[OT] E-mail programs

Greetings,

With, yet another, VBS Worm out there, I am looking to switch to a different
program than Microsoft Outlook for my mail.

Right now I am looking for a program with the following features:
 - Ability to Sort mail into folders.
 - Address book that allows grouped addresses.
 - Ability to view/send HTML mail and mixed text/html mail
 - Ability to disable HTML mail for specific names (i.e. the gzg-l
mailing list)
 - Ability to disable scripting (or not have scripting).
 - Return Reciept
 - Stable (Netscape Mail tends to die on me for some reason)
 - Free, shareware, or full demo version.
 - Not web-based (i.e. real STMP/POP3/MAPI mail).
 - Runs under MS Windows 98.

I will gladly accept suggestions OFF-LIST

Thanks,
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