Speeding up emailing in tests

I lived with the fact that my test ground to a halt when my tests ran code that had to send emails. It finally got so bad I started asking around about it.

I knew about a method to test ActionMailer and not send out emails... and I thought: why not apply these to ActionMailer when it's in the test environment? I ran my tests with rspec. Check out the pastie to see the code.