How to check if a SMS was sended?


In my application i send many SMS (like > 200 per day) and i want to check if a SMS was sended or not.

Is possible ? How ?

Thanks !

(Im french, if you see errors in my english please tell me in pm thanks)

How do you send the SMS?
How do you define “sent”? Submitted, gone out to the network, received on the other side?