Ensure Your Emails Reach the Inbox, Not the Spam Folder.
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.
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:
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.
To get the most accurate results, send each seed address a separate email.
There’s no single fix—each case is different, and hundreds of factors influence spam placement. However, some foundational best practices include:
Each major ISP uses different metrics to determine email placement. Here’s what they track:
Your email placement is largely determined by:
Even with a clean IP and domain reputation, content plays a huge role in whether your emails reach the inbox.
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.
Ensure Your Emails Reach the Inbox, Not the Spam Folder.
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.
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:
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.
To get the most accurate results, send each seed address a separate email.
There’s no single fix—each case is different, and hundreds of factors influence spam placement. However, some foundational best practices include:
Each major ISP uses different metrics to determine email placement. Here’s what they track:
Your email placement is largely determined by:
Even with a clean IP and domain reputation, content plays a huge role in whether your emails reach the inbox.
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.