🔐 WhatsApp OTP for SaaS

Replace SMS OTP with WhatsApp
verification in your SaaS app

Two API calls. 15 minutes to integrate. 50% cheaper than SMS OTP, 98%+ delivery rate, zero DLT registration. Your users already have WhatsApp.

Node.js SDKPythonPHPREST APINo DLT needed₹0.14/OTP
Start integrating →API reference

Integrate in 15 minutes

Option A — OTPless (no code entry)
import { createClient } from
  '@emacrontechnologies/outreachagent';

const oa = createClient(
  process.env.OUTREACHAGENT_API_KEY
);

// 1. Init session → get wa_link
const { session_id, wa_link } =
  await oa.magicLink.init();

// 2. Show wa_link as button:
// <a href={wa_link}>Continue
//    with WhatsApp</a>

// 3. Poll every 3 seconds
const { verified, phone } =
  await oa.magicLink.status(
    session_id
  );
// verified === true → log in ✅
Option B — WhatsApp OTP (send code)
const { request_id } =
  await oa.otp.send({
    phone: '+919876543210',
    expiry: 300,
    length: 6,
  });
// OTP delivered via WhatsApp
// (auto-falls back to SMS)
Option B — Verify code
const { verified } =
  await oa.otp.verify(
    request_id,
    userEnteredOtp,
  );

if (verified) {
  // ✅ Log the user in
} else {
  // ❌ Invalid OTP
}
npm install @emacrontechnologies/outreachagent

Why switch from SMS OTP?

Cost per OTP

SMS₹0.45–₹0.68
WhatsApp₹0.14–₹0.45

Delivery rate

SMS82–88%
WhatsApp97–99%

DLT registration

SMSRequired (days)
WhatsAppNot required
Read full cost breakdown →

Get your API key and send your first OTP in 15 minutes

Free plan includes 500 OTPs/month. No credit card required.

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