What does blocking a sender do?

Blocking a sender in Outlook will send all future emails from the contact to the "Junk Email" folder.

The blocked person can still send you mail, but if anything from his or her email address makes it to your email account, it’s immediately moved to the Junk Email folder. Future messages from this sender will go to your Junk Email folder.

It’s a good idea to periodically review email messages identified as junk to make sure you’re not missing important messages. If you later decide you want to unblock a sender, use Junk Email Filters to change which messages you see.

How do I block a sender through the Outlook website?

1.  Select the email of the desired sender to block
2. At the top of the screen, select the Junk menu option. A dropdown menu will appear.
   
3. Select Block
   
4. Click OK
   
5. The sender is now blocked

How do I block a sender through the Outlook desktop application?

1.  Select the email of the desired sender to block
2. At the top of the screen, select the three-dot menu option. A drop-down menu will appear
   
3. Select Junk
   
4. Select Block Sender
   
5. Click OK
   
   
6. The sender is now blocked