Thumb Score: +7 Kohl's Mystery Savings Coupon: 40% 30% or 20% will be emailed to those on the Kohl's email list the morning of 10/21/18. Valid for same day use only. You must be signed up in advance for Kohl's emails in the first place, so if you are not already, do it now. https://www.kohls.com/homepage/sa...signup.jsp Your mystery savings percentage (40%, 30% or 20%, and its associated one time use code) will be revealed in the body of the email. To use at Kohls.com: Enter manually, or copy/paste the code from your email during checkout.