---
title: Zavu
description: SMS, WhatsApp, Voice, Email and Telegram: every channel through one integration, routed intelligently and billed at cost.
locale: en
source: https://www.zavu.dev/en
content_type: homepage
language: en
---

# One API for all your messages.

SMS, WhatsApp, Voice, Email and Telegram: every channel through one integration, routed intelligently and billed at cost.

New: AI voice agents that answer, resolve, and hand off to a person.

2K A2P messages included in plan. Pay-as-you-go fees still apply. · No credit card required

```bash
npx skills add zavudev/zavu-skills
```

- **Get your API key:** https://dashboard.zavu.dev
- **Docs:** https://docs.zavu.dev
- **SDKs:** https://docs.zavu.dev/sdks

## Many channels. One API.

SMS, WhatsApp, Voice, Email, Telegram: the channels your users already use, all through a single Zavu API. One integration, one webhook, one bill.

- **WhatsApp** — Rich messaging, media, templates, and the 24-hour window.
- **SMS & Voice** — Global SMS and voice agents, billed at carrier cost.
- **Email** — Transactional and marketing email from the same API.
- **Facebook Messenger** — Messages from your Facebook Page and Marketplace, answered by the same agent.
- **Telegram & more** — Plus Instagram and RCS as they roll out.

## Build conversations, not infrastructure.

- **1 API — One integration.** SMS, WhatsApp, Voice, Email, Telegram: one SDK, one webhook.
- **3 min — Faster shipping.** Production SDKs in five languages. First message in minutes.
- **30-80% — Smart routing savings.** ML picks the cheapest channel per message, platform-wide.
- **100% — Full observability.** Delivery, cost and latency for every message. One view.
- **Smart fallback, zero code.** WhatsApp fails, Zavu falls back to SMS automatically. No retry logic.
- **Direct support for everyone.** Real human support for every customer, Monday to Friday. No tiers, no ticket queues.

## Every channel. One programmable flow.

Zavu connects voice, WhatsApp, SMS, email, webhooks, agents and humans into one communication layer. Route it, inspect it, automate it, and hand off to a person when it matters.

- **Recover missed intents** (Missed call) — A missed call or unanswered message triggers an agent follow-up, or a template that reopens the WhatsApp 24-hour window.
- **Qualify leads** (WhatsApp reply) — An AI agent qualifies the lead across channels: a flow collects the details, a tool enriches them from your systems.
- **Escalate to humans** (Inbound lead) — When it matters, a transfer step hands the conversation to a person, with the full context preserved.
- **Sync your backend** (Webhook event) — Every outcome (delivered, replied, resolved) is pushed to your backend via webhooks, or runs a Zavu Function on the event.

## You decide how to build.

Write it yourself, or let AI do the work. Either way, the tools are one command away.

### Write it yourself

Typed, production-ready SDKs in five languages, one unified API. Install, authenticate, send.

```bash
npm i @zavudev/sdk
# pip install zavudev
# go get github.com/zavudev/sdk-go
```

```ts
import Zavu from "@zavudev/sdk"

const client = new Zavu({ apiKey: process.env.ZAVU_API_KEY })

await client.messages.send({
  to: "+15551234567",
  channel: "auto", // smart routing
  content: { type: "text", text: "Hello from Zavu" },
})
```

### Let AI do the work

Hand the building blocks to your coding agent, or run them fully managed on Zavu.

- **Skills** — Teach your coding agent (Claude, Cursor and more) the full Zavu skillset.
- **MCP** — Expose the entire Zavu API to any MCP client.
- **Zavu Agents** — Per-sender AI agents with tools, RAG and flows.
- **Zavu Functions** — Your TypeScript, running on every event.

## Routing that pays for itself.

Zavu scores every channel by cost and deliverability, then sends through the one that wins, automatically. Watch it route live.

ML model scores cost × deliverability per channel, in real time.

## The hard part is not sending the message.

It is everything around it: retries, routing, delivery states, webhooks, agents, handoffs, logs, costs, and channel-specific edge cases.

