It only takes a little common sense to prevent ESD damage, but there is no way to be sure the receiver will practice this. Personally, I don't like the idea of nonESD plastic (bubble pack) in contact with the board as plastic builds and holds an ESD charge pretty readily. Your idea of one layer of newpaper is a good one. Bizzarre as it sounds, wrapping the card in tin foil would be a bullet proof solution.