Microsoft 365: Managing junk email from Microsoft 365 OWA (Outlook on the Web)

Email that meets the criteria defined in your Junk E-Mail settings in OWA will be automatically placed in your Junk E-Mail folder instead of in your Inbox. OIT does not define criteria for Junk E-Mail; you do. OWA provides tools that allow you to re-classify messages that have incorrectly been identified as “junk”, or messages that should be considered junk, but did not meet the criteria that was defined at the time the message was received.

When new mail is received, it is checked against your Junk E-Mail filters before it is placed in your Inbox. If it is considered to be unwanted and unsolicited email based on the criteria currently defined in your Junk E-Mail settings, it will be placed in the “Junk E-mail” folder in your folder list instead of your Inbox.

The messages opened from your Junk E-Mail folder will have most of the same functions available that can be used with emails in your Inbox.

 NOTE:  The information in this article includes screen shots and directions taken from the latest version of Office 365. Please be aware that Microsoft can and does update the OWA client frequently and the directions and screen shots below may no longer match what you see in Office 365. Please use the feedback option above to notify us of outdate screenshots/data.

To correct the incorrect classification of a message as Junk Mail:

  1. Go to the Junk E-mail folder and locate the message that should not be flagged as "junk mail". 
  2. Right click and select the option Mark as not junk



To change the rules that are used to determine what messages are flagged as “junk” from OWA:


  1. Verify you are using the Mail view (not Calendar, People, etc.).
  2. Select the gear icon near the upper, right-hand corner, then View all Outlook settings.
  3. Select Mail -> Junk email

  4. If you are having issues with inaccurate junk mail reporting, you may want to verify that the sender has been added to your Safe Senders and Recipients list. You can also manually add other addresses by entering the address and clicking the plus sign.

  5. Change the settings as desired.



For more information, see:


Article number: KB0015918

Valid to: January 8, 2025