%general-entities; ]> Mail Clients help you retrieve (Fetchmail), sort (Procmail), read and compose responses (Heirloom mailx, Mutt, Pine, Kmail, Balsa, Evolution, SeaMonkey) to email. News clients also help you retrieve, sort, read and compose responses, but these messages travel through USENET (a worldwide bulletin board system) using the Network News Transfer Protocol (NNTP).