Send transactional email in Next.js in 60 seconds with native Server Actions
First-class email client designed for Next.js App Router, React Server Components, and Vercel edge runtime. low-latency dispatch with zero cold starts.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
'use server';
import { SadaSend } from 'sadasend';
const sadasend = new SadaSend(process.env.SADASEND_API_KEY);
export async function sendWelcomeEmail(to: string, name: string) {
return await sadasend.emails.send({
from: 'onboarding@yourdomain.com',
to,
subject: `Welcome to the Platform, ${name}!`,
html: `<h1>Welcome ${name}</h1><p>Your workspace is ready.</p>`,
});
}Next.js 15 Server Action using native fetch with zero bundle bloat and automatic edge execution.
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.
Next.js 15 Server Actions
Works seamlessly inside server actions and route handlers with zero Node.js polyfill requirements.
Edge Runtime Compatible
Native global fetch implementation runs anywhere: Vercel Edge, Cloudflare Pages, Netlify, or AWS Lambda.
Zero Cold-Start Lag
Lightweight HTTP client avoids heavyweight SMTP connection handshakes that freeze serverless functions.
React Email Components
Render JSX templates directly or use raw HTML strings with automated responsive styling.
Staging Domain Guard
Local development and Vercel preview URLs automatically respect per-key recipient allowlists.
RFC 8058 Header Automation
Injects compliant List-Unsubscribe headers automatically to meet Google and Yahoo 2026 inbox standards.
SadaSend vs Nodemailer / Legacy SMTP
Compare modern Next.js edge dispatch against legacy Nodemailer serverless setups.
| Feature & Capability | SadaSend | Nodemailer / Legacy SMTP |
|---|---|---|
| Vercel / Edge Runtime Execution | Fails (requires Node net/tls) | |
| Serverless cold start | None — one HTTPS call, no handshake | 800ms - 2,500ms (SMTP handshake) |
| Vercel Preview Branch Guard | Automated allowlist | Accidental customer sends |
| Native React Email Support | Manual renderToString boilerplate | |
| Webhook Verification Helper | Built-in HMAC verifier | Manual crypto shims |
| Free Monthly Sends | 6,000 / mo forever | Requires paid relay |
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 Next.js email
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.
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.
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.
Nodemailer vs Native Fetch in 2026: Why Modern Runtimes Abandoned Legacy SMTP
Nodemailer served the Node.js ecosystem for 15 years. Here is why modern serverless and edge runtimes have replaced raw SMTP libraries with native fetch.
Building a transactional email queue on Bun and BullMQ without losing messages
The worst bug an email service can have is not a crash. It is accepting a message, returning 202, and never sending it.
Prevent Staging Email Leaks: Recipient Allowlist Guide
A single test script or database seed in staging can accidentally blast thousands of fake password resets to real customers. Here is how to engineer zero-leak staging pipelines.