Yahoo’s automatic filters may be flagging the emails as spam.
If you have checked the "Blocked Addresses" list and the sender is not there, but their emails still are not appearing in your Inbox, check the following:
: Tap your Profile icon in the top-left corner of the app. Select Settings : Tap Settings (gear icon).
: Yahoo does not notify the sender when you unblock them.
To unblock a sender in Yahoo Mail , you must remove their address from your list within the account settings . Once unblocked, future emails from that sender will arrive in your inbox, though messages sent while they were blocked cannot be recovered. How to Unblock a Sender (Desktop Browser) For most users on a computer, follow these steps: Block and unblock email addresses in Yahoo Mail
: Locate the specific address and tap to remove or unblock it. Important Details to Note