So I got a bunch of express mail usps padded envelopes in the mail today. When I ordered them I just saw FREE and was like heck yeah!! But a duh I didn't think that they would only be aloud to be used with Express Mail!! I did read on the usps website that even if you try covering up the markings they will still charge you as Espress Mail (which for the envelope I got is about 19 bucks!). So I was thinking what is I just wrapped the envelopes once I put an item inside the envelope? Like some kid of packing paper or something, but is that ILLEGAL?? I am not trying to break any laws, just don't want to charge people almost 20 bucks for shipping, even though it would be overnight. Any Ideas????