{"id":15677,"date":"2026-03-31T07:01:29","date_gmt":"2026-03-30T22:01:29","guid":{"rendered":"https:\/\/m365jp.net\/?p=15677"},"modified":"2026-03-31T07:06:28","modified_gmt":"2026-03-30T22:06:28","slug":"mc1266025-update-on-custom-domain-guidance-for-teams-event-emails","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-31-mc1266025-update-on-custom-domain-guidance-for-teams-event-emails","title":{"rendered":"MC1266025 | Update on custom domain guidance for Teams Event emails"},"content":{"rendered":"
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MC1266025 | Update on custom domain guidance for Teams Event emails<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n
Classification<\/th>\nstayInformed<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/30\/2026 21:50:13<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/30\/2026 21:50:08<\/td>\n<\/tr>\n
End Time<\/th>\n04\/30\/2026 07:00:00<\/td>\n<\/tr>\n
Message Content<\/th>\n\n

We’re clarifying our guidance around custom domain configuration for Teams event emails, based on customer feedback and recent questions.<\/p>\n

In a previous Message Center post (MC1234575 and MC1176301), we communicated that configuring a custom domain was required to use custom HTML editing for event emails. Based on customer feedback, this is no longer mandatory effecting immediately.<\/p>\n

[When this will happen:]<\/p>\n

Effective immediately<\/p>\n

[How this affects your organization:]<\/p>\n

Premium feature of custom HTML editing for Teams Events (Webinar and Townhall) emails is no longer blocked if your tenant does not have a custom domain configured.<\/p>\n

You can continue creating and sending event emails even without configuring a custom domain.<\/p>\n

However, we still strongly recommend configuring a custom domain for the best and most consistent email experience, especially for events sent to external audiences.<\/p>\n

Why we still recommend configuring a custom domain<\/i><\/p>\n

Configuring a custom domain helps:<\/p>\n

    \n
  • Provide clearer and more recognizable sender identity for recipients associated to your tenant<\/li>\n
  • Improve email deliverability and reduce the likelihood of messages being flagged or questioned<\/li>\n
  • Create a more trusted experience for attendees receiving event invitations, updates, and reminders<\/li>\n<\/ul>\n

    If a custom domain is not configured, event-related emails will continue to leverage Microsoft provided domains, which can appear unfamiliar to recipients.<\/p>\n

    [What you can do to prepare:]<\/p>\n

      \n
    • Review your tenant\u2019s domain configuration in Microsoft 365<\/li>\n
    • Consider configuring and validating a custom domain if your organization regularly hosts external or large-scale Teams events<\/li>\n
    • Update internal guidance to reflect that custom domains are recommended, but no longer required, for advanced email customization<\/li>\n<\/ul>\n

      Documentation updates<\/i><\/p>\n

      We are updating our documentation and guidance to clearly reflect: <\/p>\n

        \n
      • The removal of the custom-domain requirement for custom HTML editing<\/li>\n
      • When and why configuring a custom domain is still recommended<\/li>\n<\/ul>\n

        You can learn more about managing email communications for Teams events on our learn page.<\/p>\n

        We\u2019re listening<\/i><\/p>\n

        This update reflects direct customer feedback. We\u2019ll continue monitoring support signals and feedback to further simplify and improve the event email experience.<\/p>\n

        <\/p>\n

        <\/p>\n<\/td>\n<\/tr>\n

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    [\u6e96\u5099\u306e\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068:]<\/p>\n

      \n
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