Start in one request
Create a verification and let YouYi handle code generation, expiry, and retry windows.
OTP
YouYi Verify
Add secure one-time passwords with managed templates, fraud controls, locale-aware delivery, and automatic channel fallback.
Managed OTP workflow Fraud velocity controls SMS and voice fallback
Reduce abuse
Destination, IP, and device velocity rules block repeat attacks before they create spend.
Improve completion
Localized templates and route fallback help legitimate users receive codes quickly.