Every OTP.
Every time.
Every channel.
OTP SMS is the transactional messaging platform your product team stops worrying about. Send one-time passwords, alerts and receipts over SMS, WhatsApp Business API and RCS from a single, no-nonsense API.
Three channels.
One grid.
We built OTP SMS because sending a login code shouldn't require three vendors, four dashboards and a prayer.
SMS
Global A2P SMS with direct operator routes. The workhorse of authentication.
Read the deep-dive →The WhatsApp Business API for verified, high-trust transactional messages.
Read the deep-dive →The boring
messaging
partner.
Most messaging vendors sell you a pretty dashboard and hope you never look at the delivery reports. We take a different approach. OTP SMS is built by engineers who spent a decade cleaning up other people's OTP flows — the kind of people who read carrier logs for fun and get grumpy when a message takes more than two seconds.
Whether you're rolling out two-factor authentication for a fintech launch, sending shipment updates on WhatsApp, or piloting rich, branded messages on RCS, the same principles apply: direct routes, transparent pricing, real humans on support. No reseller games. No mystery fallbacks that quietly triple your bill.
Our platform handles the messy parts — operator connections, sender ID registration, template approvals, DLT compliance, opt-out plumbing — so your team can go back to shipping the product. If you want to nerd out on the details, our blog has honest write-ups on each channel.
