Gmail Settings → "Filters and Blocked Addresses" (or a new dedicated "Blocked" tab in Settings) Core Feature: "Undo Block" & Smart Unblock This feature allows you to remove an email address from your blocked list and optionally restore any emails that were sent while blocked.
Blocked Addresses Manager (One-Click Unblock)
Gmail Settings → "Filters and Blocked Addresses" (or a new dedicated "Blocked" tab in Settings) Core Feature: "Undo Block" & Smart Unblock This feature allows you to remove an email address from your blocked list and optionally restore any emails that were sent while blocked.
Blocked Addresses Manager (One-Click Unblock) unblock email gmail