(Updated) Updated compose toolbar and actions in Outlook Mobile

Message Center ID: MC1183298
Exchange Online
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Feature update User impact
December 2025 January 2026

Summary

Outlook Mobile's compose toolbar will be customizable, allowing users to reorder actions for improved productivity. The feature rolls out globally from early December 2025 to January 2026, enabled by default for all users. No action is required, but updating helpdesk or documentation is recommended.

Details

Updated December 4, 2025: We have updated the timeline. Thank you for your patience. 

[Introduction]

We’re updating the compose toolbar in Outlook Mobile to give users more control over their email experience. This change allows users to customize the order and placement of toolbar actions when composing an email, helping streamline workflows and improve productivity.

[When this will happen:]

  • General Availability (Worldwide, GCC, GCC High, and DoD): Rollout will begin in early December 2025 and is expected to complete by end of January 2026 (previously early December 2025).

[How this affects your organization:]

  • Who is affected: All users of Outlook Mobile.
  • What will happen:
    • Users will be able to customize the toolbar layout when composing emails.
    • The feature will be available by default; no opt-in required.
    • Screenshot 1: Tap on the overflow menu (…) to find more actions.

      user settings

      Screenshot 2: Tap Reorder to customize the toolbar.

      user settings/p>

      Screenshot 3: You can customize the order of your actions by dragging and dropping

      user settings

[What you can do to prepare:]

  • No action is required at this time.
  • You may choose to notify helpdesk staff or update internal documentation to reflect this new customization capability.

[Compliance considerations:]

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

Change History

December 4, 2025 at 10:31 PM Updated
Title
Previous
Updated compose toolbar and actions in Outlook Mobile
New
(Updated) Updated compose toolbar and actions in Outlook Mobile
Summary
Previous
Outlook Mobile's compose toolbar will be updated in December 2025, allowing all users to customize the order and placement of toolbar actions by default. No opt-in is needed, and no immediate action is required, though helpdesk notification or documentation updates are optional. No compliance issues identified.
New
Outlook Mobile's compose toolbar will be customizable, allowing users to reorder actions for improved productivity. The feature rolls out globally from early December 2025 to January 2026, enabled by default for all users. No action is required, but updating helpdesk or documentation is recommended.
Last Updated Date
Previous
2025-11-06T00:19:39.990Z
New
2025-12-04T21:32:20.060Z
Tags
Previous
Feature update,User impact
New
Updated message,Feature update,User impact
Body Content
Previous

[Introduction]

We’re updating the compose toolbar in Outlook Mobile to give users more control over their email experience. This change allows users to customize the order and placement of toolbar actions when composing an email, helping streamline workflows and improve productivity.

[When this will happen:]

  • General Availability (Worldwide, GCC, GCC High, and DoD): Rollout will begin in early December 2025 and is expected to complete within the same timeframe.

[How this affects your organization:]

  • Who is affected: All users of Outlook Mobile.
  • What will happen:
    • Users will be able to customize the toolbar layout when composing emails.
    • The feature will be available by default; no opt-in required.
    • Screenshot 1: Tap on the overflow menu (…) to find more actions.

      user settings

      Screenshot 2: Tap Reorder to customize the toolbar.

      user settings/p>

      Screenshot 3: You can customize the order of your actions by dragging and dropping

      user settings

[What you can do to prepare:]

  • No action is required at this time.
  • You may choose to notify helpdesk staff or update internal documentation to reflect this new customization capability.

[Compliance considerations:]

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

New

Updated December 4, 2025: We have updated the timeline. Thank you for your patience. 

[Introduction]

We’re updating the compose toolbar in Outlook Mobile to give users more control over their email experience. This change allows users to customize the order and placement of toolbar actions when composing an email, helping streamline workflows and improve productivity.

[When this will happen:]

  • General Availability (Worldwide, GCC, GCC High, and DoD): Rollout will begin in early December 2025 and is expected to complete by end of January 2026 (previously early December 2025).

[How this affects your organization:]

  • Who is affected: All users of Outlook Mobile.
  • What will happen:
    • Users will be able to customize the toolbar layout when composing emails.
    • The feature will be available by default; no opt-in required.
    • Screenshot 1: Tap on the overflow menu (…) to find more actions.

      user settings

      Screenshot 2: Tap Reorder to customize the toolbar.

      user settings/p>

      Screenshot 3: You can customize the order of your actions by dragging and dropping

      user settings

[What you can do to prepare:]

  • No action is required at this time.
  • You may choose to notify helpdesk staff or update internal documentation to reflect this new customization capability.

[Compliance considerations:]

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

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