Only today we received yet more mail for the previous owners who moved out nearly six years ago.
Ironically, the mail we still receive here relates to a business they ran from home. I usually write 'Not at this address since 2001' on the envelope and bung it back in the postbox.
The owner did, however, turn up one day asking whether we'd received a special delivery of dentures he was expecting (they were in that business).
If he could take the time to chase those up, I'm sure he could take the time to re-direct his mail, the only thing is that if we mugs keep on sorting things out for these people, they're not going to pay for the Post Office to do it are they?