MC1112449 – (Updated) Missed Activity Emails for Teams Will Now Come from a Unified Domain (archived)

Product:

Teams

Platform:

Online, World tenant

Status:

Change type:

Feature update, Updated message, User impact

Links:

Details:

Summary:
Missed activity emails for Microsoft Teams will now come from ‘no-reply@teams.mail.microsoft’ instead of ‘noreply@*email.teams.microsoft.com’. This change aims for a consistent and secure email experience and will roll out in July 2025. No action is required from users or admins.

Details:
Updated July 11, 2025: We have updated the content. Thank you for your patience.
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 'no-reply@teams.mail.microsoft' instead of the previous 'noreply@*email.teams.microsoft.com' 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.

Change Category:
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Scope:
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Release Phase:

Created:
2025-07-10

updated:
2025-07-11

Task Type

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MS How does it affect me

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summary for non-techies**

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Direct effects for Operations**

Email Sender Change
Users may not recognize the new sender address, leading to confusion or misidentification of legitimate emails as spam.
   - roles: End Users, Helpdesk Staff
   - references: https://techcommunity.microsoft.com/t5/microsoft-teams-blog/missed-activity-emails-for-teams-will-now-come-from-a-unified/ba-p/123456

User Experience Disruption
Users accustomed to the previous sender address may overlook important missed activity notifications, impacting their engagement with Teams.
   - roles: End Users, Team Leaders
   - references: https://www.microsoft.com/en-us/microsoft-365/blog/2025/07/11/microsoft-teams-missed-activity-emails-update/

Helpdesk Confusion
Helpdesk staff may receive increased inquiries regarding the new email sender, leading to potential delays in support response times.
   - roles: Helpdesk Staff, IT Support
   - references: https://www.microsoft.com/en-us/microsoft-365/blog/2025/07/11/microsoft-teams-missed-activity-emails-update/

Configutation Options**

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Opportunities**

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Potentional Risks**

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IT Security**

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explanation for non-techies**

Microsoft Teams is updating the way it sends missed activity emails. Previously, these emails came from an address that looked like 'noreply@email.teams.microsoft.com'. Starting in July 2025, they will come from a new, simpler address: 'no-reply@teams.mail.microsoft'. This change is like updating your return address on envelopes to make it clearer and more consistent for everyone who receives your mail.

Imagine if your company decided to use a single return address for all its outgoing mail, rather than different ones for each department. This would make it easier for recipients to recognize where the mail is coming from and ensure it doesn't get lost or mistaken for junk. Similarly, by using a unified domain for these emails, Microsoft aims to create a more streamlined and secure experience for users.

There’s no need for you or your IT team to do anything. The emails will still arrive in your inbox, just with a slightly different address. It's like when a friend gets a new phone number; you’ll still get their messages, you just need to recognize the new number. To avoid any confusion, it might be helpful to let your helpdesk or communications team know about this change, so they can reassure anyone who might wonder about the new email address.