# SMPP API

This guide provides all the information you need to integrate SMPP into your applications for sending and receiving SMS messages efficiently and reliably.

## Useful Resources

* SMPP V5 - <https://smpp.org/SMPP_v5.pdf>
* SMPP V5 DLR - <https://smpp.org/smpp-delivery-receipt.html>
* SMPP Error Codes - <https://smpp.org/smpp-error-codes.html>