Render25 — High-performance transactional email platform. Now available.
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Client SDKs

Node.js / TypeScript SDK

The official Render25 Node.js client. Works with TypeScript out of the box. Supports ESM and CommonJS.

Node.js 18+TypeScript 5+ESM & CJSBun & Deno

Installation

bash
npm install @render25/sdk

Or with yarn / pnpm / bun:

bash
yarn add @render25/sdk
pnpm add @render25/sdk
bun add @render25/sdk

Basic Usage

send-email.ts
import { Render25 } from "@render25/sdk";

const client = new Render25({
  apiKey: process.env.RENDER25_API_KEY!,
});

const result = await client.email.send({
  from:    "[email protected]",
  to:      "[email protected]",
  subject: "Welcome!",
  html:    "<h1>Welcome to the platform.</h1>",
  text:    "Welcome to the platform.",
  tags:    ["welcome"],
});

console.log("Sent:", result.id);

Note

Set RENDER25_API_KEY in your environment variables. Never hardcode the key in source code.

TypeScript Support

Full types are included — no @types package needed. All request and response payloads are fully typed.

types.ts
import type { EmailSendOptions, EmailSendResult } from "@render25/sdk";

const options: EmailSendOptions = {
  from:    "[email protected]",
  to:      "[email protected]",
  subject: "Hello",
  html:    "<p>Hi!</p>",
};

const result: EmailSendResult = await client.email.send(options);

Framework Examples

Next.js

Use in API Routes or Server Actions

Express

Use in Express route handlers

app/api/send/route.ts
import { Render25 } from "@render25/sdk";
import { NextResponse } from "next/server";

const client = new Render25({ apiKey: process.env.RENDER25_API_KEY! });

export async function POST(request: Request) {
  const { to, subject, html } = await request.json();

  const result = await client.email.send({
    from: "[email protected]",
    to,
    subject,
    html,
  });

  return NextResponse.json({ id: result.id });
}