You can choose to receive all API delivery receipts to a common URL, configured in Messenger->Settings->SMS Delivery Receipts. You can also choose to use the receipt_url parameter in send to receive SMS delivery confirmations to unique URLs on a per message basis.
Upon a delivery receipt being sent from the networks we will POST the following variables to your specified URL.
|number||The recipient's mobile phone number.|
|status||The delivery status of the message. This will either be: D, U, I or ?. See Helpful information for status definitions.|
|customID||If applicable, the custom ID associated with the message. This can be set by using the custom parameter in send.|
|datetime||The datetime the Delivery Receipt was received from the operator. In MySQL datetime format.|
<?php $number = $_POST['number']; $status = $_POST['status']; $customID = $_POST['customID']; ?>