MC1162289 – M365 Change Digest

One-line summary

Copilot chat in Outlook now lets users quickly summarize emails and attachments with one click; rollout starts mid-October 2025 for all Outlook platforms, no admin action needed.

Similar updates

Details

RoadmapIds

503316

Summary

Outlook now offers email and attachment summarization via Copilot chat for Microsoft 365 Copilot license holders with pinning enabled. Available across platforms and Outlook versions, it requires no admin setup and rolls out worldwide from October to November 2025. No compliance issues identified.

Platforms

Android, Desktop, iOS, Mac, Web

Body (from Message Center)

Updated October 2, 2025: We have updated the content. Thank you for your patience.

[Introduction]

We're introducing a new way to quickly summarize emails and attachments using Copilot chat in Outlook. With a single click, users can generate concise summaries of email content and attachments, helping them stay focused and save time. This feature supports both Classic and New Outlook for Windows and is available to users with a Microsoft 365 Copilot license and pinning enabled.

This message is associated with Microsoft 365 Roadmap ID 503316.

[When this will happen:]

Targeted Release (Worldwide): Rollout underway by early October 2025; expected completion by early November 2025.
General Availability (Worldwide): Begins mid-October 2025; expected completion by late November 2025.

[How this affects your organization:]

Who is affected: Users with a Microsoft 365 Copilot license and pinning enabled in Outlook across Android, Desktop, iOS, Mac, Web, and Windows (Classic and New).

What will happen:

Users will see a new option to summarize email content using Copilot chat:

user settings

The feature will be available across Android, Desktop, iOS, Mac, Web, and both Classic and New Outlook for Windows.
No admin configuration is required; the feature is enabled by default for eligible users.
Existing policies are respected; no changes to admin controls are needed.

[What you can do to prepare:]

No action is required.
You may choose to inform users about the new summarization capability.
If desired, update internal documentation to reflect the availability of this feature.

[Compliance considerations:]

No compliance considerations identified, review as appropriate for your organization.

Raw JSON (for debugging)

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    "action_required_by": null,
    "ai_action_required_by": null,
    "ai_actions": [
      "Inform users about new summarization feature",
      "Update internal documentation if needed"
    ],
    "ai_master_tags": [],
    "ai_model": "gpt-4.1",
    "ai_summary": "Copilot chat in Outlook now lets users quickly summarize emails and attachments with one click; rollout starts mid-October 2025 for all Outlook platforms, no admin action needed.",
    "ai_topics": [
      "Exchange",
      "Copilot",
      "Outlook"
    ],
    "category": "stayInformed",
    "details_map": {
      "Platforms": "Android, Desktop, iOS, Mac, Web",
      "RoadmapIds": "503316",
      "Summary": "Outlook now offers email and attachment summarization via Copilot chat for Microsoft 365 Copilot license holders with pinning enabled. Available across platforms and Outlook versions, it requires no admin setup and rolls out worldwide from October to November 2025. No compliance issues identified."
    },
    "id": "MC1162289",
    "importance": 1,
    "is_major_change": false,
    "last_modified": "2025-11-14T20:23:23Z",
    "ms_products": [
      "Exchange",
      "Copilot"
    ],
    "platforms": "Android, Desktop, iOS, Mac, Web",
    "roadmap_ids": [
      "503316"
    ],
    "services": [
      "Exchange Online",
      "Microsoft Copilot (Microsoft 365)"
    ],
    "severity": "normal",
    "tags": [
      "Updated message",
      "New feature",
      "User impact",
      "Admin impact"
    ],
    "title": "(Updated) Microsoft Outlook: Summarize email with Copilot chat"
  }
}