From their website:
Q. How can I be added to the Kohl’s circular mailing list?
A. If you are a Kohl's Charge customer, you'll automatically receive circulars for our biggest sale events. For our non-Kohl's Charge customers and our smaller events, we rely on newspapers in communities surrounding our department stores to distribute our circulars. So, if there is a Kohl's near you, be sure to check your local or regional newspaper regularly for our weekly circulars.
If you don't live in an area near Kohl's or don't receive a newspaper, you can still find out about our upcoming events! Simply click today's ad at the bottom of any page at Kohls.com to see the in-store circular for the Kohl's nearest you!