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MC1183297 Stay informedUpdated messageFeature updateUser impact

New toolbar customization for multi-select in Outlook Mobile

From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.
Exchange Online
Microsoft 365 admin center

Rollout

Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".

Schedule dates changed in the text

Date phrases in schedule sentences differ between the versions this installation saw
  • Seen 16 Dec 2025 mid-December 2025, late January 2026 → mid-January 2026, mid-February 2026
  • Seen 4 Dec 2025 early December 2025 → mid-December 2025

Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.

What the notice says

Microsoft’s text, safely structured

Updated December 16, 2025: We have updated the timeline. Thank you for your patience.

Introduction

We are updating the multi-select toolbar in Outlook Mobile. This change will allow users to customize the order and placement of toolbar actions when selecting multiple emails. Users can now Move to Other, Report Junk, Ignore, Pin, and Snooze multiple messages at once.

When this will happen

  • General Availability (Worldwide, GCC, GCC High, DoD): Rollout will begin in mid-January 2026 (previously mid-December 2025) and is expected to complete by mid-February 2026 (previously late January).

How this affects your organization

  • Who is affected: Users of Outlook Mobile.
  • What will happen:
    • Users will be able to customize the multi-select toolbar.
    • No admin action is required.

What you can do to prepare

  • No admin action is required.

Compliance considerations

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

What changed

Between archive captures, newest first

  1. Updated December 4,16, 2025: We have updated the timeline. Thank you for your patience.  Introduction … happen: General Availability (Worldwide, GCC, GCC High, DoD): Rollout will begin in mid-December 2025mid-January 2026 (previously early December)mid-December 2025) and is expected to complete by mid-February 2026 (previously late January 2026.January). How this affects your organization: Who is affected: Users of Outlook Mobile. …

    • Tags Feature update, User impact → Updated message, Feature update, User impact

    Updated December 4, 2025: We have updated the timeline. Thank you for your patience.  Introduction We are updating the multi-select toolbar in Outlook Mobile. This change … happen: General Availability (Worldwide, GCC, GCC High, DoD): Rollout will begin in mid-December 2025 (previously early December 2025December) and is expected to complete by late January 2026. How this affects …

  3. · first version seen

No related evidence found in this installation's recent collection. This does not establish that no announcement exists.

Not confirmed here

What this page cannot tell you
  • Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.
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