Windows Mail Software

Eudora
* Eudora 3.x (light)
* Eudora Pro 4.x and 5.x

Outlook
* Outlook 97
* Outlook 2000
* Outlook Express 4 and 5

Netscape
* Netscape 3.x
* Netscape 4.0 to 4.08
* Netscape 4.5 to 4.76
* Netscape 6

Macintosh Mail Software

Common Mail Solutions