Unless it has paid postage on it, it's illegal to put it in the mailbox: http://codes.lp.findlaw.com/uscode/18/I/83/1725 http://codes.lp.findlaw.com/uscode/18/I

Unless it has paid postage on it, it's illegal to put it in the mailbox: http://codes.lp.findlaw.com/uscode/18/I/83/1725 http://codes.lp.findlaw.com/uscode/18/I/83/1725