Legacy Outlook Email Status Update via HTTP Call

Last reviewed: September 30, 2026
This page is retained as a legacy integration reference for environments that still update Outlook email status through an HTTP call.
What changed in this article
Marked the Outlook HTTP-call procedure as legacy and integration-specific because Microsoft authentication and Graph/API behavior can change.
Added checks for OAuth/token handling, endpoint ownership, least-privilege permissions, response validation, and audit logging.
Added guidance to avoid hard-coded credentials and to confirm whether Microsoft Graph or a maintained integration should replace this approach.
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.
Review note: This page now warns that Outlook status changes should use maintained Microsoft/API practices where available.
Last updated: September 30, 2026
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