M365 Changelog: Outlook on the web – MIP sensitivity label support S/MIME

MC531737 – Outlook on the web will support S/MIME (Secure/Multipurpose Internet Mail Extensions) sign and encryption as sensitivity label outcome. Customer admins could 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, and also it will support content marking of the label.

This message is associated with Microsoft 365 Roadmap ID 109582

When this will happen:

Targeted Release: Microsoft will begin rolling out in mid-April and expect to complete rollout by late April.

Standard Release: Microsoft will begin rolling out in early May and expect to complete rollout by late May.

How this will affect your organization:

If you have defined S/MIME email labels for your organization, you will see that S/MIME label also available in Outlook on the web to apply. If you do not have any S/MIME labels today, then it will not impact your organization. 

What you need to do to prepare:

If you would like to start using S/MIME labels, please refer the admin instructions how to enable S/MIME labels via set-Label cmdlets advanced setting.