Programs Downloader

A simple menu bar application which can provide you with a quick and easy way to see how many unread email messages are in Apple’s Mail. Unlike other menu bar notification applications, Mail Unread Menu is actually a plugin for Mail.app, which means that the count is instantaneously updated whenever you recieve new email or change the status of a message.

http://www.apple.com/downloads/macosx/email_chat/mailunreadmenu.html