Looking for a Twilio Alternative? A Cheaper Way to Send OTP SMS
Twilio costs ~$0.0079 per US SMS and far more elsewhere. Koipabo charges a flat $0.005 per delivered message worldwide — pay only for delivered SMS, no monthly fee, no card required to start.
Why teams look for a Twilio alternative
Twilio is the default name in SMS APIs, and it is a good product. The problem is price: a US verification message runs about $0.0079, the UK about $0.04, and some destinations — Bangladesh, for example — can cost more than $0.50 per message on Twilio's international routes. If you send 100,000 OTPs a month, even a fraction of a cent per message is real money.
The second frustration is billing for failure. Most aggregator-style providers charge for every message they accept, whether or not it reaches a handset. On flaky routes you can pay for an entire campaign and still lose the conversions that never received their code.
How Koipabo prices differently
Koipabo charges a flat $0.005 per delivered SMS to any destination, with a few premium countries priced slightly higher on a published rate card. That is roughly 40% below Twilio's US rate and an order of magnitude below Twilio's rates for South Asia.
More importantly, you only pay for messages that are actually delivered. A failed send is refunded automatically — a dead route never costs you money.
- Flat $0.005 per delivered SMS (default rate, any destination)
- Pay only for delivered messages — failures are refunded
- No monthly fee and no minimum commitment; top up from $10
- Per-country rates published openly on the pricing page
Where the savings come from
Instead of renting capacity from big carriers, Koipabo routes messages through a distributed pool of Android devices and independent SMS gateways operated by suppliers around the world. Suppliers compete for traffic, which pushes the price down, and the 70/30 revenue split is transparent: 70% goes to the supplier network that delivers your message, 30% keeps the platform running.
The trade-off is straightforward: this is a network built for OTP and transactional messaging, not bulk marketing. Verification codes, order updates, and delivery notifications are exactly what it is optimized for.
Switching takes minutes
Koipabo's HTTP API mirrors the basics of any SMS provider: one POST request with a phone number, a message, and your API key. Register an account, copy the key from the dashboard, and send your first message without talking to anyone. Integration examples in curl, Node.js, and Python are in the API docs.
If you are over-paying on verification SMS today, run the cost calculator on the pricing page with your real monthly volume — the difference usually pays for the migration time in the first week.