Secure Identity
Verification
Verify users, transactions, and access with multi-channel OTPs. Protect against fraud while delivering a seamless user experience.
4+
Channels
99.9%
Success Rate
5s
Avg. Delivery
24/7
Support
4+
Channels
99.9%
Success Rate
5s
Avg. Delivery
Comprehensive Verification
Everything you need to verify identities securely and seamlessly.
Multi-Channel Verification
Send OTPs via SMS, WhatsApp, Email, and Voice. Choose the channel that works best for your users.
One-Time Passcodes
Generate and deliver secure OTPs with customizable length, expiration, and format.
Time-Based OTP (TOTP)
Implement TOTP for authenticator apps like Google Authenticator and Authy.
Fraud Prevention
Detect and prevent fraud with velocity checking, geo-location, and device fingerprinting.
Identity Verification
Verify user identities with document verification and biometric authentication.
Rate Limiting
Protect against brute force attacks with intelligent rate limiting and request throttling.
Webhook Integration
Receive real-time verification events and status updates via webhooks.
Analytics Dashboard
Monitor verification success rates, channel performance, and user behavior.
Reach Users Where They Are
Deliver verification codes through multiple channels for maximum reach and reliability.
SMS
Deliver OTPs via SMS to any phone number globally.
Send OTPs via WhatsApp for instant verification.
Deliver OTPs via email with customizable templates.
Voice
Speak OTPs via voice call for accessibility.
Secure Every Interaction
From sign-up to transactions—use cases for every security need.
User Sign-Up & Login
Secure user registration and authentication with OTP verification.
Transaction Authentication
Verify high-value transactions and payments with additional security.
Account Recovery
Securely recover lost accounts with multi-factor verification.
KYC & Onboarding
Verify customer identities during onboarding for compliance and trust.
API Access Control
Secure API access with two-factor authentication and verification.
Event Access
Verify attendees and control access to events, webinars, and conferences.
Built-In Fraud Prevention
Our verification API includes advanced security features to protect against fraud, brute force attacks, and unauthorized access.
Security Overview
All systems operational
Rate Limiting
Active
IP Blocking
Active
Geo-Fencing
Active
Device Check
Active
OTP Expiration
30s-10m
Audit Log
Enabled
Simple, Transparent Pricing
Pay only for what you use. Volume discounts available for high-volume verifications.
Starter
Perfect for startups and testing
- Up to 1,000 verifications/month
- SMS & Email channels
- Basic OTP generation
- Email support
- API access
Business
Ideal for growing businesses
- Up to 10,000 verifications/month
- All channels (SMS, WhatsApp, Email, Voice)
- TOTP support
- Fraud prevention
- Priority support
- Analytics dashboard
- Webhook integration
Enterprise
For large organizations
- Unlimited verifications
- Identity verification (document)
- 24/7 dedicated support
- SLA guarantee (99.99%)
- Dedicated account manager
- Custom integrations
- Advanced security
Implement Verification in Minutes
Our Verification API is designed for simplicity. Start verifying users with just a few lines of code.
// Send and verify OTPs with Sendexa
import { Verify } from 'sendexa-verify';
const client = new Verify({
apiKey: 'your-api-key',
});
// Send an OTP via SMS
const response = await client.verify.send({
to: '+233201234567',
channel: 'sms',
length: 6,
expiration: 300, // 5 minutes
});
console.log('OTP sent:', response.id);
// Verify the OTP
const result = await client.verify.check({
requestId: response.id,
code: '123456',
});
if (result.verified) {
console.log('User verified successfully!');
} else {
console.log('Invalid OTP code');
}99.9%
Success Rate
4+
Channels
5s
Avg. Delivery
10,000+
Businesses
Frequently Asked Questions
Everything you need to know about our Verification API.
What is the Verification API?
The Verification API allows you to send one-time passcodes (OTPs) via multiple channels (SMS, WhatsApp, Email, Voice) to verify user identities, transactions, and access.
How does OTP generation work?
Our API generates unique, time-limited passcodes. You can customize the length (4-8 digits), expiration time (30s - 10min), and format (numeric, alphanumeric).
What channels are supported?
We support SMS, WhatsApp, Email, and Voice calls. You can choose the channel(s) that work best for your users and use case.
How do you prevent fraud?
We implement multi-layer fraud prevention including velocity checking (rate limiting), geo-location analysis, device fingerprinting, and IP reputation scoring.
What is TOTP support?
TOTP (Time-Based One-Time Password) allows you to integrate with authenticator apps like Google Authenticator, Authy, and Microsoft Authenticator.
Can I customize the OTP message?
Yes! You can customize the message template, branding, and language. We support multiple languages for global users.
Is the Verification API secure?
Yes. All data is encrypted in transit and at rest. We comply with GDPR, SOC2, and other security standards. OTPs are generated securely and expire automatically.
How fast are OTPs delivered?
OTPs are typically delivered within 5-10 seconds via SMS, instantly via WhatsApp, and within seconds via Email and Voice. Delivery times vary by channel and carrier.
Ready to Secure Your Users?
Start verifying users today with our multi-channel verification API. Get started with a free trial.