Users of New Outlook for Windows will soon be able to set custom account descriptions to better identify multiple accounts. The feature rolls out from late February 2025 (Targeted Release) to late September 2025 (General Availability) with no admin action required.
Applies to: Exchange Online · Microsoft 365 for the web · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).