Outlook’s New Summarize Option for Email Attachments

Among the blizzard of Copilot changes is one where Outlook can summarize attachments. That sounds small, but the feature is pretty useful if you receive lots of messages with “classic” (file) attachments. Being able to see a quick summary of long documents is a real time saver, and it’s an example of a small change that helps users exploit AI. Naturally, it doesn’t work with Outlook classic.

https://office365itpros.com/2025/06/23/summarize-attachment-outlook/