I like to have a separate Safari browser window for Gmail sessions, without the Safari toolbar or bookmarks bar.
It’s a bit of a pain to set this up each time the browser is reset, so here’s a handy tip for creating a bookmarklet which opens Gmail in an uncluttered window of its own:
javascript:window.open("http://gmail.com/","gmail","titlebar=0");
Save this bookmarklet to the first position in your personal bookmarks bar and you can also access it using the shortcut key Command+1.