Built for engineers
An email API that
respects your time
TypeScript SDK, React Email, sub-30ms latency, signed webhooks, and an MCP server for AI agents. No legacy SOAP endpoints. No confusing dashboard. Just email that works.
Send an email in 10 lines
import { Sendbound } from 'sendbound';
import { WelcomeEmail } from '@/emails/Welcome';
const sb = new Sendbound(process.env.SB_KEY);
const { id } = await sb.emails.send({
from: 'hello@yourapp.com',
to: user.email,
subject: 'Welcome to the team 🎉',
react: <WelcomeEmail name={user.name} />,
});
console.log('Sent:', id); // em_01j...DX details that matter
Sub-30ms API p50
Your users never wait for email delivery.
React Email native
Server-render React components as email HTML — no extra build step.
CI/CD-friendly keys
Scoped API keys per environment. Rotate without downtime.
Webhook verification
HMAC-signed events. Reject spoofed requests in one line of code.
OpenAPI + type-safe SDK
Full OpenAPI spec, auto-generated types, IDE autocomplete.
MCP server for AI agents
Let your AI agents send email via Model Context Protocol.
Official SDKs
TypeScript / Node.js
npm install sendboundPython
pip install sendboundGo
go get github.com/sendbound/sendbound-goPHP
composer require sendbound/sendbound-phpRuby
gem install sendboundREST API
curl api.sendbound.comWhat you get out of the box
TypeScript SDK with full IDE autocomplete
React Email server-side rendering
OpenAPI 3.1 specification
Sub-30ms p50 send latency
HMAC-signed webhook events
Per-project scoped API keys
Rate limits visible in response headers
Idempotency keys for safe retries
MCP server for AI agent integrations
Local preview server for email templates
Real-time delivery status webhooks
99.97% uptime SLA on paid plans
Start sending in minutes
3,000 free emails/month. No credit card. Full API access from day one.
