The email service built from the ground up for developers with zero marketing bloat
Integrate transactional email into your codebase in under 60 seconds. Typed TypeScript and Python SDKs, drop-in Port 587 ESMTP relay, 10 Model Context Protocol tools, and 6,000 free monthly sends.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
import { SadaSend } from 'sadasend';
const sadasend = new SadaSend(process.env.SADASEND_API_KEY!);
// Send transactional email with full TypeScript autocompletion
const { id, status } = await sadasend.emails.send({
from: 'Developers <dev@yourdomain.com>',
to: 'user@example.com',
subject: 'Your API Key has been provisioned',
html: '<h1>API Key Ready</h1><p>Your access token is active.</p>',
tags: ['api-key-provision']
});
console.log(`Message ${id} status: ${status}`);Type-safe email dispatch using our official TypeScript SDK with automatic parameter validation and autocomplete.
Engineered for high deliverability and zero incident risk
Every layer from edge connection pooling to per-key rate limits is designed to keep critical transactional dispatches fast, reliable, and contained.
First-Class TypeScript & Python SDKs
Fully typed client libraries with complete autocomplete, runtime parameter checks, and zero heavyweight runtime dependencies.
Native Model Context Protocol (MCP)
Connect Claude, Cursor, Windsurf, and custom AI agents directly to production email with 10 hosted tools and guardrails.
Developer Sandbox Testing Mode
Test entire email pipelines in CI/CD and local development without consuming monthly quota or emailing real users.
Synchronous REST & Port 587 ESMTP
Use modern HTTP/2 REST APIs or drop smtp.sadasend.com into existing applications with universal apikey authentication.
Real-Time Webhook Event Stream
Inspect raw delivery logs, test webhooks with synthetic event triggers, and verify cryptographic HMAC payloads.
6,000 Free Monthly Sends
Generous permanent developer allowance with custom domain DKIM, webhook logs, and API access included.
SadaSend vs Bloated Marketing Automation Suites
Why developers prefer SadaSend clean engineering-first platform over complicated enterprise marketing clouds.
| Feature & Capability | SadaSend | Bloated Marketing Automation Suites |
|---|---|---|
| Developer-First API & SDK Design | Cluttered with non-developer marketing tools | |
| Hosted AI Agent MCP Server | ||
| CI/CD Sandbox Testing Mode | Requires paying for sandbox add-ons | |
| Clean Synchronous Error Messages | Vague error codes & silent failures | |
| React Email Template Support | Locked into proprietary drag-and-drop builders | |
| Permanent Free Developer Tier | 6,000 sends forever | Trial expiration or 100/day limit |
Start with 3,000 emails every month at zero cost
No artificial paywalls on security. Unlike legacy providers that reserve recipient allowlists or dedicated IP pools for high enterprise tiers, every SadaSend account receives full safety controls from day one.
Everything you need to know about email service for developers
Clear, transparent answers on deliverability, API authentication, and rate limits.
Related developer guides and architectural tutorials
Explore step-by-step production implementation blueprints, benchmarks, and protocols.
Official Client SDKs (TypeScript & Python)
Official zero-dependency client SDKs for SadaSend. TypeScript and Python packages are live on npm and PyPI with typed results and auto-idempotency.
REST API Reference & Endpoints
Complete REST API reference for sending emails, managing API keys, tracking delivery events, and configuring recipient allowlists with low latency.
Model Context Protocol (MCP) Server
Connect AI agents directly to SadaSend via Model Context Protocol (MCP). Inspect tools, configure execution scopes, and enable human approval holds.
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