Verify Users Instantly via WhatsApp OTP
Replace SMS OTPs with secure, high-delivery WhatsApp one-time passwords. Boost verification rates, reduce fraud, and deliver a frictionless login experience.
Why Choose WhatsApp OTP Over SMS?
Deliver faster, more secure, and cost-effective one-time passwords through WhatsApp.
Higher Delivery Rates
WhatsApp OTPs achieve up to 99% delivery vs. 70–80% with traditional SMS.
Instant Delivery
OTPs are delivered in real-time with millisecond latency for seamless user experiences.
Cost Effective
Reduce verification costs significantly by switching from SMS to WhatsApp OTPs.
Fraud Prevention
End-to-end encryption and WhatsApp's account security reduce SIM-swap and spoofing risks.
Everything You Need for WhatsApp OTP
A complete OTP delivery infrastructure built on WhatsApp Cloud API for reliability and scale.
Simple API Integration
Integrate WhatsApp OTP into your app in minutes with our REST API and SDKs.
Custom OTP Templates
Use Meta-approved message templates with your brand name and personalized text.
Auto-Expiry & Retry
Set OTP expiry windows and enable automatic retry logic for undelivered messages.
Real-Time Delivery Logs
Monitor every OTP sent, delivered, read, and verified from a single dashboard.
Send Your First WhatsApp OTP in 4 Steps
Get up and running with WhatsApp OTP verification in minutes.
01
Integrate the API
Connect duochat's OTP API to your app using our REST API or JavaScript/TypeScript SDK.
02
Create OTP Template
Design a Meta-approved WhatsApp OTP message template with your brand name in minutes.
03
Send OTP to User
Trigger an OTP message to the user's WhatsApp number upon login or verification.
04
Verify & Authenticate
Validate the code entered by the user and complete secure authentication instantly.
duochat OS
Verify Users in Seconds with WhatsApp OTP
Deliver one-time passwords directly to your users' WhatsApp — no SMS delays, no interception. Track every OTP sent, delivered, and verified from one powerful dashboard.
“After switching to WhatsApp OTP with duochat, our verification success rate jumped from 74% to 97%. The integration took less than a day.”
Ready to Replace SMS OTP with WhatsApp?
Send secure, high-delivery OTPs via WhatsApp. Start free today.
Get started today
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