SpamTitan has a great GUI with a lot of features to earn time and reduce load on mail server. We have recieved excellent feedback from users, tons of spam removed without any action.
SpamTitan also has a reactive helpdesk and remote assistance if required (through tunnel SSH). With SpamTitan, you get clean mailbox each morning, a dailly report with potential false positive and a lot of settings to avoid spending hours sorting your mail.
