[quote=Blogstar]No problem, most of us have mail boxes, but this guy has refused to pick up certified mail before. He will get the letter one way or another though. Service is not so strict like it is for some types of legal situations.[/quote]
If he has a rural mailbox out in the street and a street address, an online printout of USPS tracking service (much cheaper than certified and no signature is necessary) might suffice for adding the letter (exhibit) to your future complaint. You really need to be able to prove that Mr Wacko received your letter. Certified (Return Receipt Requested) is much better, though.