Outlook: Emails marked with External to be supported as Rules conditions

Summary

The External tag on an email, set by the ExternalInOutlook feature, will now be usable as a condition in Outlook Inbox Rules. This change also makes available the ability to create or modify these Rules on the new Outlook for Windows, Outlook Web, and Outlook for Mac.

Status
Launched
General availability target
Jun 2026
Preview target
Not published
Products
Exchange, Outlook
Clouds
Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD
Release phases
General Availability
Platforms
Android, Desktop, iOS, Mac, Web
Added to the roadmap
21 May 2026
Last changed
15 Jul 2026 · 2mo ago
recently changed
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