The Outlook REST APIs are a part of the Microsoft Graph. Microsoft recommends using the Microsoft Graph to access Outlook mail, calendar, and contacts. You should use the Outlook API endpoints directly (via
https://outlook.office.com/api) only if you require a feature that is not available on the Graph endpoints. For more information on the differences between Graph and the Outlook endpoints, see Compare the Microsoft Graph and Outlook endpoints.
The following APIs are released and ready for production use in both the Graph and Outlook endpoints.
- Mail API
- Calendar API
- Contacts API
- Groups API
- Push Notifications API
- User Photo API
- Open Extensions API
- Extended Properties API
- FindMeetingTimes API
The following APIs are released and ready for production in the Outlook endpoint, but are in preview status in the Graph endpoint.
The following APIs are in beta and should not be used in production.
APIs only available in Outlook endpoint
The following APIs are only available on the Outlook API endpoint.