Details
The new sync window will allow you to choose how many days of email and attachments to download to your iOS or Android device for offline viewing…great for managing storage and data usage.

On your device head to Outlook > Settings > Accounts > Select an account > Sync settings:


Availability
Due mid-January to mid-February 2024.
Now due late March to mid-April 2024. 
Now due late May to early July 2024.

Source, related links, and references
MC696167.
Microsoft 365 Roadmap ID: 189809.
Images: Microsoft.

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Page originally published
9th December 2023 and kept up to date.

Want to know what else is late, new, and coming soon across M365 and Teams this month? Check out the latest roundup.