What Is an SMPP Gateway and When Do You Need One?

Most applications send SMS over a simple HTTPS API. Once you need very high, sustained throughput, SMPP becomes the better tool. Here is the difference in plain terms.

SMPP in one paragraph

SMPP (Short Message Peer-to-Peer) is a binary protocol that keeps a persistent connection (a bind) open between your system and the gateway. Because the connection stays open, you can push messages at a high, steady rate and receive delivery reports back over the same session - far more efficient than opening an HTTP request per message.

REST API vs SMPP

Use the REST API for most applications - it is quick to integrate and covers the vast majority of use cases. Move to SMPP when you need guaranteed, sustained throughput (thousands of messages per second) or you are an aggregator reselling capacity. With eSMS Africa both reach the same direct and Tier-1 carrier routes, so you can start on the API and add a bind later.

What a good gateway gives you

Guaranteed, reservable TPS, automatic failover and least-cost routing, delivery reports over the session, IP allow-listing, and a client portal with per-bind reporting and self-service top-up - without exposing the underlying carriers.

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