WhatsApp Business,
without the aggregators.
Direct WhatsApp Business Platform integration with template management, rich media, session messaging, and automatic SMS fallback — all behind the same send0 SDK as email.
import { Send0 } from 'send0';
const send0 = new Send0(process.env.SEND0_API_KEY!);
// Shipping after Email GA
await send0.whatsapp.send({
to: '+14155551234',
template: 'order_confirmation',
variables: {
name: 'Jane',
order_id: '#9921',
},
fallback: { channel: 'sms' },
});What's planned
Every piece of the WhatsApp API,
wrapped in the same send0 ergonomics.
Same SDK shape as email. Same idempotency semantics. Same signed webhooks. We refuse to make you learn a second API for a second channel.
WhatsApp Business Platform
Direct integration with Meta's WhatsApp Business Platform — no third-party aggregators, no middleman markup.
Template management
Create, submit, and track template approvals from the dashboard or API. We surface WhatsApp's cryptic rejection reasons in plain English.
Rich media & interactive
Send images, PDFs, videos, location pins, and interactive buttons. Everything the WhatsApp Cloud API supports, ergonomically wrapped.
Session messaging
Reply inside the 24-hour customer service window with free-form messages — no template required, full rich-text support.
Delivery + read receipts
Signed webhooks for sent, delivered, read, and failed events. Know exactly when and whether your message was seen.
Automatic SMS fallback
If WhatsApp delivery fails or the recipient is not on WhatsApp, automatically fall back to SMS with the same message body.
Two-way conversations
Inbound webhooks for replies and button clicks. Route conversations to your product, your agents, or your LLM — your choice.
Global phone verification
Built-in number verification, country-level routing, and region-aware compliance rules. One API, 180+ countries.
Localized templates
Store a template once, ship it in 40+ languages. We resolve the right locale per recipient at send-time.
What we're shipping,
and what comes next.
We publish the WhatsApp roadmap in the open. No promises — just a live read of what's being built, what's scheduled, and what's still a sketch.
Common questions
The short version,
as of today.
Different questions? Email hello@send0.dev — a human founder will reply.
When will WhatsApp ship?
After Email hits general availability. We're targeting a private preview with a small cohort of customers later this year, with general availability to follow. Email stability comes first.
Will I need my own Meta Business Manager?
Yes. The WhatsApp Business Platform requires a verified business, and that verification belongs to you. We handle everything else — template approvals, phone number provisioning, webhooks, and billing — through our dashboard.
How is pricing going to work?
Per-session, not per-message. You pay the WhatsApp conversation fee (passed through at cost) plus a small platform fee. No seat pricing, no minimums, no hidden markup.
What happens if a number isn't on WhatsApp?
With fallback enabled, we automatically route the message to SMS. You get one webhook, one billing line, one mental model — the channel is an implementation detail.
Built on the WhatsApp
Business Platform. No middlemen.
No aggregator reselling throughput. No hidden fees. No opaque template queues. Your business verification, your phone number, your templates — we just make them programmable.
Get early access
Be on the shortlist when
WhatsApp goes live.
Waitlist members get the first batch of invites, onboarding from the founding team, and locked-in early-access pricing.
Shipping priority: email → WhatsApp → SMS.