Leverage the world's most popular messaging app for user verification. Higher open rates, trusted branding, and superior security compared to traditional SMS.
In today's digital landscape, security and user experience are paramount. WhatsApp OTP offers a seamless blend of both, providing a modern alternative to traditional SMS verification.
With over 2 billion active users worldwide, WhatsApp is the most ubiquitous messaging platform. Delivering One-Time Passwords (OTPs) via WhatsApp ensures that your verification messages are seen, trusted, and acted upon instantly. Unlike SMS, which can be delayed or filtered as spam, WhatsApp messages are encrypted, verified, and delivered with real-time status updates.
Why leading enterprises are switching to WhatsApp OTP
WhatsApp messages have a 98% open rate compared to 82% for SMS. This ensures your OTPs are seen immediately, reducing drop-offs during the verification process.
Messages come from a verified business account with your logo and name, building trust with your users and eliminating phishing concerns associated with random shortcodes.
Reach users anywhere in the world without worrying about carrier restrictions or international SMS delivery failures. WhatsApp works over Wi-Fi and data.
WhatsApp's renowned end-to-end encryption ensures that the OTP is visible only to the intended recipient, preventing interception and enhancing security.
Experience near-instantaneous delivery times. No more waiting for SMS gateways to process messages; WhatsApp delivers in milliseconds.
Often cheaper than international SMS, WhatsApp OTP allows for predictable pricing and significant cost savings at scale.
The user enters their phone number in your application to sign up, login, or verify a transaction.
Your server sends a request to HanuOTP's API with the user's number and the generated OTP code.
We securely deliver the message to the user's WhatsApp app instantly via our verified business API.
The user enters the code in your app, or uses our one-tap verification link to complete the process.
Integrate WhatsApp OTP into your application with just a few lines of code. Our API is developer-friendly, well-documented, and supports all major programming languages.
View Full Documentationconst axios = require('axios'); async function sendWhatsAppOTP(phone, otp) { try { const response = await axios.get('https://api.hanuotp.in/whatsapp-otp.php', { params: { apikey: 'YOUR_API_KEY', number: phone, OTP: otp } }); console.log('OTP Sent Successfully:', response.data); return response.data; } catch (error) { console.error('Error sending OTP:', error); throw error; } } // Usage sendWhatsAppOTP('919876543210', '458923');
Everything you need to know about WhatsApp OTP
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