign Cleaner LLC trademarks or logos without our prior written consent. Users of Campaign Cleaner LLC may not reverse engineer the product for their own personal or commercial use.

## Intended Use of Software

The software provided is intended solely for the purpose of processing and analyzing email campaigns. The User agrees and acknowledges that these email campaigns are designed not to contain sensitive or private information.

The User hereby affirms that the software shall not be used to process, analyze, store, transmit, or otherwise handle sensitive or private information including, but not limited to, personal identifiable information, financial details, health-related information, confidential business information, or any other type of information that is deemed private, sensitive, confidential, or protected under applicable laws or regulations.

The User will be solely responsible for ensuring that the content of email campaigns aligns with this requirement. In the event the User fails to comply with this clause, the User agrees to indemnify and hold harmless the Provider from any and all claims, damages, liabilities, costs, losses, and expenses arising from or related to the User's non-compliance with this intended use provision.

By using the software, the User expressly agrees to these terms and conditions related to the intended use of the software. Non-compliance with these conditions may result in termination of the User's access to the software and potential legal action.

## Disclaimer of Warranties

The Service is provided “as is” and “as available,” without any warranties of any kind, either express or implied. Campaign Cleaner LLC disclaims all warranties, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement.

## Limitation of Liability

In no event shall Campaign Cleaner LLC be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits or revenues, whether incurred directly or indirectly, or any loss of data, use, goodwill, or other intangible losses, resulting from your access to or use of the Service, even if Campaign Cleaner LLC has been advised of the possibility of such damages.

## Governing Law

These Terms shall be governed by and construed in accordance with the laws of the State of Florida, without giving effect to any principles of conflicts of law.

## Entire Agreement

These Terms, together with our Privacy Policy and any other agreements or policies referenced herein, constitute the entire agreement between you and Campaign Cleaner LLC regarding your use of the Service, and supersede all prior or contemporaneous communications and proposals, whether oral or written, between you and Campaign Cleaner LLC. Any waiver of any provision of these Terms will be effective only if in writing and signed by Campaign Cleaner LLC.


# API Information
Source: https://docs.campaigncleaner.com/management/api

Explore Campaign Cleaner's API to unlock the full potential of your email marketing campaigns. Enhance efficiency, integration, and performance.

# Our API - Everything You Need To Know

Explore Campaign Cleaner's API to unlock the full potential of your email marketing campaigns. Leverage our advanced APIs for seamless integration, superior control, and enhanced functionality, all designed to optimize your campaign performance and deliverability.

[API Management](/management/api-management) - Create API Keys for different use cases and different users on your account.

Our API documentation is crafted using the two most globally recognized and extensively used platform for API testing. This enables you to instantly download our collection and begin utilizing them in Postman, facilitating a swift and efficient start towards integrating [Campaign Cleaner](https://campaigncleaner.com) into your workflow.

[API Documentation in Postman](https://api-docs.campaigncleaner.com/)

<img alt="postman.png" />

[API Documentation in Swagger](https://campaign-cleaner.github.io/swagger/)

<img alt="swagger.png" />

**API Credits** - At present, only one of our API Endpoints necessitates the use of an API Credit. All paid subscriptions include API Credits that refresh upon the renewal date of the subscription.


# API Management
Source: https://docs.campaigncleaner.com/management/api-management

Enhance your email marketing campaigns with our advanced API Management solution. Seamlessly integrate, manage and optimize your APIs to deliver personalized email content, automate campaigns, and monitor results.

## Generate and Manage You API Keys

[Campaign Cleaner](https://campaigncleaner.com) enables you to generate API Keys for various use cases and users within your account. Every API key can be regenerated, replacing the old API Key with a new one. While you can delete and modify each key, the Account Key remains the only exception to this rule.

<img alt="manage-api-keys-2.png" />

## API Documentation

In addition to managing your API Keys, we encourage you to explore our comprehensive [API Documentation](https://api-docs.campaigncleaner.com). This resource provides insights into the various APIs and guides on how to utilize them effectively.


