Sendium

Glowing blue binary code forming the shape of a smartphone and a speech bubble on a dark digital background, featuring the Sendium Open Source SMS Gateway logo in the bottom right.

What Is an SMS Gateway?

Behind every “simple” text message sent from an application, lies a sophisticated layer of infrastructure. That layer is the SMS Gateway.

An SMS Gateway is the system that connects your software applications to mobile networks. Your web apps, mobile backends, CRM systems, banking platforms, or IoT services communicate with it through APIs.

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A man wearing glasses stands in a dark room illuminated by blue light from a projector displaying code behind him, with the Sendium Open Source SMS Gateway logo in the bottom right corner.

Why We Built Sendium Open Source

At Cytech Mobile, we have spent years building messaging software for organizations that care deeply about reliability, security, and operational visibility. We also actively participate in the open-source ecosystem — not only by using it, but by contributing back to it.

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