WhatsApp OTP vs SMS OTP
SMS OTP is expensive and increasingly unreliable. Here's how WhatsApp one-time passcodes compare for login codes and 2FA.
| WhatsApp OTP | SMS OTP | |
|---|---|---|
| Cost | Flat monthly, unlimited (fair use) | Per message, adds up fast |
| Delivery | High; data-based, no carrier filtering | Carrier filtering, failed routes |
| Open rate | Very high — people live in WhatsApp | Lower, easy to ignore |
| Branding | Your business name & profile | Random sender ID / shortcode |
| Setup | Link your number, get an API key | Sender-ID approval, carrier setup |
Our API generates, delivers and verifies the code for you — see the WhatsApp OTP API.
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