I'm done with Apple Mail. It crashes continually, it's slow, essentially it's crap as far as I'm concerned. Have read a lot of reviews for alternate programs and MailMate seems to get the best reviews. Yes, it's $50 which seems high for an email app but I'll happily spend that money if it makes my life easier and more productive.

Michael - since you work so intimately with numerous email programs I'd like to know your thoughts regarding MailMate in general as well as how it interfaces with SpamSieve. Would love to hear other people's opinions as well.