The quickest way to unblock an email address

To unblock an email address in Outlook, open the message from that sender, select the three dots (more options) at the top right, and choose Never Block Sender. That's the fastest route on the web version. On the desktop app for Windows or Mac, right-click the sender's name in the message and select Add to Safe Senders List. Either action removes the block when ready, and future messages from that address will land in your inbox instead of the Junk folder.

If you don't have a message from the sender yet, you can unblock them through your Junk Email settings instead. This method works the same way across all Outlook versions and takes about two minutes.

Key Takeaways

  • The fastest unblock is opening any message from that sender and clicking Never Block Sender (web) or Add to Safe Senders List (desktop).
  • If you have no recent message from the sender, go to Settings > Mail > Junk Email and add them to your Safe Senders list manually.
  • Unblocking takes effect when ready, and the sender's future messages will arrive in your inbox, not Junk.
  • Blocked senders are stored in your Blocked Senders list, which you can view and edit anytime in Junk Email settings.

Unblocking from a message in Outlook on the web

If you have received a message from the sender (even if it landed in Junk), this is the simplest path. Open the message, then look at the top right of the email where you see three horizontal dots. Click that menu and select Never Block Sender. Outlook will when ready move that message to your inbox and add the sender to your Safe Senders list.

The next time this sender emails you, the message will arrive in your inbox automatically. You won't see a notification that the unblock happened — it just works silently in the background.

Unblocking from a message in Outlook desktop (Windows or Mac)

Open the message from the blocked sender. Right-click directly on the sender's name or email address at the top of the message. A small menu will appear. Select Add to Safe Senders List. The sender is now unblocked, and their future messages will skip the Junk folder.

On some versions of Outlook for Windows, you may see the option labeled Never Block Sender instead. Either label means the same thing — the sender is being moved to your trusted list.

Unblocking without a recent message

If you don't have a message from the sender to open, you can unblock them through your settings. On Outlook on the web, click the gear icon in the top right, then select View all Outlook settings. Go to Mail > Junk Email. You'll see a section called Safe Senders and Domains. Type the email address you want to unblock into the text field and click the plus sign to add them.

On Outlook desktop for Windows, go to File > Options > Trust Center > Trust Center Settings > Safe Senders. Type the address and click Add. On Mac, go to Outlook > Preferences > Junk Email > Safe Senders and add the address there.

Finding your blocked senders list

You can see all the addresses you've blocked and unblock them from one place. On Outlook on the web, go to Settings > Mail > Junk Email and scroll to Blocked Senders. This list shows every address you've blocked. Click the X next to any address to remove the block.

On Outlook desktop for Windows, go to File > Options > Trust Center > Trust Center Settings > Blocked Senders. On Mac, go to Outlook > Preferences > Junk Email > Blocked Senders. You can remove any address from this list by selecting it and clicking the minus sign or delete button.

What happens after you unblock

Once you unblock an address, that sender's messages will go to your inbox like any other email. Messages they sent while they were blocked stay in your Junk folder — unblocking doesn't move old messages. You can move them manually if you want to keep them, or leave them where they are.

If you change your mind and want to block the sender again, you can do that anytime using the same menus. Blocking and unblocking are reversible actions with no waiting period.

Frequently Asked Questions

Does unblocking a sender remove old messages from my Junk folder?

No. Unblocking only affects future messages. Messages that arrived while the sender was blocked stay in Junk. You can move them to your inbox manually if you want to keep them, or delete them.

What's the difference between blocking and unblocking versus marking as spam?

Blocking prevents all messages from an address from reaching your inbox. Marking a single message as spam trains Outlook's filter but doesn't block the sender completely. Unblocking reverses a block; marking as not spam reverses the spam training for that one message.

Can I unblock a domain instead of just one email address?

Yes. In your Safe Senders list, you can add an entire domain (like @company.com) instead of a single address. This unblocks everyone from that domain. Go to Junk Email settings and add the domain to your Safe Senders and Domains section.

Will unblocking someone let them see that I blocked them?

No. Blocking and unblocking are private actions on your account. The sender has no way to know you blocked them or that you've now unblocked them. They straightforward won't know their messages were going to Junk.