The Elora messaging API sends a notification for previously sent messages. To receive these notifications, you need to set a status callback URL. From the dashboard select:Apps → App Settings → Default webhook status urlThese requests are sent as a POST request to the URL provided, as application/x-www-form-urlencoded.
A unique identifier for each message. This is the same id as the one in the response when a message is sent.
The status of the message. Possible values are: 'sent', 'failed'
The error description. This is an optional field and is only sent when status is 'failed'.
Your endpoint must acknowledge the request by returning one of the following HTTP status codes:
* Failure to return a standard success code will result in the message being flagged as Delivery Failed.
