Scripts for analying POP3 usage

[Kenneth Porter]

Has anyone a script for analyzing usage?

I want to scan my logs for users who leave mail on the server and for
mailboxes that haven't been popped in some period of time, or those that
have never been popped. I figure this can be done by grepping all the
Stats lines from the maillog file and doing some processing on them,
comparing them to the list of files in the spool directory.