Azure APIM no longer sends notification emails

Vadim Berman 45 Reputation points
2026-06-26T12:33:32.83+00:00

Exactly like this issue:

  1. Started happening about a week ago.
  2. No changes made.
  3. The portal has been in operation for years.

Kindly do not offer to save the email again, we tried both ours and the default email, and again, it worked fine, and we're obviously not alone.

Azure API Management
Azure API Management

An Azure service that provides a hybrid, multi-cloud management platform for APIs.

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  1. Sina Salam 30,486 Reputation points Volunteer Moderator
    2026-06-27T09:35:55.7166667+00:00

    Hello Vadim Berman,

    Welcome to the Microsoft Q&A and thank you for posting your questions here.

    I understand that your Azure API Management managed developer portal has stopped sending notification emails, even though it had worked for years and no configuration changes were made.

    The issue should be treated as a Microsoft-managed APIM notification email pipeline failure or regression until proven otherwise, because both the custom originating email and the default APIM sender were already tested, and the problem is not resolved by simply re-saving the email settings.

    The resolution path is to:

    • Validate the APIM notification recipients, templates, administrator email, and originating email once.
    • Confirm the Azure subscription type is not affected by APIM email/template limitations.
    • Reproduce the failed notification with exact UTC timestamps.
    • Check Azure Service Health and Resource Health for APIM-related impact.
    • Open an Azure Support request and ask Microsoft to investigate APIM backend notification telemetry, mail queue/send attempts, suppression, bounce, or regional service regression.
    • Use manual communication or a self-hosted developer portal with your own mail provider only as a business-continuity workaround.

    After validating configuration and reproducing the failure, the issue cannot be fully proven or fixed from customer-side logs because APIM built-in notification delivery is Microsoft-managed. Azure Monitor and Activity Log can help confirm APIM resource activity, but they do not expose the internal APIM email delivery pipeline.

    Use the below resource links for more reading and steps:

    I hope this is helpful! Do not hesitate to let me know if you have any other questions, steps or clarifications.

    Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful.

    Was this answer helpful?

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