These ebuilds come from http://gentoo.zugaina.org/.
If you have some problems, go to the official site first.
kcheckgmail : KDE systray application to check your Gmail. ( http://sourceforge.net/projects/kcheckgmail )
roundcube : A browser-based multilingual IMAP client using AJAX ( http://www.roundcube.net )
sylpheed-claws : Sylpheed-Claws is an email client (and news reader) based on GTK+ ( http://claws.sylpheed.org )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org