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Outlook Legacy for Mac Cannot Send or Receive Emails

Julia Lousie 0 Reputation points
2026-05-28T14:00:29.2766667+00:00

Hi Support Team,

I am experiencing an issue with Outlook Legacy for Mac. The application cannot send or receive emails properly.

Current issues:

  • Emails remain stuck in the Outbox
  • Inbox is not updating or syncing
  • Sometimes Outlook shows connection or synchronization errors

I have already restarted Outlook and my Mac, but the issue still persists.

Could you please assist in checking this issue and advise on the recommended solution?

Thank you.

Outlook | MacOS | Legacy Outlook for Mac | For business
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  1. Jayden-P 22,910 Reputation points Microsoft External Staff Moderator
    2026-05-28T14:35:02.36+00:00

    Please note that we're not Microsoft support, this is a user-to-user support forum. Moderators have no backend access and cannot directly intervene in Microsoft products. We provide only technical guidance and best-practice recommendations based on reported issues.

    Hi @Julia Lousie

    May I ask if you are using Exchange, IMAP or POP account? Can you please provide you Outlook Mac version? You can check this in Outlook > About Outlook.

    If you are using Exchange, please check in https://outlook.cloud.microsoft/ to see if you can send or receive emails there? If yes, that means the issue likely come from Outlook Mac. You can try:

    If you are using IMAP or POP, please provide your provider so I can find more details about port and server name.

    I look forward for your reply.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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