Yahoo Mail Beta
I just got the invite to the beta upgrade of Yahoo and boy - it's really looking great. I've always preferred Yahoo to Gmail - for one, Gmail's spam filters are atrocious, and I think I work better using folders anyway. And now Yahoo has the standard three-pane look of desktop-based programs. Plus - drag-and-drop, right-click menus, keyboard shortcuts. Gush. I'm still sticking with Eudora for my regular needs - but for webmail, this looks great.