Interesting roundup however I disagree with the premise that OS X Mail is deficient. I'm glad the author wants his social networking integrated with mail but I for sure DON'T (and I bet plenty of other folks don't either).<p>I want my mail client to handle my mail. OS X Mail does just that in a very efficient and simple way. I have no trouble handling multiple Gmail and IMAP services. The automated rules are robust enough to handle most needs and smart folders break our messages in whatever arrangement I need.<p>I fail to see what else you'd want a mail app to do.