Secure Authentication
with OTP Verification
Protect logins, payments, and signups with instant one-time passwords via SMS, Email, or WhatsApp. Enterprise-grade security with global delivery.
99.9%
Delivery Rate
98%
Read Rate
2s
Avg Delivery
24/7
Monitoring
Success Rate
99.4%
Avg Delivery
1.6s
Enterprise-Grade Security
Built for applications that can't compromise on security or reliability.
End-to-End Encryption
All OTPs are encrypted in transit and at rest with AES-256 encryption.
GDPR & HIPAA Compliant
Built for regulated industries with strict data protection requirements.
Adjustable Expiry
Set OTP expiry from 30 seconds to 10 minutes based on your security needs.
300ms Delivery
Average OTP delivery time of 300ms globally with 99.9% reliability.
Intelligent Routing
Automatically selects the fastest delivery channel for each user.
Global Infrastructure
Multi-region deployment with automatic failover and 99.99% uptime SLA.
Multiple Delivery Channels
Reach your users through their preferred channel with automatic fallback.
SMS
Global coverage with direct carrier connections in 200+ countries
Transactional email delivery with 98%+ inbox placement rate
Official WhatsApp Business API with rich message templates
Voice
Automated voice calls with text-to-speech in 50+ languages
Automatically retries failed deliveries through alternate channels to ensure your users always receive their OTP.
Integrate in Minutes
Our developer-friendly SDKs and comprehensive documentation make integration effortless.
Create Account
Sign up and get your API keys in seconds
Install SDK
Add our library to your project with npm or yarn
Send & Verify
Implement OTP flows with just a few lines of code
// Send OTP via SMS
import { OTP } from 'secure-otp-sdk';
const otp = new OTP(process.env.API_KEY);
// Send OTP
const response = await otp.send({
phone: '+1234567890',
channel: 'sms',
length: 6,
expiry: 30, // seconds
template: 'Your code is {code}'
});
// Verify OTP
const isValid = await otp.verify({
id: response.id,
code: userEnteredCode
});Trusted Across Industries
Secure OTP verification for applications that demand the highest security standards.
Mobile App Authentication
Secure login and account recovery for mobile applications
Payment Verification
Two-factor authentication for financial transactions
Passwordless Login
Replace passwords with secure one-time codes
Account Recovery
Verify user identity during password reset flows
Sensitive Operations
Authorization for account changes and admin actions
Trusted by Security Teams
Join thousands of companies securing their applications with our OTP service.
"Reduced our OTP delivery failures by 98% compared to our previous provider. The reliability is unmatched."
Emma Rodriguez
Security Engineer at FinTech Inc
"Implementation took less than a day. The documentation is superb and their support team actually understands developers."
James Chen
CTO at HealthStart
"Our compliance team was impressed with their security certifications. Made our audit process much smoother."
Fatima Nkosi
Compliance Officer at BankCorp
Get Started with Our OTP API Today
Start with 1,000 free OTPs every month. No credit card required.
SOC 2 Type II certified • HIPAA compliant • GDPR ready