What does blocking a sender do?

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

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