It is important to understand exactly what occurs technically when you unblock someone:
Note: If you cannot find an email from the sender on mobile, you must log into Gmail via a web browser on your computer to access the "Filters and Blocked Addresses" settings. unblock sender gmail
Gmail does not send a notification to the blocked sender. Their emails simply appear to send successfully, but they never reach your inbox. It is important to understand exactly what occurs
Sometimes, even after unblocking a sender, their emails might not show up. Here is how to fix common issues: even after unblocking a sender