Express Mail Overnight Guaranteed it reads in large print. When you go online to find postage between the 2 zip codes it tells you the delivery commitment is one day. I had some product shipped I needed desperately the next day. It wasnt there the next morning. So I called the CS post office and was tiold next day is 2 days to them. I went to the post office website and if you punch in the 2 zip codes it tells you that it should be delivered the folliowing day. It turns out you have to read further downa and click on yet another box to... read full review »