GMail has two features that you need - you need them because you are pathetic, emotional and rash (that's Human to you and me). Feature 1. Undo Send - gives you five seconds to change your mind after you click the send mail button. Doesn't sound like much but usually that feeling of dread when you decided to mail your boss as 'Dear cockmeister' is pretty instant. Feature 2. Mail Goggles - Before you can send mail late at night when you may be worse for wear the gmail interface will ask you to solve some simple questions and thus ensure that you are capable of thinking straight.
These features are under the Labs link in the gmail settings page, you will also find a gmail offline feature there which enables you to use gmail from a pc based client when you are not connected to the webternet.
cool
Farkin Computers
In the pub