💡 Our Technical Review in summary
Summary
- Microsoft is relocating the “Send” button in the Outlook mobile app (iOS and Android) from the bottom toolbar to the header area at the top of the compose view.
- This change is designed to reduce accidental message sends by placing the button in a less crowded, more intentional location.
- The rollout is scheduled to begin in early September 2025 and is expected to reach General Availability by early March 2026.
- This update is tracked under Microsoft 365 Roadmap ID 499900.
Impact
- User Experience: Mobile users will need to adjust to a new UI layout. The “muscle memory” of tapping the bottom of the screen to send will no longer apply, which may cause temporary confusion.
- Platform Scope: This change strictly affects the Outlook mobile clients for iOS and Android. It does not impact Outlook on the web or desktop versions.
- Technical Stability: There is no reported impact on accessibility tools, keyboard shortcuts, or existing third-party add-ins and customizations.
- Default State: This feature will be enabled by default for all users and cannot be disabled by administrators.
Action Required
- Documentation Update: Review and update internal training materials, help desk manuals, and “how-to” guides that contain screenshots of the Outlook mobile compose screen.
- User Communication: Notify mobile users of the upcoming UI change to minimize support tickets related to the “missing” send button during the rollout phase.
- Add-in Verification: While no impact is expected, if your organization uses custom UI extensions or add-ins in the mobile compose view, perform a visual check once the update reaches your tenant to ensure no UI overlap occurs.
Microsoft Official Update
Service: N/A
Category: stayInformed
Severity: normal
Introduction
To help reduce accidental message sends, Outlook mobile is updating the placement of the Send button in the compose view. The button will move from the bottom toolbar to the header area, placing it in a less crowded location. This change supports a more intentional and error-free messaging experience for mobile users by minimizing the likelihood of accidental taps.
This message is associated with Microsoft 365 Roadmap ID 499900.
When this will happen
General Availability (Worldwide, GCC, GCC High, and DoD): We will begin rolling out in early September 2025 and expect to complete by early March 2026.
How this will affect your organization
Once this change is deployed, users on Outlook mobile clients (Android and iOS) will see the Send button relocated to the top of the compose view. This update is designed to reduce accidental taps and improve usability. The feature will be enabled by default.
The following screenshots illustrate the updated Send button placement in the compose view on Outlook mobile.
Image 1 – New Send button placement in Outlook for iOS – full compose view:
Image 2 – New Send button placement in Outlook for iOS – small compose view:
Image 3 – New Send button placement in Outlook for Android – full compose view:
This change does not affect Outlook on the web or desktop clients.
- Add-ins and customizations: This change does not affect existing add-ins or customizations in the compose view.
- Accessibility tools and keyboard shortcuts: There will be no impact.
- Consistency: The new placement is consistent across screen sizes and supported browsers.
What you can do to prepare
No admin action is required.
We recommend notifying your users about this change and updating any relevant training materials or documentation to reflect the new button placement.
If applicable, test any custom add-ins or UI extensions in the compose view to ensure compatibility, although no known impact is expected.
Compliance considerations
No compliance considerations identified, review as appropriate for your organization.
