Outlook.com emails consistently go to Gmail Spam

Ashish Kumar 0 Reputation points
2026-09-03T11:52:26.31+00:00

Hello Microsoft Support,

My Outlook.com email address [Moderator's note: PII removed]@outlook.com is consistently being delivered to Gmail Spam instead of the Inbox.

I tested sending emails to multiple Gmail accounts, and the messages went to Spam on all of them. Gmail displays the message: “This message is similar to messages that were identified as spam in the past.”

I checked the email authentication, and SPF, DKIM and DMARC all PASS. The messages are legitimate personal/business communication and do not contain suspicious links or attachments.

I also tested a simple plain-text email and it still went to Gmail Spam.

Please check whether there is an issue with my Outlook.com sender reputation or Microsoft’s outbound mail system that could be causing Gmail to classify my legitimate emails as spam.

Thank you.

Outlook | Web | Outlook.com | Email
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  1. Hendrix-V 18,515 Reputation points Microsoft External Staff Moderator
    2026-09-04T04:09:05.0833333+00:00

    Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.

    Hi Ashish Kumar,

    Thank you for providing those details. Since you've already confirmed that SPF, DKIM, and DMARC are passing and that the behavior occurs across multiple Gmail accounts, this points more toward how Gmail is assessing the sender's reputation rather than a configuration issue with email authentication.

    Because Gmail's spam filtering is managed on Google's side, Microsoft does not control how individual messages are classified after delivery. For more information, you can try Get help with Outlook.com

    I understand how frustrating this can be when legitimate emails are not reaching the Inbox as expected. You can also reach out to Microsoft support for further assistance.

    Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas.

    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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