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.
npx skills add zavudev/zavu-skills2K A2P messages included in plan. Pay-as-you-go fees still apply. · No credit card required
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.
Agent playground
Ask.
Inspect.
Build.
Talk to an agent built on Zavu to understand the API, the skills, the channels and the events behind every conversation.
Start with a question.
Inspect it like a developer.
Flow layer
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
A missed call or unanswered message triggers an agent follow-up — or a template that reopens the WhatsApp 24-hour window.
Qualify leads
An AI agent qualifies the lead across channels: a flow collects the details, a tool enriches them from your systems.
Escalate to humans
When it matters, a transfer step hands the conversation to a person — with the full context preserved.
Sync your backend
Every outcome — delivered, replied, resolved — is pushed to your backend via webhooks, or runs a Zavu Function on the event.
Developer experience
You decide how to build.
Write it yourself, or let AI do the work — either way, the tools are one command away.
Let AI do the work
Hand the building blocks to your coding agent, or run them fully managed on Zavu.
Teach your coding agent — Claude, Cursor and more — the full Zavu skillset.
Expose the entire Zavu API to any MCP client.
Write it yourself
Typed, production-ready SDKs in five languages, one unified API. Install, authenticate, send.
import Zavudev from "@zavudev/sdk"
const zavu = new Zavudev()
const { message } = await zavu.messages.send({
to: "+14155551234",
text: "Your order #1234 has shipped.",
// channel defaults to "auto" — smart routing
})Zavu Agents
Per-sender AI agents with tools, RAG and flows.
Zavu Functions
Your TypeScript, running on every event.
Why Zavu
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. Migrating? We'll help.
Powering messaging for startups and scale-ups globally
Intelligent routing
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.
Session savings
ML model scores cost × deliverability per channel, in real time.
Build vs buy
The hard partis not sendingthe message.
It is everything around it: retries, routing, delivery states, webhooks, agents, handoffs, logs, costs, and channel-specific edge cases.
Build it yourself
15 systemsYou own — and keep alive — all of this.
Build it yourself if communication infrastructure is your product.
Build on Zavu
1 layerOne layer. Extensible primitives.
Build on Zavu if it is what your product needs to use.
Build what makes your product different.
Zavu handles the communication layer.
Security & compliance
Your messages, your data, always secure.
The guarantees regulated teams need — encryption, access control, reliability, and compliance built into every message.
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.
Standards
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.
Pricing
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.
- 2,000 WhatsApp messages / mo+ Meta’s fees
- 3,000 emails / mo
- WhatsApp · Email · Telegram
- No credit card
Where most teams land after Free
- 100,000 WhatsApp messages / mo+ Meta’s fees
- $10 messaging credits
- 1 US phone number
500k WhatsApp msgs · $40 credits · marketing + dedicated IP
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.
FAQ
Before you decide.
The objections worth raising — answered straight.
Still have questions? Talk to us
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.
Built for teams across
Your first messageis one API call away.
Free to start, no credit card. Every channel through one API — billed at cost, never a markup.