Google Apps is a powerful platform, but to make it even more powerful these simple Mail settings will turn your email into a dashboard of information. We recommend giving these settings a try, we've found them to make a difference for our users:
Via the Settings Menu, click on Web Clips and click disable.
Via the Settings Menus, click on General and Enable Keyboard shortcuts.
Via Settings, the Labs tab enable Labs (if necessary).
From the Labs settings area click enable on the following:
...