Mail by the Mall is right behind Columbia Center, which has come in very handy when I need to get gifts shipped off in time for the big day. You can take something in that you've just purchased and they help you find packaging supplies, tape, bubble wrap, etc. to make sure it arrives safely. It seems a little high priced but worth it for the convenience. I've never had to wait in lines that are too long either. The whole process takes just a matter of minutes and you are on the way.