Note Version 2.0 of the Outlook REST API is deprecated. As announced on November 17, 2020, version 2.0 of the Outlook REST API has been deprecated. The v2.0 REST endpoint will be fully decommissioned in March 2024, and the v2.0 documentation will be removed shortly afterwards. Migrate existing apps to use Microsoft Graph. See a comparison to start your migration. The Outlook Mail API lets you read