In Inbox Preview, the Spam Filter Check is a feature that allows you to see how your email performed on the most popular spam filters. It also allows you to get information about how spam tests were run, and why your email failed to pass certain spam filters.
There are two main functions in Spam Filter Check:
- Pass/Fail filters: This enables you to view if your test email passed or failed specific email client spam filters.
- Feedback Filters: This enables you to view more detailed information regarding specific spam filters, such as Barracuda or Spam Assassin. When available, a filter gives you information on why your test email did not pass.