The fastest way to unblock an email in Outlook

To unblock an email address in Outlook, open any message from that sender, select the message, then go to the Home tab and click Junk (the dropdown arrow next to it). Choose Junk E-mail Options, then select the Safe Senders tab. Click Add, type the email address, and click OK. From that point forward, messages from that address will arrive in your inbox instead of the junk folder.

If you do not have a message from the sender yet, you can add them directly to your Safe Senders list without waiting. Go to Home > Junk > Junk E-mail Options > Safe Senders > Add, then type the address and confirm.

The steps are the same whether you use Outlook on your desktop, Outlook on the web, or Outlook on your phone — though the button locations shift slightly on mobile. Messages already in your junk folder will stay there; unblocking only affects new mail going forward.

Key Takeaways

  • Add an email address to your Safe Senders list through the Junk E-mail Options menu to stop messages from that sender going to junk.
  • You can unblock an address even if you have not received a message from them yet by adding them manually to Safe Senders.
  • Unblocking affects only new messages; old messages already in your junk folder will not move to your inbox automatically.
  • If a sender keeps landing in junk after you unblock them, the problem may be a rule you created yourself, which you will need to delete separately.

Why Outlook sends emails to junk in the first place

Outlook uses two separate systems to decide what goes to junk. The first is an automatic filter that watches for common spam patterns — suspicious links, certain words, sender reputation. The second is rules you may have created yourself without realizing it. If you once clicked "Junk" on a message from someone, Outlook may have added them to a blocked list.

Adding someone to Safe Senders overrides the automatic filter, but it does not override a rule you created by hand. If a sender keeps landing in junk even after you unblock them, you likely blocked them deliberately at some point and need to remove that rule separately.

How to find and remove a rule that is blocking a sender

If unblocking through Safe Senders does not work, check whether you created a rule that sends that sender's mail to junk. Go to Home > Rules > Manage Rules & Alerts. Look through the list for any rule that mentions the sender's address or domain. If you find one, select it and click Delete.

Rules often have names like "Move [sender name] to junk" or "Block [domain]". If you see one that matches, that is what is overriding your Safe Senders list. Delete it, then the sender should reach your inbox normally.

After you delete the rule, new messages from that sender will follow the normal junk filter rules. If they still land in junk, go back and add them to Safe Senders as described above.

Unblocking a domain instead of a single address

If you want to unblock all messages from a company or organization — for example, all mail from anyone at company.com — you can add the domain instead of a single address. In the Safe Senders list, type the domain with an @ symbol: @company.com. Outlook will then accept mail from any address at that domain.

This is useful when you know a company's email system is being filtered but you do not know which specific address will contact you. It is also faster than unblocking each person one at a time if multiple people from the same organization are reaching out.

What to do if you cannot find the Junk menu

On Outlook on the web (the version you access through a browser), the menu is slightly different. Click the gear icon in the top right, then View all Outlook settings > Mail > Junk e-mail. You will see a Safe Senders and Domains section where you can type the address directly and click the plus sign to add it.

On Outlook mobile (iPhone or Android), open a message from the sender, tap the three dots, and select Add to Safe Senders. The mobile version does not let you add an address without a message from them first, so if you need to unblock someone before they contact you, use the desktop or web version instead.

Checking whether an address is already blocked

You can see your full list of blocked senders and domains in the Junk E-mail Options window. Go to Home > Junk > Junk E-mail Options and look at the Blocked Senders tab. If the address you are trying to unblock appears there, select it and click Remove.

The Blocked Senders tab shows only addresses you blocked deliberately — not addresses that the automatic filter caught. If the sender is not on this list but still landing in junk, the automatic filter is the culprit, and adding them to Safe Senders will fix it.

Frequently Asked Questions

Will unblocking someone move their old messages out of junk?

No. Unblocking only affects new messages going forward. If you want to see old messages from that sender, you will need to go to your junk folder, find them, and move them to your inbox by hand. Select the message, right-click, and choose Move > Inbox.

Can I unblock an email address on my phone?

On Outlook mobile, you can add someone to Safe Senders only if you have received a message from them. Open the message, tap the three dots, and select Add to Safe Senders. If you need to unblock someone before they contact you, use Outlook on your desktop or web browser instead.

What is the difference between Safe Senders and Safe Recipients?

Safe Senders is for people who email you. Safe Recipients is for mailing lists and groups you send mail to — it stops Outlook from marking your own outgoing messages as junk when you reply. For unblocking incoming mail, use Safe Senders only.

If I unblock someone, will they see that I unblocked them?

No. Unblocking is a setting on your account only. The sender has no way to know whether you blocked them or unblocked them. It does not send them a notification or change anything on their end.

Why does a sender keep going to junk even after I unblocked them?

The most common reason is a rule you created yourself that is overriding your Safe Senders list. Check Home > Rules > Manage Rules & Alerts for any rule that mentions the sender, and delete it. If no rule exists, the automatic filter may be very confident the mail is spam — try adding the sender's full domain (@company.com) to Safe Senders instead of just their address.