Seamonkey mail & newsgroups client supports nntp newsgroups and imap/pop mail. it has a full variety of features such as multiple accounts, labels, adaptive junk mail control, s/mime, digital signing.

seamonkey address book adds address book management to the seamonkey mail & newsgroups client. it supports ldap, vcards...

see the 'seamonkey' package for more information on the seamonkey internet suite.