Mage SMS is a comprehensive and powerful module that enables you to send SMSs to your customers or administrators during various events in your Magento store.
Improve customer service & notify customers via SMS to establish greater levels of trust. Deepen the relationship with your customers and build a stronger customer loyalty with the help of SMS marketing. Loyal customers tend to buy more & more regularly. And they will frequently recommend your e-shop to others. More customers = higher sales...!
I must say that it is better that you are using the Mage SMS in your store.