Stop fighting messaging infrastructure. Start shipping.
Unified Multi-Channel Messaging API
SMS, WhatsApp, Telegram, Email, Voice — One API
zavu.dev
Sending a single SMS is easy. Building messaging that works at scale across channels and geographies...
Deliverability is a moving target — carrier rules change without notice
Each channel = different API, auth model, rate limits, error codes
Compliance scales faster than your team — TCPA, GDPR, A2P 10DLC...
Cost compounds quietly — per-message fees, number fees, failed message costs
What worked yesterday stops working today
Your team finds out from customer complaints.
Not from monitoring.
There's a better way.
Stripe made payments one line of code.
Vercel made deploy one git push.
Zavu made ALL communications one API.
✓One POST /v1/messages handles SMS, WhatsApp, Telegram, Email, Voice
✓Same authentication, same error handling, same webhooks
✓Add a new channel? Configuration change, not a rewrite.
Build once. Communicate everywhere.
40%
messaging cost reduction with ML-powered routing
SMS + WhatsApp + Telegram + Email + Voice
Routing intelligence is a network effect — every delivery across all customers makes your routing smarter.
Auto Fallback
WhatsApp fails? SMS fires automatically. No retry logic in your code.
5-Minute Setup
npm install @zavudev/sdk, add API key, send first message.
Production SDKs
Python, Node.js, Ruby, Go, Java — idiomatic, typed, battle-tested.
AI Agents
Attach an AI agent to any sender. Handle inbound with any LLM.
Broadcast
AI content review + cost reservation before a single message sends.
Phone Introspection
Validate numbers and check channel availability before you send.
One integration. Zero messaging infrastructure maintenance.
Companies Where Messaging Is Critical
If failed messages mean lost revenue, lost customers, or compliance risk.
E-Commerce
Order updates, shipping alerts, re-engagement campaigns
SaaS Platforms
Auth codes, alerts, multi-tenant messaging
Fintech
Fraud alerts, transaction notifications, audit trails
Healthcare
Appointment reminders, patient communication
Marketplaces
Buyer/seller messaging, delivery tracking
Developer Tools
White-label messaging via sub-accounts
Every missed notification is a support ticket, a lost sale, or a compliance incident.
From companies that switched to Zavu
40%
fewer failed deliveries
60%
messaging cost reduction
68%
read rate on WhatsApp (vs 15% on SMS)
Engineering impact
Integration in days, not quarters
3 channel integrations consolidated into 1 SDK — zero dedicated messaging headcount.
One API.
Every channel.
Intelligence that improves over time.
Let's talk about your messaging needs.
Book a 15-min call