Office Insider for Android Build 16.0.13231.20002 release notes.
Outlook
Sync events on all your calendars
Want to sync events between Outlook and other calendars on your Android device? Outlook for Android now supports two-way calendar sync for Microsoft 365, Kantoor 365, and Outlook.com accounts. Events created in other calendar apps (Samsung Calendar, Google Calendar, etc.) can now be viewed/edited from Outlook and vice versa!
Customize your mail notifications
Show your mail notifications some love. Customize mail notification actions by navigating to Instellingen > Mail > Notifications. Choose from five custom actions, like Flag or Mark Read, or remove extraneous actions, and tailor email notifications to your heart’s content.
Download Teams before your meeting
Outlook will now prompt you to download Teams to your mobile device when you create an online meeting that requires Teams. This update will help you avoid last-minute downloads and delays by getting Teams mobile in advance of your meeting.
