mt

Mail tester daemon.

Fake a SMTP server and print email to stdout.

It binds to port 25 by default, so probably you will have to sudo it. If you want to run it in a different port, pass the port number as the first argument.

$ mt

# Email contents will be displayed here.

$ mt 2525

# Tell mt to bind to port 2525 instead.

$ mt &

# Run it in the background.

You can install it using rubygems.

$ gem install mt