Dead End Haraka SMTP
Dead End Haraka SMTP is a fake SMTP server built on Haraka (a node.js SMTP server) that acts like a regular SMTP server but doesn't actually send any of the emails. Instead, it keeps them locally so you can view and debug them. This is useful for developers working on a system that sends mails and prevents developers from mistakenly sending emails to real email addresses by mistake from a development machine.
Haraka requires node.js to run.