Mozilla Thunderbird

Homepage: http://www.mozilla.org/products/thunderbird/

Download link: http://www.mozilla.org/products/thunderbird/

Operating Systems: Windows 98, Me, 2000, XP, Vista. OS-X, Linux

Description: Email client software.  Supports: Pop3, Imap, Smtp, extensions, webmail access, spam filtering, anti phishing, spell checking, automatic updates κand many more.

Foxmail

Homepage: http://fox.foxmail.com.cn/

Download link: http://www.softpedia.com/get/Internet/E-mail/E-mail-Clients/Foxmail.shtml

Operating Systems: Windows 95, 98, Nt, Me, 2000, XP, Vista.

Description: Email client software with many features. No  IMAP supported. Web site is in chinese and help is not fully translated. More info here: http://www.hazeleger.net/psjs_faqs/12063947.html