RatSMS is a No.1 SMPP Gateway Provider in India. SMPP Gateway is a communication protocol that allows Bulk SMS messages to be sent from one network to another. It works by using an external application (such as RatSMS Application) on a SMPP server that connects to both networks, allowing them to communicate with each other. RatSMS gives SMPP SMS gateway API which allows you to send bulk sms from your application. Click to get Leads