A handy little Firefox add-on for managing multiple email accounts.
WebMail Notifier checks your webmail accounts and notifies the number of unread emails.
Supports : gmail, yahoo, hotmail, daum, naver, empas, nate and more.
If you want other webmail provider, you can make your own script. Sites supported by user script are:
– mail.qq.com
– www.fastmail.fm
– www.gmx.net
– mail.lycos.com
– www.orkut.com
– freemail.web.de
– poczta.fm(poczta.interia.pl)
Works with:

• Firefox: 1.5 – 3.7a1pre