Reliable SMS OTP service with global coverage. Send verification codes to any phone number worldwide. Simple REST API, high deliverability, pay-as-you-go pricing.
Built for developers, trusted by businesses
Send SMS OTP to 180+ countries with direct carrier connections. No geographic restrictions, consistent delivery worldwide.
99% delivery success rate with intelligent routing. Multiple carrier connections ensure SMS reaches users even during network issues.
Simple REST API that takes minutes to integrate. Clear documentation, code examples in multiple languages, and comprehensive error handling.
No monthly fees, no commitments. Only pay for SMS OTP messages you send. Transparent pricing with no hidden costs.
Everything you need for SMS verification
Automatic carrier selection for optimal delivery. Smart routing based on location, carrier status, and historical performance.
SMS OTP codes delivered in under 10 seconds. Priority routing ensures verification codes arrive instantly.
Real-time delivery status and webhooks. Track every SMS from send to delivery with detailed reporting.
Rate limiting, code expiration, and retry protection. Built-in security to prevent abuse and fraud.
Use your brand name as SMS sender (where supported). Build trust with branded verification messages.
Auto-fallback to email or WhatsApp if SMS delivery fails. Ensure verification codes always reach users.
Send SMS verification codes with just two API calls
// Send SMS 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: 'sms',
fallback_channels: ['email'] // Optional fallback
})
});
const { session_id } = await response.json();
// Verify OTP code entered by user
const verify = await fetch('https://api.sendmator.com/v1/otp/verify', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
session_id: session_id,
code: userEnteredCode
})
});
const { verified } = await verify.json();
if (verified) {
console.log('SMS OTP verified successfully!');
}Secure authentication for every scenario
Verify phone numbers during signup with SMS OTP. Prevent fake accounts and ensure real users join your platform.
Add SMS-based 2FA to protect user accounts. Essential security layer for banking, healthcare, and enterprise applications.
Send SMS OTP for order verification and delivery updates. Confirm customer intent for high-value e-commerce transactions.
Verify financial transactions with SMS codes. Required for PSD2 compliance and reducing payment fraud.
Free credits included. Send SMS verification codes globally in minutes.