Currently supports
- Gmail (Gmail & Google Apps)
- Yahoo (yahoo.com, ymail.com, rocketmail.com, yahoo.co.jp, btinternet.com, ovi.com)
- Hotmail (hotmail.com, outlook.com, msn.com, live.com)
- AOL (aol.com, aim.com)
- Daum (daum.net, hanmail.net)
- Naver
- Nate (nate.com, empas.com)
- POP3/IMAP
- RSS
Other sites are supported with scripts.
http://xnotifier.tobwithu.com/scripts.php