As far as I'm aware Hotmail is the only web based service that supports a downloading client, and of course it's Outlook Express May also want to check out http://www.boolean.ca/hotpop/ "Hotmail Popper is a small application that allows you to check your Hotmail account e-mail from a normal POP mail client (such as Eudora, IncrediMail, Mozilla Thunderbird, Opera, Netscape, etc)." http://yahoopops.sourceforge.net/ "YPOPs! is an application that provides POP3 access to Yahoo! Mail. It is available on the Windows, Linux, Solaris and Mac platforms. Yahoo! Mail disabled free access to its POP3 service. This application emulates a POP3 server and enables popular email clients like Outlook, Netscape, Eudora, Mozilla, etc., to download email from Yahoo! accounts."