Note: If you use a discount code and it brings your subtotal under the free shipping threshold, the shipping charge will apply to your order Gift Cards are considered a discount code at checkout, so you would just input the code exactly as received in your email, and voila Please make sure you don't have any subscriptions in your cart. Our subscription app won't allow gift cards as it doesn't know what to charge when the recurring bill comes around.  One easy way to tell if you have a subscription in your cart is by looking at the title. If the product title says "5.00% Off Auto-Renew", that means it was selected as a subscription.  You can go back into the product page and select "One-time purchase" and remove the subscription product from your cart.  Make sure the code is input exactly as it appears in your email. So if there are spaces, uppercase, lowercase, numbers, etc., be sure they are the same when you add the code on the site. It's easiest to click the copy button in your email and just paste it in the discount code box.  Lastly, gift cards cannot be combined with other discount/promo codes. If you have another discount activated in your cart, the gift card will not work