const express = require('express'); const cors = require('cors'); const crypto = require('crypto'); const inboxStore = require('./smtp_server'); const app = express(); app.use(cors()); app.use(express.json()); const DOMAIN = 'yourdomain.com'; // Replace with your actual configured domain // Endpoint to generate a random disposable email address app.get('/api/generate', (req, res) => const randomString = crypto.randomBytes(5).toString('hex'); const emailAddress = `$randomString@$DOMAIN`; // Initialize empty inbox bucket inboxStore[emailAddress] = []; res.json( email: emailAddress ); ); // Endpoint to fetch messages for a specific email address app.get('/api/inbox/:email', (req, res) => const email = req.params.email.toLowerCase(); const messages = inboxStore[email] ); // Background worker to auto-delete emails older than 10 minutes setInterval(() => const now = new Date(); const tenMinutesAgo = new Date(now.getTime() - 10 * 60 * 1000); Object.keys(inboxStore).forEach(email => inboxStore[email] = inboxStore[email].filter(msg => new Date(msg.date) > tenMinutesAgo); // Clean up empty mailboxes to free memory if (inboxStore[email].length === 0) delete inboxStore[email]; ); , 30000); // Runs every 30 seconds app.listen(3000, () => console.log('🌐 Web API running on port 3000'); ); Use code with caution. 🌐 DNS and Network Configuration
mkdir temp-mail-server cd temp-mail-server npm init -y npm install smtp-server mailparser sqlite3 express Use code with caution. Step 2: Creating the SMTP Receiver Script
These scripts use Python to create, monitor, and retrieve emails. Mail.tm API Implementation: Scripts can be built using Python to interact with the mail.tm API
You can purchase or find free disposable email scripts on platforms like CodeCanyon or GitHub. These usually offer: A clean admin panel. Automatic email deletion. Multiple domain support. 2. Using API-Based Services temp mail script
: It sends a POST request with a generated username and password. Poll Inbox
const SmtpServer = require('smtp-server').SMTPServer; const simpleParser = require('mailparser').simpleParser; const sqlite3 = require('sqlite3').verbose(); // Initialize Database const db = new sqlite3.Database('./emails.db'); db.run("CREATE TABLE IF NOT EXISTS messages (id INTEGER PRIMARY KEY AUTOINCREMENT, recipient TEXT, sender TEXT, subject TEXT, text TEXT, html TEXT, timestamp DATETIME DEFAULT CURRENT_TIMESTAMP)"); // Configure SMTP Server const server = new SmtpServer( secure: false, disabledCommands: ['AUTH'], // No authentication required for inbound public mail onData(stream, session, callback) simpleParser(stream) .then(parsed => ''; const html = parsed.html ) .catch(err => console.error("Error parsing email:", err); callback(err); ); ); server.listen(25, '0.0.0.0', () => console.log('SMTP Server listening on port 25'); ); Use code with caution. Step 3: Building the Rest API Frontend
The Ultimate Guide to Building and Deploying a Temp Mail Script Multiple domain support
// Webhook to receive email (you'd set up email piping to this script) if ($_SERVER['REQUEST_METHOD'] === 'POST' && $_GET['action'] === 'inbound') $to = $_POST['to']; $from = $_POST['from']; $subject = $_POST['subject']; $body = $_POST['body']; $exists = $db->querySingle("SELECT email FROM inboxes WHERE email='$to'"); if ($exists) $stmt = $db->prepare("INSERT INTO messages (email, sender, subject, body, received) VALUES (?,?,?,?,?)"); $stmt->bindValue(1, $to); $stmt->bindValue(2, $from); $stmt->bindValue(3, $subject); $stmt->bindValue(4, $body); $stmt->bindValue(5, time()); $stmt->execute();
A mail script cannot receive external traffic without proper routing infrastructure. The host server requires specific DNS records to accept external mail deliveries. 1. MX (Mail Exchanger) Record
app.use(express.json()); app.use(express.static('public')); and Production Challenges A commercial-grade
Many public temp mail services exist (Guerrilla Mail, 10MinuteMail, Temp-Mail.org), but they come with limitations: shared domains get blacklisted, messages are exposed to the service operator, and you can’t customize expiration times. A self-hosted gives you full control.
sudo npm install -g pm2 sudo pm2 start server.js --name "temp-mail" Use code with caution. 4. Scaling, Security, and Production Challenges
A commercial-grade, developer-friendly interface that translates complex email protocols (IMAP/SMTP) into clean, modern webhook and REST API formats.