IMIconnect makes it easy for you get the delivery receipts for communications sent over any of the supported channels through a simple configuration. A delivery notification contains the delivery status of a message that is sent through IMIconnect.
You just need to add a URL in Outbound Settings under the General Settings of a Service and select the the type of notifications that you would like to receive on the URL
The delivery receipts will be posted to the configured URL using HTTP POST request as soon as the status of the messages that are sent changes.
Refer docs for more information on the delivery notifications supported for each channel and corresponding JSON format.