# CDN Management
Source: https://docs.campaigncleaner.com/management/cdn-management

Boost your email campaign performance with our CDN Management Tools for email images - ensure faster loading times, improved reliability, and higher open rates

# How To Effectively Manage Your CDN

At [Campaign Cleaner](https://campaigncleaner.com), we understand the significance of managing and hosting your images to ensure they're optimized for size and speed. Our CDN Management tools offer a seamless interface to upload, remove, copy the link, and inspect your images on our content delivery network.

Our [Resize And Host](/features-settings/resize-and-host) feature intelligently scales images to their actual display dimensions, enhancing email load times, before adding it to our CDN.

Beyond email, our CDN is versatile, allowing you to host images for various other needs. However, please be aware that images on our CDN are publicly accessible—only upload what you're comfortable sharing with the world.

<Warning>
  Note that images will be purged from our CDN 30 days after your subscription end, assuring that emails sent during your subscription period maintain their integrity for recipients who may not check their inbox regularly.
</Warning>

<img alt="cdn-management-3.png" />


# Inbox Placement Test Center
Source: https://docs.campaigncleaner.com/other-tools/inbox-placement-tester

Ensure Your Emails Reach the Inbox, Not the Spam Folder.

# What is The Inbox Placement Test Center?

The Inbox Placement Test Center is a tool designed to help you determine where your emails land when sent to major ISPs like Gmail, Yahoo, Hotmail, and Apple Mail. Instead of waiting for real-world campaign performance data, this tool lets you proactively check whether your emails are reaching the inbox, spam folder, or are being blocked entirely.

## How does it work?

We provide multiple seed addresses across various ISPs, allowing you to see exactly how your email is treated by each provider. Many ISPs distribute emails inconsistently—meaning the same email may land in the inbox for some users but go to spam for others.

For example, an ISP might deliver:

* 30% of your emails to the inbox
* 70% to the spam folder

Additionally, ISPs analyze recipient engagement (opens, clicks, replies, and deletions) to adjust future placements. Over time, emails that initially land in spam may be dynamically moved to the inbox—or vice versa—depending on how users interact with them. This dynamic filtering makes ongoing testing critical for maintaining strong deliverability.

## Important Considerations Before Running an Inbox Placement Test

To get the most accurate results, send each seed address a separate email.

* **Do NOT send all test emails using the "To" or "CC" fields**—this is a major spam flag, as mass-sending to multiple recipients with different domains at once can be perceived as suspicious behavior.
* If you use an ESP (Email Service Provider), send the test email **exactly as you would in a real campaign** to mimic real-world sending conditions.
* If your email contains **dynamic content**, make sure each test email reflects how your actual audience would receive it.

## What Steps Can I Take to Fix Spam Placement?

There’s no single fix—each case is different, and hundreds of factors influence spam placement. However, some foundational best practices include:

### The Obvious Steps (That Everyone Mentions)

1. Only send to opt-in users – Sending to purchased or scraped lists is a surefire way to get flagged.
2. Send only to engaged users – Many recommend focusing on 30-day openers and clickers, but this varies based on email frequency. If you send a monthly newsletter, filtering by 30-day engagement isn’t always practical.
3. Remove unsubscribed users and feedback loop (FBL) complaints – ISPs track user complaints; repeated issues hurt your sender reputation.
4. Ensure proper authentication – Set up [SPF](https://campaigncleaner.com/email-deliverability-guide.html#what-is-spf-), [DKIM](https://campaigncleaner.com/email-deliverability-guide.html#what-is-dkim-), and [DMARC](https://campaigncleaner.com/email-deliverability-guide.html#what-is-dmarc-) records to verify your sending domain and prevent spoofing.
5. [Follow ISP Postmaster Guidelines](https://campaigncleaner.com/email-deliverability-guide.html#postmaster-guidelines) – Each ISP has its own rules for managing deliverability. See our guide for direct links to major ISPs' best practices.

## The Less Talked About but Critical Fixes

* **Monitor your sending patterns** – Sudden spikes in email volume can trigger spam filters.
* **Improve email engagement** – Encouraging recipients to reply or move your emails to the inbox can help train filters in your favor.
* **Reduce spam-triggering content** – Avoid [excessive capitalization](https://docs.campaigncleaner.com/features-settings/punctuation-caps-h-tags), misleading subject lines, and suspicious links.
* **Warm up new domains and IPs** – If you recently switched to a new sender domain or IP, gradually increase your sending volume to build a positive reputation.

