Open Gmail
Click the gear icon
Select See all settings
Go to the Filters and Blocked Addresses tab
Find the blocked email address
Click Unblock
Confirm by clicking Unblock again
Check your inbox or spam folder for new emails from that sender
Open Gmail
Click the gear icon
Select See all settings
Go to the Filters and Blocked Addresses tab
Find the blocked email address
Click Unblock
Confirm by clicking Unblock again
Check your inbox or spam folder for new emails from that sender