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Outlook: LDAP directory support for S/MIME in New Outlook

Roadmap ID
518287
View in M365 Roadmap
Product
Outlook
Published
October 27, 2025
Status
In development
Cloud Instances
Worldwide (Standard Multi-Tenant)GCC
Release Phase
General Availability
Platform
Desktop
Expected Release
June 2026

Description

The new Outlook now supports LDAP (Lightweight Directory Access Protocol) directories for sending S/MIME encrypted emails. This allows users to add an LDAP directory in the new Outlook and use it to fetch recipients’ certificates from the configured directory when sending S/MIME encrypted messages. #newoutlookforwindows

Change History

Show
April 14, 2026 at 12:00 AM Updated
Release Date
Previous
April CY2026
New
June CY2026
Modified Date
Previous
2025-10-27T23:15:26.000Z
New
2026-04-13T23:15:13.000Z

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