Analytics of sms campaigns also personalized as well as for email campaign. For sent sms campaign you will know for who of your subscribers campaign were delivered and who weren't received it.
The service will also analyze the causes of non-delivery the SMS. Information about the causes of non-delivery will help you decide whether to continue to send messages to particular subscribers.
If the messages aren't delivered to a particular subscriber regularly, excluding them from the mail lists, you'll not only save money on sending but also can really evaluate the potential of your subscriber base.