- **Build it yourself.** Build it yourself if communication infrastructure is your product.
- **Build on Zavu.** Build on Zavu if it is what your product needs to use.

Build what makes your product different. Zavu handles the communication layer.

## Your messages, your data, always secure.

The guarantees regulated teams need: encryption, access control, reliability, and compliance built into every message.

- **Secure in transit & at rest.** TLS 1.3 for all connections. Data encrypted at rest with AES-256. No message content stored after delivery.
- **Controlled access.** Project-level API keys with scoped permissions. Webhook signature verification with HMAC-SHA256.
- **Built for reliability.** Multi-region infrastructure. Automatic failover between providers. 99.95% uptime SLA on Enterprise.
- **Full observability.** Real-time delivery logs, latency metrics, cost tracking. Data exports for compliance and audit.
- **Compliance built in.** A2P 10DLC registration, TCPA and GDPR handling, URL verification to prevent phishing, broadcast content review, and regulatory document management for international numbers.

## Start free. Scale without surprises.

Plan quotas cover the Zavu platform. WhatsApp is billed by Meta and SMS & Voice at carrier cost. Passed through, never marked up.

### Free — $0/mo

- 2,000 WhatsApp messages / mo (+ Meta’s fees)
- 3,000 emails / mo
- WhatsApp · Email · Telegram
- No credit card

### Hobby — $25/mo

_Where most teams land after Free_

- 100,000 WhatsApp messages / mo (+ Meta’s fees)
- $10 messaging credits
- 1 US phone number

### Standard — $99/mo

500k WhatsApp msgs · $40 credits · marketing + dedicated IP

### Growth — $299/mo

1M WhatsApp msgs · $100 credits · sub-accounts + support

**You pay Meta & carriers directly.** Your plan covers the Zavu platform. WhatsApp is billed by Meta, SMS & Voice by the carrier. Zavu passes both through at cost.

- WhatsApp: Meta’s rate
- SMS & Voice: carrier cost
- Zavu markup: $0.00

[Compare all features & volume pricing](https://www.zavu.dev/en/pricing)

## Before you decide.

### Why not just use a traditional messaging provider?

Traditional providers give you channel pipes: you build routing, fallback, compliance, and optimization yourself. Zavu is the intelligence layer on top: ML routing, automatic fallback between channels, built-in compliance, and AI agents, all through one API.

### Do I have to rewrite everything to switch?

No. Migration is incremental. Start with one call, POST /v1/messages: route new traffic through Zavu while your existing setup keeps handling legacy flows, then adopt the rest of the API (templates, agents, broadcasts, functions) as you go. Sending 10k+ a month? Our team migrates you for free, hands-on.

### Is there lock-in or a long-term contract?

Zero lock-in. Cancel anytime. Downgrades take effect at the end of the billing period. Your credit balance is preserved and you can export all data via the API. No termination fees, no gotchas.

### How fast can I actually integrate?

Most teams send their first message in under five minutes. Install the SDK (npm, pip, go get), set your API key, call messages.send(). That’s it.

### Is it compliant enough for regulated messaging?

10DLC registration and campaign vetting for US SMS, URL verification to prevent phishing, broadcast content review, opt-in requirements for email, and regulatory document management for international numbers. Built in.

### Do I need multiple channels for Zavu to be worth it?

No. Zavu works just as well with a single channel: send SMS, WhatsApp, email or voice through the same API, at cost, with no markup. And when you want to add another channel, there is no new integration project: change the channel parameter and you're done.

## Your first message is one API call away.

Free to start, no credit card. Every channel through one API, billed at cost, never a markup.

- **Start for free:** https://dashboard.zavu.dev
- **Read the docs:** https://docs.zavu.dev
- **API reference:** https://docs.zavu.dev
- **Status:** https://status.zavu.dev
- **Contact:** https://www.zavu.dev/en/contact-us
- **llms.txt:** https://www.zavu.dev/llms.txt

> Human-readable page: [https://www.zavu.dev/en](https://www.zavu.dev/en)