Just looking for clarity on Aliases. I have created a coupon called streamsend5 which is a 5% off coupon. I would like to use aliases for this that I create myself, and I would like each alias to only be able to be used once. So, does this mean I can have the coupon set to expire after one use? What format should the aliases I create be in? Does the CSV need any special format like a header? Thanks!