Kohl’s mystery coupons sent through email to let you a mystery discount amount. You have to click on the link in the email to reveal your Kohl’s mystery coupon code. After you click on the link, you will be redirected to kohl’s website, where you are given a mystery code that would be either 20%, 30% or 40% off mystery codes. You can grab Kohl’s mystery coupon online or in-store. Kohl’s even offers free shipping.