Coupons are a great way to give your Subscribers a discount, when applicable. Since coupon codes can easily be shared through word of mouth or social media, there are times when you want coupons to be unique. Use coupon codes to create unique versions of a master coupon.
For example, you may have the coupone 50OFF. Create a set of unique coupon codes that reside under the umbrella of your 50OFF coupon. An example would be 50OFFMM9280