Retarus and the EWS retirement
Microsoft Graph migration status from Retarus's own notices. Last checked 2026-10-25.
Retarus Post-Delivery Protection
- Status
- Moved to Microsoft Graph
- Vendor notice
- https://www.retarus.com/products/email-security/postdelivery-protection/
“the Microsoft Graph API is used for Exchange Online”
Post-Delivery Protection (FAQ), read 2026-10-25.
What to do. Retarus uses the Graph API for Exchange Online and EWS only for on-premises Exchange. Register the Retarus app through the console wizard.
One email from ewsappid.com each time a status on this page changes, nothing else, and none after 1 April 2027. Every alert has an unsubscribe link; one press deletes your address, or write to support@ewsappid.com at any time. Sender details are on the contact page; see the privacy policy.
Application IDs
This site lists no fixed application ID for Retarus. Look up an ID from your EWS usage report on the home page, or find the name behind it in Entra, under Enterprise applications.
Every app in your tenant
The tenant plan reads your EWS usage report in your browser and matches each app against these statuses and your current allow list. All vendor statuses.