SMS OTP & Verification

A transactional messaging capability inside WhySMS SMS API.

Use WhySMS SMS API for signup verification, login codes, password resets, and sensitive confirmation flows without treating OTP as a separate product.

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Part of SMS API Verification codes Transactional SMS Delivery reports

Platform benefits

Why teams choose this product path inside WhySMS.

Keep authentication messaging inside the same SMS API used for alerts and notifications.
Support signup, login, password reset, and confirmation flows with one transactional channel.
Track delivery status and timing for sensitive verification journeys.
Avoid splitting OTP buying, setup, and reporting into a separate product layer.

Authentication delivery

Send login and signup codes through the same SMS API used for other transactional events.

Reporting visibility

Watch delivery status and timing for each verification workflow.

Developer readiness

Embed verification requests inside apps, account systems, and customer flows quickly.

Transactional alignment

Keep OTP next to alerts, confirmations, and service notifications in one product model.

Use cases

Where this product fits in real customer communication journeys.

User signup verification Login challenges Password reset confirmation Transaction approval workflows

Technical overview Node.js

await verifyUser({
  channel: 'sms',
  destination: '+201234567890',
  template: 'otp_login',
  code_length: 6
});

Integrations and operations

Fit this product into the systems your business already depends on.

Mobile apps Web applications Identity platforms Customer account systems

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