MC1183298 - Updated compose toolbar and actions in Outlook Mobile

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).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.

  

  Screenshot 2: Tap Reorder to customize the toolbar.

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

  

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.