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Roadmap ID 563806 LaunchedGCCGCC HighDoD

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

Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 roadmap entry

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
Source created
21 May 2026
Source modified
15 Jul 2026 · 4mo ago
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

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