Outreach and the EWS retirement
Microsoft Graph migration status from Outreach's own notices. Last checked 2026-10-25.
Outreach Microsoft Graph mailbox integration
- Status
- Moved to Microsoft Graph
“Outreach supports Microsoft Graph Integration for connecting user calendars and user mailboxes, which previously was possible over EWS API only.”
How to connect Office 365 mailbox to Outreach using Microsoft Graph, read 2026-10-25.
What to do. Outreach offers a Graph connection for mailboxes and calendars that used to need EWS. Users or admins should reconnect each mailbox with the Graph method.
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Application IDs
4125a8ba-a96a-4839-8cb5-39d4234e0aa6Outreach (EWS connection, email)90ef5da8-ca40-43e4-8420-2a2c6cc08356Outreach (Microsoft Graph connection, email and calendar)
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.