Install fdm by entering the following commands in the terminal:
sudo apt update sudo apt install fdm
Description:
fetching, filtering and delivering emails
fdm is a program to fetch mail and deliver it in various ways depending on a user-supplied ruleset. Mail may be fetched from stdin, IMAP or POP3 servers, or from local maildirs, and filtered based on whether it matches a regexp, its size or age, or the output of a shell command. It can be rewritten by an external process, dropped, left on the server or delivered into maildirs, mboxes, to a file or pipe, or any combination. . fdm is designed to be lightweight but powerful, with a compact but clear configuration syntax. It is primarily designed for single-user uses but may also be configured to deliver mail in a multi-user setup. In this case, it uses privilege separation to minimise the amount of code running as the root user.
Homepage: http://fdm.sf.net
Version: 1.7+cvs20140912-1build1
Section: universe/mail