WebMail Notifier is a firefox add-on to checks your webmail accounts and notifies the number of unread emails.
Currently supports:
Gmail (Gmail & Google Apps)
Yahoo (yahoo.com, ymail.com, rocketmail.com, yahoo.co.jp)
Hotmail (hotmail.com, msn.com, live.com)
AOL (aol.com, aim.com, mail.com)
Daum (daum.net, hanmail.net)
Naver
Nate (nate.com, empas.com)
Paran (paran.com, hanmir.com)
POP3/IMAP
Download WebMail Notifier