## ISP-Specific Scoring & Reputation Metrics

Each major ISP uses different metrics to determine email placement. Here’s what they track:

### Gmail Postmaster Tools

* **Domain Reputation** – Ranges from Bad, Low, Medium, and High.
* **IP Reputation** – Assesses the sending IP’s trustworthiness.
* **Spam Rate** – Measures complaint levels based on recipient reports.

### Microsoft (Hotmail/Outlook) SNDS

* **BCL (Bulk Complaint Level)** – A score from 0 to 9 indicating how much a sender resembles a bulk sender. Higher values (above 4) indicate higher likelihood of spam placement.
* **SCL (Spam Confidence Level)** – Ranges from -1 to 9, with higher numbers meaning greater suspicion of spam. Emails with an SCL of 5 or higher are usually sent to spam.
* **SNDS (Smart Network Data Services)** – Provides IP reputation insights, showing complaint rates and spam filtering behavior.

### Apple Mail (iCloud Mail)

* **ICL (Inbox Confidence Level)** – A proprietary Apple Mail score determining the likelihood of an email being placed in the inbox vs. spam. This is largely based on user engagement, sender authentication, and past delivery history.

### Yahoo Postmaster Tools

* **CFL (Complaint Feedback Loop)** – Allows senders to see if users are marking emails as spam.
* **Deliverability Reports** – Provides insights on how Yahoo processes your emails.

## Why These Metrics Matter

Your email placement is largely determined by:

* **IP Reputation** – The sending IP’s history, complaints, and blacklist status.
* **Domain Reputation** – How your domain is perceived over time.
* **Engagement-Based Filtering** – How recipients interact with your emails.
* **Authentication & Compliance** – [SPF](https://campaigncleaner.com/email-deliverability-guide.html#what-is-spf-), [DKIM](https://campaigncleaner.com/email-deliverability-guide.html#what-is-dkim-), [DMARC](https://campaigncleaner.com/email-deliverability-guide.html#what-is-dmarc-), and ISP-specific guidelines.

## Why Do Emails Land in Spam?

* **Poor IP Reputation** – If your IP has a history of spam, ISPs will filter your emails.
* **Weak Domain Reputation** – Domains sending low-quality or unengaged emails will suffer.
* **Blacklist Listings** – If your IP or domain is blacklisted, your emails will struggle to reach the inbox.
* **Engagement-Based Filtering** – Low open rates and high spam complaints hurt deliverability.
* **Spammy Content** – Misleading subject lines, excessive links, or poor formatting can trigger filters.

## Content Optimization & Inbox Placement

Even with a clean IP and domain reputation, content plays a huge role in whether your emails reach the inbox.

* Avoid spam-triggering words and misleading subject lines.
* Keep a balanced text-to-image ratio—too many images or all-text emails can be flagged.
* Encourage recipient interaction—more engagement leads to better placement.

## How Campaign Cleaner Helps

Campaign Cleaner analyzes and optimizes your email content for better deliverability and engagement—helping you stay out of the spam folder and in the inbox.

<video />


# MX Vision
Source: https://docs.campaigncleaner.com/other-tools/mx-vision

Understand Your Audience Like Never Before.

# What is MX Vision?

MX Vision helps you uncover the makeup of your email list by analyzing the MX (Mail Exchange) records of your subscribers. It provides a breakdown of mailbox providers—such as Gmail, Outlook, Yahoo, and others—empowering you to tailor your email campaigns for better deliverability and engagement.

# Why Categorize by Mailbox Provider?

## Insights That Drive Results

Knowing your subscribers’ mailbox providers enables you to:

* **Optimize Deliverability**: Understand where your emails are landing and take steps to ensure inbox placement.
* **Customize Content**: Adapt your messaging based on the preferences and limitations of different providers.
* **Improve Campaign Metrics**: Gain insights into engagement trends across providers to maximize opens and clicks.

### Avoid Common Pitfalls

Different mailbox providers handle emails uniquely, especially when it comes to:

* Spam filters
* Rendering differences
* Throttling policies

With MX Vision, you’ll have the data to address these challenges head-on.

