RM563806 - Outlook: Emails marked with External to be supported as Rules conditions

Microsoft 365 Roadmap

Metadata at latest

Roadmap ID

563806

View in M365 Roadmap

Last Updated

Jun 4, 2026

Published May 21, 2026

Status

Rolling out

Release

General Availability

Platforms

Android

Desktop

iOS

Mac

Web

Service

Exchange

Outlook

Tag

Rolling out

General Availability

Worldwide (Standard Multi-Tenant)

GCC

GCC High

DoD

Cloud

DoD

GCC

GCC High

Worldwide (Standard Multi-Tenant)

Metadata changes

Tags: DoD, GCC, GCC High, General Availability, In development, Worldwide (Standard Multi-Tenant)DoD, GCC, GCC High, General Availability, Rolling out, Worldwide (Standard Multi-Tenant)
Status: In developmentRolling out

Body changes

removed textadded text

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.

GA date: June CY2026