[Node.js SDK]
Express
Add reliable transactional email to Express APIs and middleware with a few lines of Node.js.
Step 1
Install the package
Add the official Node.js client to your Express project.
bash
npm install reloop-emailStep 2
Set your API key
Create a free Reloop account, copy your API key, and add it to your Express environment.
Get an API key free →bash
RELOOP_API_KEY="re_xxxxxxxx"Step 3
Send email from Express
Use this Express snippet to send your first message. Works with REST APIs · Middleware.
send_email.ts
1import express from 'express';2import Reloop from 'reloop-email';3
4const app = express();5const reloop = new Reloop(process.env.RELOOP_API_KEY);6
7app.post('/send', async (req, res) => {8 const { data, error } = await reloop.emails.send({9 from: 'Acme <onboarding@yourdomain.com>',10 to: [req.body.to],11 subject: 'Hello from Express',12 html: '<strong>It works!</strong>',13 });14
15 if (error) return res.status(500).json({ error });16 res.json({ id: data.id });17});18
19app.listen(3000);Next steps
Examples, docs, and API reference
Go deeper with working code and the full API for Node.js.
Other frameworks
Same API, framework-specific examples.
Send with Express.
Get an API key and ship transactional email from Express using the official Node.js SDK.