Sendium

Open-source, self-hosted headless SMS gateway for high-throughput delivery.

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Sendium is an open-source, self-hosted headless SMS gateway engineered for high-throughput delivery, including OTP messaging, sitting between an application and telecom carriers via SMPP. It's aimed at developers and businesses who want control over SMS routing and delivery instead of depending on a hosted SMS gateway vendor.

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Problem & pain-point mapping
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What it's a strong alternative to
Trust & credibility signals

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