Hear, hear!
I'm no more a fan of having my web-browser be my email client, than I am in having my text editor be my web-browser. I have no problem sending code snippets and such through email, or any of the other things mentioned. The other thing I like is that I get to choose my text editor. I hated having to use Netscape Mail, because it's a piss-poor text editor -- that's not what it's designed for. When I'm seding email, I wanna use a *real* text editor. Come to think of it, that's one of my biggest issues with all those Integrated Development Environments, too... I hate their editors.
/me steps back from the brink of text-editor holy war.