Microsoft Outlook for iOS and Android is enhancing the External Recipients MailTips feature for better offline accuracy and performance. The rollout, starting mid-February 2025 and completing by late April 2025, requires no admin action but users should be notified. More details will be updated on Microsoft Learn.
Applies to: Exchange Online · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).