What is SMPP Messaging?
SMPP is a protocol for sending SMS messages. Commonly referred to as "Short Code" or "Express" text messaging, it is technically called "Short Message Peer-to-Peer Protocol" or SMPP. It is designed to provide a flexible data communications interface for transfer of short message data. When you send a text message from your cell to your friend's cell, it's being routed via the SMPP protocol. These messages go through the carriers' cell networks, as compared to the carriers' email network called SMTP.
SMPP is the preferred method as it has priority routing and tends to be delivered at a quicker rate.
Messages sent over SMPP are routed directly to and from the wireless service provider over a secure private network. Most major wireless service providers can provide confirmation of message delivery. The greatest benefit to SMPP is the fact that messages are two-way, enabling mobile phone subscribers to respond to the messages you send them. SMPP also supports the ability to schedule the message delivery date and time among other functions.