## Key Features of MX Vision

1. **Detailed Provider Breakdown**\
   Easily identify the percentage of your list hosted on major providers like Gmail, Outlook, and Yahoo.

2. **Actionable Insights**\
   Get recommendations to improve deliverability and engagement, tailored to your email list composition.

3. **Intuitive Dashboard**\
   Visualize data through user-friendly graphs and tables to make informed decisions quickly.

4. **Exportable Reports**\
   Share findings with your team or stakeholders with easy-to-export PDF reports.

## How Does MX Vision Work?

### Step 1: Upload Your List

Upload your email list to start the analysis.

### Step 2: MX Record Analysis

MX Vision identifies the mail exchange servers for each email address and categorizes them by provider.

### Step 3: Review Insights

View a detailed breakdown of your email list composition.

### Step 4: Take Action

Use the data to fine-tune your email campaigns for maximum impact.

## Benefits of Using MX Vision

### Boost Deliverability

Identify potential issues with specific providers and adjust your sending practices accordingly.

### Enhance Engagement

Customize your campaigns for different providers, ensuring better engagement across your audience.

### Optimize Resources

Focus your efforts on the mailbox providers that matter most to your campaigns.

## Video Overview

Learn how MX Vision can transform your email campaigns:

<video />

MX Vision equips you with the insights you need to take your email marketing to the next level. Analyze, adapt, and succeed with data-driven decisions powered by MX Vision.


# Quirks
Source: https://docs.campaigncleaner.com/references/campaign-cleaner-quirks

Discover key things to be aware of when using Campaign Cleaner. Learn about quirks and tips to optimize your email campaigns for the best results.

Sometimes, you may notice something that doesn't seem quite right. If this occurs, please reach out to us through the contact page. We utilize a variety of technologies to simplify your campaign optimization efforts without requiring extensive HTML knowledge. However, we recognize that no solution perfectly suits every scenario.

Here's a list of quirks, that we will update when we find them also, that we are not going adjust at this time.

<AccordionGroup>
  <Accordion title="My Images or Links Appear Broken, When They Are Not">
    <b>Possible Cause:</b> We replace unicode characters with their ASCII equivalent, If you're using unicode chacaracters in your file or image names, they can and most likely will appear to be broken. We thought about not changing images and links, but decided against it at this time.

    <b>Solution:</b> Rename your images without using unicode characters. You probably didn't know you were to begin with or perhaps you are using the MacOS screenshot software which will put in a u202f unicode character by default in the file name between the time and AM/PM. Changing the system time to 24 hours will fix this. You can also turn off the date function in the screenshot with the following command in Terminal “defaults write com.apple.screencapture "include-date" 0”

    <b>Reason:</b> Please Read [Non-ASCII Character Replacement](/features-settings/non-ascii-character-replacement). There are some replacements that we do without this setting turned on.

    <b>Best Practice:</b> Stick to ASCII for Maximum Compatibility, if you want to ensure the broadest compatibility, especially across different systems and in network environments, sticking to ASCII characters in filenames is safest.
  </Accordion>

  <Accordion title="My Images Appear Broken, When They Are Not">
    <b>Possible Cause:</b> Most mondern browsers will display the HTTPS version of images (If one exists), even if you specificy the HTTP version. Chrome calls this the HTTPS-First Mode, which is enable by default. If the HTTPS version of your image is different or if the SSL is expired, the images will show as broken.

    <b>Solution:</b> Fix the SSL Certificate for the HTTPS version of your images, or remove the HTTPS path for your images.

    <b>Reason:</b> Please Read [Chromium Blog - Towards HTTPS by default](https://blog.chromium.org/2023/08/towards-https-by-default.html).

    <b>Best Practice:</b> Also use HTTPS Images and links in email.
  </Accordion>
</AccordionGroup>


# Embedded Images
Source: https://docs.campaigncleaner.com/references/embedded-images

Embedded images in emails can also be included as attachments rather than being directly encoded in the HTML body.

