What is "This order contains a gift" in Amazon.

"This order contains a gift"

 Are you ever see that in Amazon.

Don't think that Amazon is giving you a free gift for this order.  

"This order contains a gift" means you can send this product to anyone as gift and Amazon is allowed to write a very short note in a few words describing about the gift.

The note is describes the gift .

Examples: Enjoy your gift

Adding a Recipient's mail address-  An email is send to the Recipient on the time of delivery about the gift, the email contains your gift message.

 .......... ThankYou...............