# SMS Gateway vs SMS API | VeloBotix

> What an SMS gateway is versus an SMS API, and how VeloBotix uses both for Sri Lankan businesses and developers.

Source: https://www.velobotix.app/resources/comparisons/sms-gateway-vs-sms-api

2026-08-26

# SMS gateway vs SMS API

## What is an SMS gateway?

An SMS gateway is the infrastructure that connects your organisation to mobile networks. In Sri Lanka that means routing through operators such as Dialog, Mobitel, Hutch, Airtel and Lanka Bell, plus Sender ID and delivery status.

## What is an SMS API?

An SMS API is how software talks to the gateway over HTTP. Your backend authenticates and requests sends (single, bulk or balance checks). Humans can skip the API and use the portal for campaigns.

## How VeloBotix relates both

VeloBotix is a Sri Lankan SMS gateway and SMS API platform. The portal and the REST API share the same account, credits and Sender ID. OTP and order alerts usually use the API; promotions often use the portal.

## FAQ

### Do I need both?

You need a gateway. You need the API only if software sends the messages. Campaign teams can live in the portal.

[SMS gateway](https://www.velobotix.app/sms-gateway-sri-lanka) · [Contact](https://www.velobotix.app/contact)