Great open source project for testing SharePoint email: MailCatcher

I had to configure SMTP on a SharePoint server where QA and Developers need to view the email output.  Normally I use SMTP4Dev to simulate my SMTP servers for development, but in this case I need to have the QA and Developers have access to the email without direct access to the server.  I looked around and found MailCatcher, a Ruby based program that acts as a SMTP server and web application.  To support MailCatcher I needed to install Ruby using the Ruby Installer for Windows.  The installation of Ruby is quite easy, and once it is installed the installation of MailCatcher simply requires a simple command:

gem install mailcatcher

Once it is running, I get a very pretty interface to give to my Developers and QA: