1. A program that filters your incoming e-mail to help remove spam. Mailfilter is very flexible utility for UNIX (-like) operating systems to get rid of unwanted e-mail messages, before having to go through the trouble of downloading them to the local computer. It offers support for one or many POP3 accounts and is especially useful for dialup connections via modem, ISDN, etc. Install Mailfilter if you'd like to remove spam from your POP3 mail accounts. With Mailfilter you can define your own filters (rules) to determine which e-mails should be delivered and which are considered waste. Rules are Regular Expressions, so you can make use of familiar options from other mail delivery programs such as e.g. procmail. If you do not get your mail from a POP3-Server you don't need Mailfilter. From Debian 3.0r0 APT