API Operational

One single API.
Every message.

SMS, WhatsApp, Telegram, Voice, Email — one integration. ML-powered routing picks the cheapest channel per message.

500Backed by 500 Global
POST /v1/messagesML Routercost: $0.005WhatsAppSMSTelegramVoiceEmailInstagramFacebook

Built for teams that move fast

SaaSE-commerceFintechHealthcareAI ProductsMarketplaces

Platform

Every channel, one control plane.

Monitor, route, and optimize every message from a single dashboard. Real-time logs, delivery analytics, and cost tracking across all channels.

Sarah ChenWhatsAppdelivered$0.003
Carlos MuñozSMSdelivered$0.008
Emily WatsonEmailsent$0.001
James OliverWhatsAppdelivered$0.004
Ana LópezVoicequeued

Why Zavu

Ship messaging, not infrastructure.

zavu.status --live

1 API

One integration

SMS, WhatsApp, Telegram, Voice, Email. One SDK, one webhook format, one dashboard.

WhatsApp
SMS
Telegram
Voice
Email

3 min

Faster shipping

Production-ready SDKs in 5 languages. From zero to first message in minutes, not weeks.

1import Zavu from '@zavudev/sdk'
2const z = new Zavu('sk_...')
3await z.messages.send({to:'+1...',text:'OK'})
0:00

30-80%

Smart routing savings

ML picks the cheapest channel per message. Auto-fallback if the primary channel fails.

US SMS
Traditional$$
Zavu$
~0% saved

100%

Unified observability

Delivery receipts, cost tracking, latency metrics. Every message, every channel, one view.

Direct support for every customer

We're the only messaging platform that gives direct human support to ALL customers — not just enterprise. No tiers. No ticket queues. Real engineers, real answers. Migrating from another platform? We'll help.

For every team

One platform, every workflow.

Developers

SDKs in 5 languages, consistent API shape, typed responses, sandbox testing. Ship messaging without reading carrier docs.

Product & Ops

Dashboard with real-time delivery metrics, cost analytics, contact management, and broadcast campaigns. No code required.

AI-native products

Built-in AI agents with RAG, tool-use, and multi-turn conversations. Connect your LLM or use ours — per sender, per channel.

Resilience & Scale

Auto-fallback between channels, retry logic, rate limiting, 10DLC compliance. Built to handle millions of messages reliably.

The Stack

Everything connects.

From channel primitives to AI agents — a complete messaging stack that grows with you. No glue code, no vendor lock-in.

Channels

SMSWhatsAppTelegramEmailVoiceInstagram

Developer Workflow

REST APINode.js SDKPython SDKGo SDKWebhooksSandbox

Reliability Layer

ML RoutingAuto FallbackRate Limiting10DLCURL Verification

Use Cases

OTP / AuthNotificationsBroadcastsAI AgentsSupport

Developer Experience

Three lines to send.

ML handles channel selection, retries, fallbacks, and compliance. You write three lines.

send.ts
1import Zavu from '@zavudev/sdk';
2 
3const zavu = new Zavu({ apiKey: process.env.ZAVU_API_KEY });
4 
5const msg = await zavu.messages.send({
6 to: "+14155551234",
7 text: "Your order has shipped!"
8});
9 
10console.log(msg.id, msg.status);
11// jd7x2k3m4n queued
Consistent API shape across all channels
Type-safe SDKs with full IDE autocomplete
Sandbox mode for testing without real sends
Webhook signatures for secure event handling
Idempotency keys to prevent duplicate sends

Use cases

Built for what you need.

AI assistants

Build conversational AI on WhatsApp, Telegram, or SMS. Multi-turn, context-aware, with knowledge bases and tool-use.

Support automation

AI agents that handle customer questions 24/7. RAG-powered, with real-time data lookups and smart escalation.

A2P notifications

Order confirmations, shipping updates, appointment reminders. Delivered on the channel your users prefer.

OTP & verification

One-time passwords via SMS, WhatsApp, or Voice. Template-based authentication with auto-expiry.

Multi-channel delivery

Same message, best channel. ML routing picks the optimal path. Auto-fallback keeps delivery rates high.

Alerts & lifecycle

Broadcasts for marketing campaigns, drip sequences, re-engagement. Schedule, review, and send at scale.

Switching to Zavu took our messaging bill from $5,000 to $500 a month. Same volume, same channels, 90% less cost.

Nely.ai

AI-powered customer engagement platform

Pricing

Only pay for what you use.

No tiers. No commitments. One price per active contact, plus provider costs at zero markup.

Usage-based

$0.005/ active contact / month

+ provider pass-through at cost.

Unlimited messages
SMS, WhatsApp, Telegram, Email, Voice
AI agents & conversational flows
Broadcasts & bulk messaging
Dedicated support from our team
Webhooks, SDKs & full API access

Sending at scale?

Volume discounts, custom SLAs, dedicated infrastructure, SSO/SAML, and a direct line to our engineering team.

Talk to us

Switching providers?

Sending 10k+ messages a month? We'll migrate you for free with hands-on technical assistance. Zero downtime.

Schedule free migration

Trust & Security

Enterprise-grade security.

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. 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.

FAQ

Common questions.

One single API.
Every message.

Start sending messages in minutes. Free tier included. No credit card required.

APIRouterSMSWA
Zavu - One API. Every Message.