Type-safe Node.js & TypeScript email dispatch built for production
Official TypeScript SDK for Node.js backends, Express, NestJS, and Fastify. Built-in exponential backoff, cryptographic webhook verification, and per-key allowlists.
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);
// Dispatch typed transactional email with promise handling
const { id, status } = await sadasend.emails.send({
from: 'alerts@yourdomain.com',
to: 'ops@company.com',
subject: 'Database Backup Completed',
text: 'Production snapshot #904 finished in 42 seconds.',
tags: ['backup', 'ops'],
});
console.log(`Dispatched ID: ${id} with status: ${status}`);Official Node.js client with complete TypeScript declarations, auto-retries, and connection pooling.
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.
Strict TypeScript Definitions
Full IntelliSense autocompletion for requests, responses, headers, tags, and webhook payloads.
Automatic Exponential Backoff
Resilient HTTP client automatically retries transient network interruptions with jittered backoff.
HMAC Webhook Verification
Built-in sadasend.webhooks.verify() helper prevents forged event payloads and replay attacks.
Dual ESM & CommonJS Bundles
Native support for modern import syntax as well as legacy require() CommonJS projects.
Zero Native Addon Dependencies
Pure JavaScript/TypeScript implementation with zero node-gyp C++ compilation headaches.
Environment Variable Detection
Automatically discovers process.env.SADASEND_API_KEY for zero-boilerplate initialization.
SadaSend vs Generic Node HTTP / Nodemailer
Compare official type-safe SDK with unmaintained legacy SMTP drivers.
| Feature & Capability | SadaSend | Generic Node HTTP / Nodemailer |
|---|---|---|
| Complete TypeScript Definitions | Community @types only | |
| HMAC Webhook Verification Helper | ||
| Automatic Retry on 429 / 5xx | Manual try/catch loops | |
| Staging Domain Allowlists | ||
| low-latency Edge Response | 150 - 400ms | |
| Free Monthly Sends | 6,000 / mo forever | Requires paid server |
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 Node.js email API
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.
SMTP relay & framework integrations
Connect existing applications, WordPress, Supabase, Laravel, Django, and Nodemailer to SadaSend via standard SMTP relay with zero code changes.
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