# Here's how it works:

## Attaching the Image

When you attach an image to an email, it becomes a separate part of the MIME (Multipurpose Internet Mail Extensions) structure of the email. Each part of a MIME email has its own headers, such as Content-Type, Content-Disposition, and Content-ID.

For example, an attached image might have headers like these:

```
Content-Type: image/jpeg; name="image.jpg"
Content-Disposition: attachment; filename="image.jpg"
Content-ID: <image123>
Content-Transfer-Encoding: base64
```

## Referencing the Image in HTML

In the HTML body of the email, you can reference the attached image using the img tag with a src attribute that uses the cid: scheme followed by the Content-ID of the image:

```
<img src="cid:image123" alt="Embedded Image">
```

In this example, image123 is the Content-ID assigned to the image in the MIME part headers. When the email is viewed, the email client will display the attached image in place of the img tag.

## Disadvantages

**Email Size:** Attaching images can increase the overall size of the email, which might affect loading times and bandwidth usage for recipients.

**Spam Filters:** Emails with attachments are sometimes more likely to be flagged by spam filters, especially if the attachments are large.


# HTTP Response Status Codes
Source: https://docs.campaigncleaner.com/references/https-status-codes

HTTP response status codes indicate whether a specific HTTP request has been successfully completed.

HTTP response status codes indicate whether a specific HTTP request has been successfully completed.
Responses are grouped in five classes:

1. Informational responses (`100` – `199`)
2. Successful responses (`200` – `299`)
3. Redirection messages (`300` – `399`)
4. Client error responses (`400` – `499`)
5. Server error responses (`500` – `599`)
6. Unofficial error responses (various)
7. Campaign Cleaner responses (`0` – `99`)

The status codes listed below are defined by [RFC 9110](https://httpwg.org/specs/rfc9110.html#overview.of.status.codes).

<Note> If you receive a response that is not in list below, it is a non-standard response, possibly custom to the server's software.</Note>

## Information Responses

**100 Continue**

* This interim response indicates that the client should continue the request or ignore the response if the request is already finished.

**101 Switching Protocols**

* This code is sent in response to an request header from the client and indicates the protocol the server is switching to.

**102 Processing**

* This code indicates that the server has received and is processing the request, but no response is available yet.

**103 Early Hints**

* This status code is primarily intended to be used with the HTTPHeader("Link") header, letting the user agent start preloading resources while the server prepares a response or preconnect to an origin from which the page will need resources.

## Successful responses

**200 OK**

* The request succeeded. The result meaning of "success" depends on the HTTP method:

  * `GET`: The resource has been fetched and transmitted in the message body.
  * `HEAD`: The representation headers are included in the response without any message body.
  * `PUT` or `POST`: The resource describing the result of the action is transmitted in the message body.
  * `TRACE`: The message body contains the request message as received by the server.

**201 Created**

* The request succeeded, and a new resource was created as a result. This is typically the response sent after `POST` requests, or some `PUT` requests.

**202 Accepted**

* The request has been received but not yet acted upon.  It is noncommittal, since there is no way in HTTP to later send an asynchronous response indicating the outcome of the request. It is intended for cases where another process or server handles the request, or for batch processing.

**203 Non-Authoritative Information**

* This response code means the returned metadata is not exactly the same as is available from the origin server, but is collected from a local or a third-party copy. This is mostly used for mirrors or backups of another resource. Except for that specific case, the `200 OK` response is preferred to this status.

**204 No Content**

* There is no content to send for this request, but the headers may be useful. The user agent may update its cached headers for this resource with the new ones.

**205 Reset Content**

* Tells the user agent to reset the document which sent this request.

**206 Partial Content**

* This response code is used when the HTTPHeader("Range\*\* header is sent from the client to request only part of a resource.

**207 Multi-Status**

* Conveys information about multiple resources, for situations where multiple status codes might be appropriate.

**208 Already Reported**

* Used inside a `<dav:propstat>` response element to avoid repeatedly enumerating the internal members of multiple bindings to the same collection.

**226 IM Used** [HTTP Delta encoding](https://datatracker.ietf.org/doc/html/rfc3229)

* The server has fulfilled a `GET` request for the resource, and the response is a representation of the result of one or more instance-manipulations applied to the current instance.

