The core function of such a script is to generate a random email address, accept incoming mail for that address for a set period (usually ranging from 10 minutes to a few days), and then automatically delete the inbox and all associated data.
Running an open SMTP server invites malicious traffic. Restrict your script to handle incoming mail only, blocking outbound SMTP relaying completely to prevent your server from being hijacked for spam campaigns. Implement rate limiting on both the SMTP port and the web API endpoints to mitigate Denial of Service (DoS) attacks. Utilizing Cloud Alternatives
Have you built a temp mail script? Share your experience in the comments below.
def generate_random_username(length=10): """Generates a random string for the email username.""" letters = string.ascii_lowercase + string.digits return ''.join(random.choice(letters) for i in range(length))
Developers use temp mail scripts to test user registration flows without creating dozens of real accounts. temp mail script
The script must take the raw email data, parse the headers (From, Subject, Body), and save them to a table.
Because temporary emails expire quickly, the storage layer must prioritize speed over long-term persistence. Redis or MongoDB are ideal choices. The data requires a Time-To-Live (TTL) index to automate the deletion of expired messages. A frontend interface fetches these messages using a REST API or real-time WebSockets. Core Features of a Professional Script
DNS records that point the domain to your mail server script.
app.listen(PORT, () => console.log( Temp mail script running on port $PORT )); The core function of such a script is
@app.route('/inbox/<path:email>') def inbox(email): cleanup_expired() db = load_db() if email not in db: return jsonify('error': 'Inbox not found or expired'), 404 return jsonify('email': email, 'messages': db[email]['messages'])
For most personal projects, a simple PHP or Python script works fine. For a public temp mail service with thousands of concurrent users, invest in Node.js + Redis.
// Parse recipient (To: field) preg_match('/^To: .*<(.+?)>/m', $rawEmail, $toMatches); $toEmail = $toMatches[1] ?? ''; if (!$toEmail) exit;
: This script requires an existing email account to use as the backend for sending and receiving emails. You'll need to replace 'your_email@gmail.com' , 'your_password' , and 'smtp.gmail.com' with your actual email, password, and SMTP server. Implement rate limiting on both the SMTP port
What do you prefer for your production environment?
Often used for web-based temp mail services. You can find pre-built scripts on W3Schools for basic mail functions, but full inbox clones usually require a backend database to store incoming mail.
if __name__ == "__main__": main()
Node.js is ideal for modern, fast temp mail services. Using libraries like Nodemailer or Smtp-server , you can build a script that handles incoming SMTP traffic directly. This is often paired with a real-time frontend using Socket.io to show new emails without refreshing the page. Python Scripts