simplesmtp

const simplesmtp = require('simplesmtp'); const PORT = process.env.SMTP_PORT || 2525; simplesmtp.createSimpleServer({ SMTPBanner: "My Test SMTP Server", debug: true }, function(req) { console.log(`[simplesmtp] New message from: ${req.from}`); console.log(`[simplesmtp] To: ${req.to.join(', ')}`); console.log(`[simplesmtp] Host: ${req.host}`); console.log(`[simplesmtp] Client IP: ${req.remoteAddress}`); // Pipe the incoming email data to stdout console.log('\n--- Email Body Start ---'); req.pipe(process.stdout); req.on('end', () => { console.log('\n--- Email Body End ---'); // Accept the message after processing req.accept(); console.log(`[simplesmtp] Message accepted from ${req.from}`); }); }).listen(PORT, function() { console.log(`[simplesmtp] Simple SMTP server listening on port ${PORT}`); console.log('Send an email to this server (e.g., via telnet: `telnet localhost 2525`, then SMTP commands like `MAIL FROM:<test@example.com>`, `RCPT TO:<recipient@example.com>`, `DATA`, `Subject: Test\n\nHello world!\n.`)'); });