The new Outlook now features a Copilot-powered thread summarization button that appears automatically in email chains with five or more replies. Users with Microsoft 365 Copilot licenses can get an instant summary of any long conversation without scrolling through every message.
Available to all users with an M365 Copilot license.
How It Works
- Automatic Trigger on 5+ Reply Threads
- Copilot-Generated Summary Panel
- Available in New Outlook for Windows and Web
No configuration needed — the Summarize Thread button appears automatically for eligible users.
Our Take
This is the right call, but Microsoft is underselling how disruptive it'll be. Users have built years of muscle memory around that Chat / Teams split — expect a wave of support tickets the week it lands. Get ahead of it with a quick communication to your users before it shows up, not after.
Bottom Line
Good change, bad rollout timing for unprepared orgs. Send a user comm now.
