Summarize Email Thread Feature Coming to Outlook

In late August, Microsoft plans to release the Copilot summarize email thread feature in Outlook clients without the need for a Microsoft 365 Copilot license. This news might seem surprising, but it’s simply a matter of business. If Microsoft doesn’t make basic AI features available in Outlook, ISVs (including OpenAI) will fill the gaps with add-ons. And that might make it harder to sell Microsoft 365 Copilot licenses.

https://office365itpros.com/2025/08/26/summarize-email-thread/