FAQ
WhatsApp OTP FAQ
Practical answers about WhatsApp OTP API integration, keys, languages, the free plan, and production limits.
What is WhatsApp OTP API?
WhatsApp OTP API lets your backend send verification messages through a connected WhatsApp session using the DNZ engine endpoint /api/send-otp.
How do I connect my app?
Create an account, connect WhatsApp with QR, generate an API key, then call /api/send-otp from your backend with apiKey, number, and message.
How long does setup take?
For a normal website or app, setup usually requires creating the account, connecting WhatsApp, generating an API key, and adding one backend request.
Which languages are supported?
The API sends the message text you provide, so your backend can send Arabic, English, or any Unicode text supported by WhatsApp.
Is there a free plan?
Yes. The current free plan is available for testing with 50 OTP messages daily, one WhatsApp session, and a 30-second minimum interval.