In Gmail: How To Unblock Someone

Delete or edit any rule associated with that person's email address.

Just like on desktop, unblocking doesn’t recover past emails. Go to your folder (tap the hamburger menu, scroll down, tap Spam), find emails from the unblocked person, and tap "Not spam" on each one. how to unblock someone in gmail

This is the best way to see a full list of everyone you have blocked: Delete or edit any rule associated with that