POST api/Outlook/NotificationListener?validationToken={validationToken}

This is the notification validation endpoint that is registered with the webhook subscriptions.

Request Information

URI Parameters

Name	Description	Type	Additional information
validationToken	Microsoft Graph encoded validation token	string	Required

Body Parameters

None.

Response Information

Resource Description

Response MUST be text/plain content-type in 200 response, with the validationToken. https://docs.microsoft.com/en-us/graph/webhooks#notification-endpoint-validation

System.Net.Http.HttpResponseMessage

Name	Description	Type	Additional information
Version		System.Version	None.
Content		System.Net.Http.HttpContent	None.
StatusCode		System.Net.HttpStatusCode	None.
ReasonPhrase		string	None.
Headers		Collection of Object	None.
RequestMessage		System.Net.Http.HttpRequestMessage	None.
IsSuccessStatusCode		boolean	None.