e-mail client

an e-mail client is an installed software on the user machine to access an E-Mail Account (outlook).

But the Web based E-mail is a service offered from a server to access an e-mail account using a Mail Client from the Internet Browsers (IE, NS...)

Good Luck

TO PUT IT ON SIMPLE TERMS:

e-MAIL CLIENT SUCH AS EUDORA/OUTLOOK/OUTLOOK EXPRESS IS BASED ON A POP3 OR SIMILAR SYSTEM THAT WILL PRETTY MUCH DOWNLOAD YOUR E-MAILS TO YOUR LOCAL MACHINE

WEB-MAIL SUCH AS HOTMAIL, YAHOO, EXITE ETC IS A MAIL ACOUNT YOU ACCESS THROUGH THE INTERNET EXPLORER OR ANY OTHER BROWSER AND THE MAIL IS STORED IN THE SERVER VS BEING STORED ON YOUR LOCAL MACHINE

THOUGHT THERE ARE SOME EXCEPTIONS, LIKE HOTMAIL, WICH NOW CAN BE ALSO ACCESSED VIA OUTLOOK EXPRESS (BUT WILL LEAVE MAIL IN THE SERVER) MOST EVERY MAIL ACCOUNT IS EITHER/OR