Daddy's little hero
I've had almost exactly that conversation, email after email was sent warning users that their company's SBS 2000 Exchange store was near or at limit, that they needed to archive off old email, save attachments, delete joke videos, pictures etc. they were asked to 'sign and acknowledge' that they'd read and understood before I 'took action' and enforced a purge of deleted items, oversized emails etc.
The Monday after the purge my frst phone call was from the MD's son who 'lost all his work in progress emails' that he'd decided to store in the trash, he was threatening all sorts of repercussions including invoking daddy.
I simply emailed his signed acknowledgement back to him and his dad before charging them an exorbitant rate to restore from backup.