## Redirection messages

**300 Multiple Choices**

* The request has more than one possible response. The user agent or user should choose one of them. (There is no standardized way of choosing one of the responses, but HTML links to the possibilities are recommended so the user can pick.)

**301 Moved Permanently**

* The URL of the requested resource has been changed permanently. The new URL is given in the response.

**302 Found**

* This response code means that the URI of requested resource has been changed *temporarily*.  Further changes in the URI might be made in the future. Therefore, this same URI should be used by the client in future requests.

**303 See Other**

* The server sent this response to direct the client to get the requested resource at another URI with a GET request.

**304 Not Modified**

* This is used for caching purposes. It tells the client that the response has not been modified, so the client can continue to use the same cached version of the response.

**305 Use Proxy**

* Defined in a previous version of the HTTP specification to indicate that a requested response must be accessed by a proxy. It has been deprecated due to security concerns regarding in-band configuration of a proxy.

**306 unused**

* This response code is no longer used; it is just reserved. It was used in a previous version of the HTTP/1.1 specification.

**307 Temporary Redirect**

* The server sends this response to direct the client to get the requested resource at another URI with the same method that was used in the prior request.  This has the same semantics as the `302 Found` HTTP response code, with the exception that the user agent *must not* change the HTTP method used: if a `POST` was used in the first request, a `POST` must be used in the second request.

**308 Permanent Redirect**

* This means that the resource is now permanently located at another URI, specified by the `Location:` HTTP Response header.  This has the same semantics as the `301 Moved Permanently` HTTP response code, with the exception that the user agent *must not* change the HTTP method used: if a `POST` was used in the first request, a `POST` must be used in the second request.

## Client error responses

**400 Bad Request**

* The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

**401 Unauthorized**

* Although the HTTP standard specifies "unauthorized", semantically this response means "unauthenticated".  That is, the client must authenticate itself to get the requested response.

**402 Payment Required**

* This response code is reserved for future use. The initial aim for creating this code was using it for digital payment systems, however this status code is used very rarely and no standard convention exists.

**403 Forbidden**

* The client does not have access rights to the content; that is, it is unauthorized, so the server is refusing to give the requested resource.  Unlike `401 Unauthorized`, the client's identity is known to the server.

**404 Not Found**

* The server cannot find the requested resource. In the browser, this means the URL is not recognized. In an API, this can also mean that the endpoint is valid but the resource itself does not exist. Servers may also send this response instead of `403 Forbidden` to hide the existence of a resource from an unauthorized client. This response code is probably the most well known due to its frequent occurrence on the web.

**405 Method Not Allowed**

* The request method is known by the server but is not supported by the target resource. For example, an API may not allow calling `DELETE` to remove a resource.

**406 Not Acceptable**

* This response is sent when the web server, after performing server-driven content negotiation, doesn't find any content that conforms to the criteria given by the user agent.

**407 Proxy Authentication Required**

* This is similar to `401 Unauthorized` but authentication is needed to be done by a proxy.

**408 Request Timeout**

* This response is sent on an idle connection by some servers, even without any previous request by the client. It means that the server would like to shut down this unused connection.  This response is used much more since some browsers, like Chrome, Firefox 27+, or IE9, use HTTP pre-connection mechanisms to speed up surfing. Also note that some servers merely shut down the connection without sending this message.

**409 Conflict**

* This response is sent when a request conflicts with the current state of the server.

**410 Gone**

* This response is sent when the requested content has been permanently deleted from server, with no forwarding address. Clients are expected to remove their caches and links to the resource. The HTTP specification intends this status code to be used for "limited-time, promotional services". APIs should not feel compelled to indicate resources that have been deleted with this status code.

**411 Length Required**

* Server rejected the request because the `Content-Length` header field is not defined and the server requires it.

**412 Precondition Failed**

* The client has indicated preconditions in its headers which the server does not meet.

**413 Payload Too Large**

* Request entity is larger than limits defined by server. The server might close the connection or return an `Retry-After` header field.

**414 URI Too Long**

* The URI requested by the client is longer than the server is willing to interpret.

**415 Unsupported Media Type**

* The media format of the requested data is not supported by the server, so the server is rejecting the request.

