[offtopic]Is this really offtopic? If you surf the web and check your mail at the same time, then your arguement makes sense. In fact, anything that makes multitasking easier on a low power computer is great. But how many people are so hardcore that they can read email and surf the web at the same time?
Personally, if I was going to do the mail/web-at-the-same-time-with-the-same-program thing, I would probably use Mozilla. Sea Monkey even. Mozilla's mail client is top notch, and Sea Monkey is a rad browser.[/offtopic]