Follow the steps below for the (desktop browser) or the Gmail mobile app . Method 1: Unblock via Gmail Web Browser (Desktop) This is the most straightforward method.
If you've previously blocked someone in Gmail, their future emails will automatically go to your Spam folder. Unblocking them restores normal delivery to your Primary Inbox. how to unblock on gmail
Go to your Spam folder (found in the left sidebar menu under "More" if hidden). Follow the steps below for the (desktop browser)
At the top of the email (to the right of the reply arrow), click the three vertical dots (More options menu). how to unblock on gmail
Open the email from the blocked sender.
Select "Unblock [sender's name]" from the dropdown menu.