Automatic folders for mailing lists using procmail

Here is a quick tip which I have gleaned from multiple sources which makes using procmail filters a breeze. I subscribe to dozens of mailing lists, and it really is somewhat of a chore to create filters for every mailing list I signup for so that mails for that list goes to a separate folder. However, it is possible to setup procmailrc in such a way that you really don’t need to update procmailrc for every new mailing list that you signup for.