Microsoft Outlook will introduce a user setting to include a comma in a recipient's contact name. This rollout will occur from mid-March to mid-June 2025. Users can change the default setting in Outlook settings. No admin action is required, but organizations may need to inform users and update documentation.
Applies to: Exchange Online · Microsoft 365 for the web · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).