Verify every user. Everywhere.
Deliver one-time passwords via SMS, WhatsApp, or Voice — with automatic fallback and sub-3 second delivery across 50+ African networks.
Verification Code
Sent to +233 ** *** 4521
99.9%
Delivery rate
<3s
Avg. delivery time
3
Fallback channels
50+
African networks
Why Sendexa OTP
Built for African authentication
Most OTP providers are built for Europe or the US. Sendexa is built for the realities of African connectivity — low bandwidth, diverse telecoms, and high fraud risk.
Sub-3s Delivery
OTPs reach users in under 3 seconds on average, across all major African telecom networks.
Auto Fallback
If SMS fails, automatically retry via WhatsApp or Voice — zero missed verifications.
Pan-African Coverage
Direct carrier connections in Ghana, Nigeria, Kenya, Côte d'Ivoire, and 15+ more markets.
Fraud Protection
Rate limiting, IP intelligence, and SIM-swap detection built into every OTP request.
Simple API
One endpoint to send and verify. SDKs for Node.js, Python, PHP, and Go.
Full Analytics
Track delivery rates, conversion funnels, and drop-off points in real time.
Developer-first
Send & verify in under 10 lines
A single API handles the full OTP lifecycle — generation, delivery, retry logic, and verification. No third-party services to stitch together.
// Send OTP via Sendexa
const sendexa = new Sendexa(process.env.SENDEXA_KEY);
const otp = await sendexa.otp.send({
to: "+233244123456",
channel: "sms", // or "whatsapp" | "voice"
digits: 6,
expiry: 300, // 5 minutes
template: "Your {{brand}} code is {{otp}}"
});
// Verify OTP
const verify = await sendexa.otp.verify({
reference: otp.reference,
code: userInput,
});
if (verify.valid) {
// ✅ User authenticated
}Use cases
One OTP API, many flows
Login & 2FA
Protect user accounts with a second factor that works even on feature phones.
Transaction Signing
Require OTP confirmation before high-value payments or account changes.
Phone Verification
Verify mobile numbers at signup to prevent fake accounts and reduce churn.
Password Reset
Let users recover accounts securely without relying on email alone.
Ready to secure your users?
Get 100 free OTP verifications when you create your account today.