I am cleaning my email inbox using Outlook on the web. I'd like to only list emails that contain meeting invites, so that I can see which ones to delete or archive. How can I only list emails that contain meeting invites from Outlook? I'm ok if it lists emails that contain meeting invites from other services.

Example of an email that contains a meeting invite (see red arrow):

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I couldn't see such a filtering option in the search box. Is the filtering option somewhere else, or via some keywords?

Searching for hasattachments:yes ext:ics or hasattachments:yes ext:ical doesn't return meeting invites from Outlook that don't contain attachments. It does return meeting invites from Google Calendar, as those contain an "explicit" .ICS attachments (explicit from OWA standpoint, i.e. they do show up as an attachment, unlike for invite from Outlook, that do not show up as an attachment in OWA).

  • Do all other appointments than Outlook-originated include ICS, but Outlook has something else that is common that can be searched on? Does owa support searching headers? Do Outlook invites have something specific in the header that's common?
    – Blindspots
    Nov 3, 2023 at 12:42
  • @BlindSpots Good questions. I agree these are good research directions. I don't know the answers. Nov 3, 2023 at 15:10
  • Poorly researched questions are not off topic. I believe the concensus is downvote, not close, for poorly researched questions.
    – Blindspots
    Nov 3, 2023 at 15:29
  • @BlindSpots I'd like to list emails that contain meeting invites from Outlook. I'm ok if it also lists emails that contain meeting invites from other services. Nov 3, 2023 at 19:53

1 Answer 1


Reddit user cyberzen7 pointed me to the proper search query:


It returns Outlook meeting invites as well as non-Outlook invites such as gCal (as long as they are recognized as meeting invites by Outlook, which is shown by a calendar icon before the email subject).


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