There are many email programs available. I like the Thunderbird program from Mozilla.
The basis of the program comes from the old Netscape browser/email program. It has been modernized
considerably. Items that I like include the ability to have and organize several emails from one
simple program.
Another huge difference in Thunderbird is the built-in ability to program your spam filters. This
is done by simply marking as it comes in and unmarking any mistaken ones from your trash. It works
great!
Thunderbird (Free)