Legacy Outlook Email Status Update via HTTP Call This page is retained as a legacy integration reference for environments that still update Outlook email status through an HTTP call. Validation workflow Confirm the customer still needs this legacy HTTP-call workflow and identify the supported endpoint. Validate authentication, permission scope, request body, expected status code, and failure response in a controlled test. Document token storage and audit requirements before using the workflow in shared automation. Last updated: September 30, 2026