Outlook: MIP sensitivity label support S/MIME in new Outlook for Windows

Originally posted by Microsoft Feb 25, 2025 Uncategorized 0 Comments

New Outlook for Windows will support S/MIME (Secure/Multipurpose Internet Mail Extensions) signing and encryption as an outcome of sensitivity labels. Admins can use set label advanced setting to define the label to have S/MIME sign or encryption or both, and emails with those labels applied will enforce S/MIME sign and encrypt accordingly.

Product	Outlook
Release phase	General Availability
Release date	March CY2025
Platform	Desktop
Cloud Instance	Worldwide (Standard Multi-Tenant), GCC
Created	2025-02-24
Roadmap ID	482201
Roadmap Link	https://www.microsoft.com/microsoft-365/roadmap?id=482201