This wiki describes a basic Debian install of paclink-unix that will work with most e-mail clients. If you are installing paclink-unix on a machine with no keyboard or display then you will use a command line mail client like mutt. If the install is to a 'regular' linux box with keyboard & screen I'm going to assume you are using Claws-mail, Rainloop or Thunderbird email clients or something that allows configuring a Unix movemail account. For some background on how e-mail works I found this link helpful: A short introduction to the notorious MxA bunch.
If you have suggestions for additions or corrections to this wiki please post them to the groups.io paclink-unix group.