Faster, cheaper, higher-delivery OTPs

We deliver one-time passwords over WhatsApp with a simple API, SMS fallback, rate handling and security — so codes arrive instantly and reliably.

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The challenge

Why this matters

SMS one-time passwords are expensive, sometimes slow and don’t always arrive — costing you sign-ups and frustrating users at the worst moment.

  • Costly SMSPer-message SMS pricing for OTPs adds up fast at scale.
  • Slow or failed deliveryDelayed or undelivered codes block users at login or checkout.
  • Security concernsOTP flows need rate limits and safeguards done correctly.
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What we deliver

Everything included

  • WhatsApp OTP templates approved for authentication
  • A simple API to send codes from your app
  • SMS fallback when WhatsApp isn’t available
  • Rate handling to prevent abuse and spikes
  • Security best practices baked into the flow
How it works

A clear path to live

1Set up OTPWe create authentication templates and the sending API.
2Add fallbackWe configure SMS fallback for full coverage.
3Secure itWe add rate limiting and security safeguards.
4IntegrateWe connect OTP delivery into your login and checkout.
Capabilities

Key features

Instant delivery

Codes arrive on WhatsApp in seconds.

Lower cost

Often cheaper than SMS, especially at volume.

SMS fallback

Falls back to SMS so every user still gets a code.

Secure by design

Rate limits and safeguards protect the flow.

Outcomes

Results you can measure

Higher
OTP delivery rates
Lower
cost than SMS at scale
Who it’s for

Built for teams like yours

Finance E-commerce Software Companies Insurance Healthcare
Works with

Fits your stack

Custom APIs Mobile Apps Websites Payment Gateways
Why Whatsoza

Why teams choose us

Cheaper at scale

WhatsApp OTPs can cut your authentication costs.

Better delivery

Codes arrive faster and more reliably than SMS.

Built securely

Rate limiting and safeguards protect every flow.

FAQ

Questions, answered

At volume it usually is, and delivery tends to be faster and more reliable too.
We configure SMS fallback so users without WhatsApp still receive their code.
We provide a simple API, so sending an OTP is a single call from your app or backend.
Yes — we build in rate limiting, expiry and safeguards following authentication best practices.
Often combined with

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Ready for faster, cheaper, more reliable OTPs?

Book a free, no-obligation consultation with a real WhatsApp specialist — or start a chat with us right now.

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