Section mail - Debian Package: mailagent

 Mailagent allows you to process your mail automatically. This has
 far more functionality than procmail, and is easier to configure
 (providing, of course, that you grok perl). As a mail processing
 tool, this slices, it dices, it ...
 .
 Given a set of lex-like rules, you are able to file mails to specific
 folders (plain Unix-style folders and also MMDF and MH ones), forward
 messages to a third person, pipe a message to a command or even post
 the message to a newsgroup.
 .
 It is also possible to process messages containing some commands.
 .
 You may also set up a vacation program, which will automatically
 answer your mail while you are not there, but more flexibly than the
 Unix command of the same name. You only need to supply a message to
 be sent and the frequency at which this will occur. Some simple macro
 substitutions allow you to re-use some parts of the mail header into
 your vacation message, for a more personalized reply.
 .
 You may also set up a generic mail server, without the hassle of the
 lower-level concerns like error recovery, logging or command parsing.
 .
 The mailagent is not usually invoked manually but is rather called
 via the filter program, which is in turn invoked by sendmail. That
 means you must have sendmail/smail on your system to use this. You
 also must have perl to run the mailagent scripts.
 .
 It is possible to extend the mailagent filtering commands by
 implementing them in perl and then having them automagically loaded
 when used.
 .
 Please note that on Debian systems, mailagent can not lock /var/spool/mail
 directory mailboxes, and thus one must put a catch all rule saving all mail
 in ones home directory. This is because Debian MDA policy requires them to
 be setgid mail, and making anything as extensible as mailagent setgid
 anything negates any benefit of having group permission protection.