First-class React Email rendering & edge delivery with zero CSS quirks
Design emails using standard React JSX components, Tailwind CSS, and TypeScript. Dispatch with low latency and flawless Outlook & Gmail rendering.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
import { Body, Container, Head, Html, Text } from '@react-email/components';
import { render } from '@react-email/render';
import { SadaSend } from 'sadasend';
const sadasend = new SadaSend(process.env.SADASEND_API_KEY);
const emailHtml = await render(
<Html>
<Head />
<Body style={{ fontFamily: 'sans-serif', backgroundColor: '#f6f9fc' }}>
<Container style={{ padding: '20px', backgroundColor: '#ffffff' }}>
<Text>Welcome aboard! Your project setup is complete.</Text>
</Container>
</Body>
</Html>
);
await sadasend.emails.send({
from: 'team@yourdomain.com',
to: 'user@example.com',
subject: 'Welcome to SadaSend',
html: emailHtml,
});Complete JSX email rendering pipeline compiling directly to battle-tested HTML table structures.
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.
Standard React Component Ecosystem
Use buttons, containers, markdown, and Tailwind styling from the official @react-email library.
Outlook Word Engine Resilient
Automatically outputs MSO conditional comments so table layouts never shatter in Windows Outlook.
Gmail 102 KB Clipping Guard
High-efficiency inline CSS minimizes HTML byte weight, keeping messages under Gmail clipping limits.
TypeScript Props & Validation
Enforce strict type checking on template props to catch missing customer variables before sending.
Dark Mode Support
Seamlessly switch between light and dark palettes with CSS media queries and client-safe overrides.
Instant Preview Integration
Develop locally with the React Email preview server, then dispatch to production via SadaSend REST API.
SadaSend vs Legacy MJML / HTML String Concatenation
Compare component-driven React Email against fragile raw HTML string concatenation.
| Feature & Capability | SadaSend | Legacy MJML / HTML String Concatenation |
|---|---|---|
| Type-Safe Template Props | String interpolation only | |
| Automated Outlook MSO Fixes | Manual table hacks | |
| Gmail 102 KB Anti-Clipping | Frequent clipping issues | |
| Shared UI Component Library | ||
| Developer Staging Allowlists | ||
| Free Monthly Tier | 6,000 emails ($0) | Varies by provider |
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 React 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.
React Email Templates & Integration
How to build, preview, and send transactional emails using React Email and JSX components with zero-bleed preheaders and Outlook MSO support on SadaSend.
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.
Production React Email Deliverability: Zero-Bleed Preheaders, Outlook MSO & Gmail Clipping Defense
Rendering React Email in production? Learn how to avoid Gmail 102 KB clipping, prevent preheader snippet leakage, handle Outlook Word HTML tables, and support Apple Mail dark mode.
React Email Component Library Guide: Responsive Bulletproof Templates
Stop wrestling with nested HTML tables from 1999. Learn how to build modern, responsive transactional email components in React that render flawlessly in Outlook, Gmail, and Apple Mail.
Sending Transactional Email in Next.js 15 (App Router & React Email)
Render responsive React components to clean HTML strings and dispatch them via Next.js 15 Server Actions with zero external SMTP dependencies.
How to Implement RFC 8058 One-Click Unsubscribe Headers in React Email
Google and Yahoo require all bulk and notification senders to support RFC 8058 one-click unsubscribe. Here is how to configure HTTP POST handlers and headers in React Email.
Why your transactional email goes to spam
People assume transactional mail is exempt from filtering because it was requested. Mailbox providers do not know that, and mostly do not care.