This script scans all Eudora mailboxes for messages older than the value of "aging" in days. It moves any messages it finds to a designated mailbox "BackupMailbox." Any mailboxes listed in the Exclude property are not checked, and this may be confirmed because the windows of unchecked mailboxes are not closed by the script. This allows the user to easily move any desired messages to the backup folder manually. I exclude "In" because the vast majority of my mail gets filtered, and "In" usually contains on-going conversations with people or messages I want to keep available.
I am deeply indebted to Joe Barwell <jbar@es.co.nz> for his help with this script, and for his help with my general stupid scripting questions. He has the patience of a saint. He deserves most of the credit and none of the blame for this script.