Microsoft is unifying its interfaces. The "new" Outlook (and the web version) uses a modern, consistent layout.
If you are using the "New Outlook for Windows" desktop app (which looks like the web version), these same steps apply. how to unblock an email address in outlook
If you unblocked someone but their emails still go to Junk, try these fixes: Microsoft is unifying its interfaces
If you still have an old email from the blocked sender sitting in your Junk folder: or you accidentally blocked a client.
It happens to the best of us: you were tired of spam, so you blocked a sender. But now, you realize you actually need their emails—perhaps a colleague’s message went to junk, or you accidentally blocked a client.