I have also tried 'notifications', 'users/me/notifications', and a few others to no avail. 'message': 'Resource not found for the segment 'notification'.', 'notificationUrl': ' 'resource': 'notification', The above message also correctly calls my server's /notifications route with this param: Validation: Testing client application reachability for subscription Request-Id: 2f3cc3b8-b2c2-5922-451c-433add43bc74 'message': 'Subscription for resource 'me/notifications' is not supported.', 'notificationUrl': ' 'resource': 'me/notifications', Here are some of the things I have tried and the results: I have tried many, but I can't even nail down what the 'resource' is supposed to be in the subscription type. Instead, I am manually sending http requests. I am not using a language with Microsoft library support so I cannot use their SDKs. User signs in to your application, which creates a subscription with the Microsoft Graph notification service. Note Each admin can have their Preferences set and the above limit of two email address is per admin account.

I have been trying to figure out how to use the beta notifications resource to send push notifications to users in Teams, but I cannot get past step 1. To do so, select the active issue you want to receive email notification updates for, select Manage notifications for this issue, and then specify: Up to two email addresses.

Microsoft to do notifications