Missed Activity Emails for Teams Will Now Come from a Unified Domain

Missed activity emails for Microsoft Teams will now come from the domain teams.mail.microsoft instead of teams.email.microsoft. This change will roll out in July 2025 with no impact on tenant configuration or admin settings. No action is required, but informing helpdesk or communications teams is recommended. To support a more consistent and secure email experience across Microsoft 365, we are transitioning to a unified domain for all product-generated emails. As part of this change, missed activity emails for Microsoft Teams will now be sent from teams.mail.microsoft instead of the previous teams.email.microsoft domain. When this will happen: Public Preview: Rolling out early July 2025, expected to complete by early July 2025. Targeted Release: Rolling out early July 2025, expected to complete by early July 2025. General Availability: Rolling out mid-July 2025, expected to complete by late July 2025. How this will affect your organization: There is no impact to tenant configuration or admin settings. End users will simply see a new sender address for missed activity emails from Teams. No action is required from users or admins. What you can do to prepare: No preparation is needed. However, you may wish to inform your helpdesk or communications teams of the sender address change to avoid confusion or misidentification of legitimate messages. Message ID: MC1112449

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