One API.
Email + WhatsApp.

npm install @zindua/sdk

# .env.local
ZINDUA_API_KEY=znd_live_xxxxxxxxxxxxxxxxxxxx

// lib/zindua.ts
import { Zindua } from '@zindua/sdk';

export const zindua = new Zindua({
  apiKey: process.env.ZINDUA_API_KEY!,
});

// Email (default channel)
await zindua.send({
  to: 'user@example.com',
  template: 'welcome',
  variables: { name: 'Alex' },
});

// Same route, explicit channel:
await zindua.send({
  to: 'user@example.com',
  channel: 'email',
  template: 'welcome',
  variables: { name: 'Alex' },
});

// WhatsApp OTP (E.164 phone, no + prefix)
await zindua.send({
  to: '243812345678',
  channel: 'whatsapp',
  template: 'otp-verification',
  variables: { code: '4592', app: 'MonApp' },
});

await zindua.send({
  to: '243812345678',
  channel: 'whatsapp',
  template: 'otp-verification',
  lang: 'fr',
  variables: { code: '4592' },
});

npm install @zindua/sdk

ZINDUA_API_KEY=znd_live_xxxxxxxxxxxxxxxxxxxx

// Backend only. Never call Zindua from the browser.
const { Zindua } = require('@zindua/sdk');
const zindua = new Zindua({ apiKey: process.env.ZINDUA_API_KEY });

app.post('/api/notify', async (req, res) => {
  const { email, channel = 'email', phone, template, variables } = req.body;

  const to = channel === 'whatsapp' ? phone : email;
  const result = await zindua.send({ to, channel, template, variables });
  res.json(result);
});

// Client calls YOUR backend, not Zindua:
await fetch('/api/notify', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    channel: 'whatsapp',
    phone: '243812345678',
    template: 'otp-verification',
    variables: { code: '482910' },
  }),
});

// Pass lang from your app locale
body: JSON.stringify({
  channel: 'whatsapp',
  phone: '243812345678',
  template: 'otp-verification',
  lang: 'fr',
  variables: { code: '482910' },
})

pip install zindua

ZINDUA_API_KEY=znd_live_xxxxxxxxxxxxxxxxxxxx

import os
from zindua import Zindua

zindua = Zindua(api_key=os.environ["ZINDUA_API_KEY"])

# Email
zindua.send(
    to="user@example.com",
    template="reset-password",
    variables={"name": "Sarah", "link": "https://..."},
)

# WhatsApp
zindua.send(
    to="243812345678",
    channel="whatsapp",
    template="otp-verification",
    variables={"code": "4592"},
)

zindua.send(
    to="243812345678",
    channel="whatsapp",
    template="otp-verification",
    lang="fr",
    variables={"code": "4592"},
)

# pubspec.yaml
dependencies:
  zindua: ^1.0.0

// flutter run --dart-define=ZINDUA_KEY=znd_live_...

import 'package:zindua/zindua.dart';

final zindua = Zindua(apiKey: const String.fromEnvironment('ZINDUA_KEY'));

await zindua.send(
  to: 'customer@example.com',
  template: 'order-shipped',
  variables: {'trackingUrl': 'https://...'},
);

await zindua.send(
  to: '243812345678',
  channel: 'whatsapp',
  template: 'otp-verification',
  variables: {'code': '4592'},
);

await zindua.send(
  to: '243812345678',
  channel: 'whatsapp',
  template: 'otp-verification',
  lang: 'ar',
  variables: {'code': '4592'},
);

npm install @zindua/react-native

ZINDUA_API_KEY=znd_live_xxxxxxxxxxxxxxxxxxxx

// Call your backend; do not embed Zindua keys in the app binary.

// Your Node backend:
await zindua.send({
  to: email,
  channel: 'email',
  template: 'verify-email',
  variables: { link },
});

// Your Node backend:
await zindua.send({
  to: phone,
  channel: 'whatsapp',
  template: 'otp-verification',
  variables: { code },
});

await fetch('https://api.yourapp.com/send-otp', {
  method: 'POST',
  body: JSON.stringify({ phone, code, lang: 'fr' }),
});

# Any HTTP client

export ZINDUA_KEY="znd_live_xxxxxxxxxxxxxxxxxxxx"

# https://api.zindua.dev/v1/v1/send
# Authorization: Bearer znd_live_xxx

curl -X POST https://api.zindua.dev/v1/v1/send \
  -H "Authorization: Bearer $ZINDUA_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "user@example.com",
    "channel": "email",
    "template": "welcome",
    "variables": { "name": "Alex" }
  }'

curl -X POST https://api.zindua.dev/v1/v1/send \
  -H "Authorization: Bearer $ZINDUA_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "243812345678",
    "channel": "whatsapp",
    "template": "otp-verification",
    "variables": { "code": "4592" }
  }'

curl -X POST https://api.zindua.dev/v1/v1/send \
  -H "Authorization: Bearer $ZINDUA_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "243812345678",
    "channel": "whatsapp",
    "template": "otp-verification",
    "lang": "fr",
    "variables": { "code": "4592" }
  }'