NOTE: Not every product has the free sample option, but most of the envelopes and mailers do. How to claim your free items:Click on an item you are interested in on their website. If the item is eligible, you’ll see a grey “send free sample” button in the product page.
Click this. Add any other free products you want, using the same process. Go to your shopping cart.
Complete the checkout process as normal (no credit card needed).