If you accidentally blocked someone or need to receive emails from them again:
If signals degrade, Gmail retroactively blocks future emails from that sender. blocked emails gmail
Note: Future emails from this sender will go directly to your folder. If you accidentally blocked someone or need to
: Gmail automatically blocks executable files (like .exe , .bat , or .zip archives containing them) because they can spread malware. how to diagnose the issue
Failure at any stage = block or spam.
This report is structured for IT administrators, email marketers, and developers who need to understand why emails are blocked, how to diagnose the issue, and how to prevent it.