Offering coupon codes for your project is a handy way to give a discount to present or future buyers. You have several options when setting up a coupon code, including limited use coupons that allow a set number of uses. To set up a coupon code, you will be hosting a conditional sale, with the coupon code as the requirement to access the sale. You can choose a custom sale name or you can opt to have one randomly generated for you.
Coupon code sales create a new url on your account, which your buyers will need to access to redeem the sale. They are on your subdomain, so that they are short and easy to print out and distribute at events or online. For example, if you chose the coupon code secret-sale then the address would look like http://username.itch.io/secret-sale.