mlmmj-rbarchiver is a wrapper program around mhonarc (http://mhonarc.org) that allows you to generate a nice HTML email archive for you mlmmj-managed mailinglists. The resulting directory is split up by year and month, so it is easily navigatable. This gem contains both a program intended to be run by cron(8) for processing your mailinglist(s) and a library that can be used to archive mailinglists programmatically.