Zavu

Send SMS, WhatsApp & Email with one unified API. Zavu auto-injects ZAVU_API_KEY into your Vercel projects.

Channels:

• SMS: Universal reach, instant delivery
• WhatsApp: Rich media, templates, buttons, reactions
• Email: Transactional.

Features:

• Smart channel selection based on cost and deliverability
• WhatsApp 24h window handling with template fallback
• Broadcast campaigns with real-time progress tracking
• Webhooks for delivery status and inbound messages

Quick Start:

1
import Zavudev from '@zavudev/sdk';
2

3
const zavu = new Zavudev(); // Uses ZAVU_API_KEY
4

5
await zavu.messages.send({
6
  to: '+14155551234',
7
  text: 'Your code is 123456'
8
});

Environment Variables Injected:

• ZAVU_API_KEY: Auto-generated project API key
• ZAVU_PROJECT_ID: Your Zavu project identifier

Message Types: Text, Image, Video, Audio, Document, Sticker, Location, Contacts, Buttons, Lists, Reactions, Templates

API Features:

• Phone validation and carrier lookup
• Contact management with channel preferences
• Broadcasts: batch 1000 contacts, real-time progress
• WhatsApp Business profile management
• Template creation and Meta approval workflow

Webhook Events: message.queued, message.sent, message.delivered, message.failed, message.inbound, conversation.new, template.status_changed

Environments: Variables injected into Production, Preview, and Development. Existing env vars preserved.

Pricing: Pay-as-you-go. First US phone number free. See zavu.dev/pricing