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Outlook: Co-Authoring Highlight and Rewrite

Launched Outlook Web

General availability: 2026-07
Preview: —
Added: 26 May 2026
Last modified: 11 Sep 2026 22:10 UTC
First archived: 25 Aug 2026
Release rings: General Availability
Clouds: Worldwide (Standard Multi-Tenant)

Description

<p>Users can now collaborate with Copilot to make improvements to email drafts. Select a section of the draft and ask Copilot to make changes, like changing its length, tone, or structure.</p>

Message Center posts citing this feature

MC1430542 (Updated) Microsoft Outlook: Collaborate with Copilot while drafting email