If you have ever wanted to get your mailto links to work with google apps, but didn’t want to shell out for third party apps, there is a simple program by google to help you do that.
It isn’t that hard really just go to replacing example.com with your domain.
This may require chrome. I haven’t tried to run it without it.
http://dl.google.com/tag/s/ap=example.com/googlewebapps/en/googleappsstandalonesetuptagged.exe