I have a box in my shop I throw all the cc crap mailed to me. I just tear my name off and any "preapproved code". Once every 5 or 6 weeks I stuff everything I can fit into the return envelopes; cc offers, 2nd mortgage offers, starving children fund requests, leftover NRA stuff, kids drawings from school, etc. They have to pay first class business return postage. I don't know what the bill is for one of those but I'm sure its not cheap. Their postage meter sound like a taxi meter I bet.