How this workflow fits
Add verification where it matters
An OTP step can confirm access to a phone number during account creation, help recover an account, or approve a sensitive action. Decide which actions require verification and what your application should do after a successful or unsuccessful attempt.
- Explain why the customer is being asked to verify.
- Set an expiry period appropriate to the action.
- Apply limits to requests and validation attempts.
Choose an OTP code or a WhatsApp verification link
With a code, the user receives it over WhatsApp or SMS, enters it in your app, and your backend validates it. With a link, the user opens WhatsApp and sends the prefilled message. Your backend handles the verification outcome through the configured callbacks.
- Choose SMS codes when your users need a flow that works without WhatsApp.
- Choose WhatsApp links when users can switch to WhatsApp to verify.
- Keep credentials short-lived and out of application logs.
Keep authentication under your control
Hypersender provides OTP delivery and validation capabilities; your application remains responsible for account security, session creation, abuse controls, and user recovery. Review the endpoint requirements and test edge cases such as expired codes and repeated requests.
- Never treat message submission alone as successful verification.
- Choose WhatsApp or SMS deliberately for your integration.
- Automatic fallback between channels is not implied.