Send OTP verification codes via WhatsApp. 98% open rate, instant delivery, rich media support. Official Meta WhatsApp Business API integration at affordable pricing.
Higher engagement, better conversion, lower cost
WhatsApp messages have 98% open rate vs 20% for SMS. Users are more likely to see and act on WhatsApp OTPs instantly.
2.5 billion WhatsApp users worldwide. No app installation required - your users already have it.
WhatsApp OTP costs $0.006 vs SMS at $0.015. Save 60% on verification costs while improving user experience.
Send branded messages with images, buttons, and formatted text. Much better UX than plain SMS.
Everything you need for WhatsApp verification
Direct integration with Meta's WhatsApp Business API. Secure, reliable, and compliant.
OTPs delivered in under 5 seconds. Real-time delivery status and read receipts.
Send to 180+ countries. Consistent pricing worldwide, no surprise fees.
Create branded templates with your logo, colors, and call-to-action buttons.
Auto-fallback to SMS or email if user doesn't have WhatsApp installed.
Track delivery rates, open rates, and verification success in real-time.
Same API as email and SMS - just change the channel
// Send WhatsApp OTP
const response = await fetch('https://api.sendmator.com/v1/otp/generate', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
identifier: '+1234567890',
channel: 'whatsapp', // That's it!
fallback_channels: ['sms', 'email'] // Optional auto-fallback
})
});
const { session_id } = await response.json();
// Verify OTP (same as SMS/email)
const verify = await fetch('https://api.sendmator.com/v1/otp/verify', {
method: 'POST',
body: JSON.stringify({ session_id, code: userCode })
});
const { verified } = await verify.json();Free credits included. Connect your WhatsApp Business account in 5 minutes.