check before: 2026-04-01
Product:
Exchange, Outlook
Platform:
Online, Web, World tenant
Status:
In development
Change type:
New feature, User impact, Admin impact
Links:
Details:
Summary:
A new Exchange Online admin policy will let admins set a tenant-wide default for using commas as recipient separators in Outlook mail compose and reply. Rollout starts April 2026. Users can override unless locked by policy. No automatic changes; no action required.
Details:
[Introduction]
We're adding a new Exchange Online admin policy that gives admins more control over the default Mail Compose and Reply setting that determines whether commas are used as recipient separators.
This message is associated with Microsoft 365 Roadmap ID 557676.
[When this will happen]
General availability (Worldwide): Rollout will begin in early April 2026 and complete by mid‑April 2026.
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2026-02-26
updated:
2026-02-26
Task Type
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MS How does it affect me
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MS Preperations
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summary for non-techies**
Microsoft is introducing a feature for Exchange Online and Outlook that allows IT administrators to set a default rule for using commas instead of semicolons as separators in email recipient lists, which can be enforced organization-wide or left to individual user preference.
Direct effects for Operations**
User Experience Disruption
If the new delimiter setting is enforced without proper communication, users may face confusion when composing emails, leading to potential misaddressing of emails and communication errors.
- roles: End Users, Helpdesk Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=557676
Increased Support Requests
Changes to the recipient separator policy may lead to an increase in support requests from users who are unaware of the new settings or how to adjust them, impacting IT support resources.
- roles: Helpdesk Staff, IT Support Managers
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=557676
Configutation Options**
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explanation for non-techies**
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Last updated 2 hours ago ago
