WhatsApp OTP: verify users faster and cheaper
Send WhatsApp OTP codes for login, registration, password reset, and transaction verification. Users receive the code in an app they open every day — high readability, lower cost than SMS, and a compact API integration.
Read, not ignored
Your users live on WhatsApp. The OTP arrives where they are already active every day, opened far faster than SMS or email.
Cheaper than SMS
No varying per-carrier SMS rates. Verification costs are lower and easier to predict at scale.
Fast integration
Two endpoints: send OTP and verify. Drop it into PHP, Node.js, Laravel, and other stacks in minutes.
- 1. Send OTP — call the API with the destination number; the code is sent via WhatsApp.
- 2. User enters the code — in your login/registration form.
- 3. Verify — call the verify endpoint and get a verified number identity.
OTP codes are stored hashed and expire automatically, so they are safe for passwordless login and transaction verification.
# Send WhatsApp OTP
POST https://api.loginwa.com/api/v1/auth/start
{
"phone": "+6281234567890"
}
# Verify the code
POST https://api.loginwa.com/api/v1/auth/verify
{
"session_id": "...",
"otp_code": "123456"
}Sign up free, get your API key, and send your first OTP in minutes. Upgrade any time (instant QRIS for Indonesian payers).
Start freeWhat is WhatsApp OTP?
WhatsApp OTP is a one-time password sent via WhatsApp message to verify a WhatsApp number or log a user in. Because it arrives in an app people open every day, WhatsApp OTP has higher readability than SMS or email.
Is WhatsApp OTP cheaper than SMS OTP?
Usually yes. WhatsApp OTP is not billed at varying per-carrier SMS rates, so costs are lower and more predictable, especially at high volume.
How do I send WhatsApp OTP through the LoginWA API?
Just call the LoginWA API endpoint with the destination number, and the system sends the OTP code via WhatsApp. After the user enters the code, call the verify endpoint to validate it. You can integrate with PHP, Node.js, Laravel, and any other language that can make HTTP requests.
Is the OTP secure and does it expire?
Yes. OTP codes are stored hashed and expire automatically after a set period, so they are secure for WhatsApp number verification and login.
Can it be used for passwordless login?
Yes. Many LoginWA users use WhatsApp OTP for passwordless login, registration, password reset, and transaction verification.