Microsoft Teams: Guest invitation emails will be sent from the inviter’s email address

Microsoft Teams guest invitation emails will soon be sent from the inviter’s email address instead of a no-reply address, improving clarity and enabling direct replies. This change, rolling out worldwide from late June to late July 2026, requires no admin action but users should be informed.

[What and Why]

We are updating how Microsoft Teams sends guest invitation emails to improve clarity and trust in cross-tenant collaboration. Instead of being sent from a Microsoft no-reply address, guest invitation emails will soon appear to come directly from the inviter’s email address.

This change helps recipients easily recognize who invited them, enables direct replies, and reduces confusion, improving the overall collaboration experience.

[Rollout Schedule]

General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out in late June 2026 and expect to complete by late July 2026.

[Impact on Your Organization]

Who is affected

• All Microsoft Teams users who invite external guests
• External recipients of guest invitations
• Microsoft 365 administrators managing guest access and collaboration policies

Platforms/Services

• Microsoft Teams
• Exchange Online (email delivery behavior)

What will happen

• Guest invitation emails will appear to come from the inviting user’s email address instead of a Microsoft no‑reply address: 

  

• Invitees can reply directly to the inviter via email or can redeem the invitation and use Teams.
• There are no changes to guest access permissions or policies.
• No admin configuration required.
• The feature will be enabled by default across all tenants.

[Action Required / Recommendations]

No action is required.

However, we recommend that you:

• Inform users that invitation emails will now appear to come from their own email address.
• Prepare helpdesk/support teams for potential questions about unexpected replies from external guests.
• Review your guest access policies to ensure they align with your organization’s collaboration practices.
• Update internal documentation or training materials if they reference invitation email behavior.

Learn more: 

• Add guests to a team in Microsoft Teams | Microsoft Support
• Guest experience in Teams | Microsoft Teams | Microsoft Learn

[Compliance considerations]

Question	Answer
Does the change provide a new way of communicating between users, tenants, or subscriptions?	Yes. External guests can now directly reply to the inviter via email, enabling a new communication path tied to the invitation workflow.