Roadmap › 518287

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

Launched Outlook Desktop
General availability
2026-05
Preview
Added
27 Oct 2025
Last modified
06 Jul 2026 23:00 UTC
First archived
25 Aug 2026
Release rings
General Availability
Clouds
Worldwide (Standard Multi-Tenant), GCC

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

View on microsoft.com