The Public Preview of the new "Message trace" feature in Microsoft Exchange Online will begin rolling out in mid-December 2024, with extended query range, subject and delivery status filters, customizable columns, and cmdlet changes. Admins can toggle the feature off if needed and should update to the latest PowerShell module version.
Applies to: Exchange Online · Microsoft 365 suite
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).