**416 Range Not Satisfiable**

* The range specified by the `Range` header field in the request cannot be fulfilled. It's possible that the range is outside the size of the target URI's data.

**417 Expectation Failed**

* This response code means the expectation indicated by the `Expect` request header field cannot be met by the server.

**418 I'm a teapot**

* The server refuses the attempt to brew coffee with a teapot.

**421 Misdirected Request**

* The request was directed at a server that is not able to produce a response.
  This can be sent by a server that is not configured to produce responses for the combination of scheme and authority that are included in the request URI.

**422 Unprocessable Content**

* The request was well-formed but was unable to be followed due to semantic errors.

**423 Locked**

* The resource that is being accessed is locked.

**424 Failed Dependency**

* The request failed due to failure of a previous request.

**425 Too Early**

* Indicates that the server is unwilling to risk processing a request that might be replayed.

**426 Upgrade Required**

* The server refuses to perform the request using the current protocol but might be willing to do so after the client upgrades to a different protocol.
  The server sends an HTTPHeader("Upgrade\*\* header in a 426 response to indicate the required protocol(s).

**428 Precondition Required**

* The origin server requires the request to be conditional.
  This response is intended to prevent the 'lost update' problem, where a client `GET`s a resource's state, modifies it and `PUT` it back to the server, when meanwhile a third party has modified the state on the server, leading to a conflict.

**429 Too Many Requests**

* The user has sent too many requests in a given amount of time ("rate limiting").

**431 Request Header Fields Too Large**

* The server is unwilling to process the request because its header fields are too large.
  The request may be resubmitted after reducing the size of the request header fields.

**451 Unavailable For Legal Reasons**

* The user agent requested a resource that cannot legally be provided, such as a web page censored by a government.

## Server error responses

**500 Internal Server Error**

* The server has encountered a situation it does not know how to handle.

**501 Not Implemented**

* The request method is not supported by the server and cannot be handled. The only methods that servers are required to support (and therefore that must not return this code) are `GET` and `HEAD`.

**502 Bad Gateway**

* This error response means that the server, while working as a gateway to get a response needed to handle the request, got an invalid response.

**503 Service Unavailable**

* The server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded. Note that together with this response, a user-friendly page explaining the problem should be sent. This response should be used for temporary conditions and the `Retry-After` HTTP header should, if possible, contain the estimated time before the recovery of the service. The webmaster must also take care about the caching-related headers that are sent along with this response, as these temporary condition responses should usually not be cached.

**504 Gateway Timeout**

* This error response is given when the server is acting as a gateway and cannot get a response in time.

**505 HTTP Version Not Supported**

* The HTTP version used in the request is not supported by the server.

**506 Variant Also Negotiates**

* The server has an internal configuration errorthe chosen variant resource is configured to engage in transparent content negotiation itself, and is therefore not a proper end point in the negotiation process.

**507 Insufficient Storage**

* The method could not be performed on the resource because the server is unable to store the representation needed to successfully complete the request.

**508 Loop Detected**

* The server detected an infinite loop while processing the request.

**510 Not Extended**

* Further extensions to the request are required for the server to fulfill it.

**511 Network Authentication Required**

* Indicates that the client needs to authenticate to gain network access.

## Unofficial error responses

**999 Rate Limited**

* This is an unofficial HTTP status response commonly used by websites to limit the number of connections within a specific time frame in order to protect the server from bots. It's often encountered on websites like LinkedIn. If you see this in your broken link report, the link is likely not broken. Instead, it means we're being rate-limited by the website. If the link works when you click it, it should also work for recipients who click it in your email or on your website.

## Campaign Cleaner Responses

| **Status Code** | **Description**                                                                                                                                                    |
| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| 95              | Replacement Code, Merge Tags Links                                                                                                                                 |
| 96              | Anchor Links starts with #                                                                                                                                         |
| 97              | Telephone Links start with tel:                                                                                                                                    |
| 98              | Email links, starts with mailto:                                                                                                                                   |
| 99              | Invalid URL - The provided website address is not valid. It may be a partial address, missing the necessary protocols (http or https), or has an incorrect format. |

<Info>This information is in part provided by MDN Web Docs</Info>