Mozilla Thunderbird is the Best EMail Program
Version to use: 1.02
Hailing from the old Netscape Mail component, Mozilla Thunderbird brings a stable, powerful, and full featured mail client. The two biggest topics in email these days are spam and viruses. Thunderbird includes a "junk mail" filter that is very accurate: it marks most spam as such and very little "ham" gets marked as spam. Plus, it learns as it works and you "teach" it. By being based on the more secure Mozilla html engine, Thunderbird isn't susceptible to all of the virii that target the Internet Explorer based engines of Outlook and Outlook Express.
Also, let's say that you want some security in 1) who has actually sent an email and 2)the privacy of the contents of the email - then you should use enigmail, a GPG signing/encrypting plugin to Thunderbird. And if you need it to send me an encrypted message,