Dear All,
There are various email packages for MacOS X, and to be honest you have to try them all to find out which one best suits your needs. So far there is:
Apple Mail App (comes free with MacOS X)
Microsoft Entourage X (Comes with MS Office - prices vary)
Netscape 6 Mail - (Free, but a big download)
Eudora 5.1 (Free for the lite version and it very popular)
PowerMail 3.0.9 (Great little emailer around $50)
There are a few other, but the list that I have listed, I have tried. Each application have their own advantages and disadvantages. In my opinion, Entourage X is the best, but unfortunately, you have to buy MS Office X to use this application. Nanasound, as you said in your thread, you use Outlook Express, so Entourage would be the best choice. If you have the money, buy Office X or wait for the X version of Outlook Express. It could be next week, or it could be next year. Who knows? Or try the other mail applications that I have listed.
Hope the advice helps