The tool you can see below the Add to Cart button is our Messenger Discount Widget.
It can incentivize subscriptions on the product page as customers need to check in in order to reveal the discount.
As little as 5% could subscribe many many customers to the list.
We have another subscribing tool called the Messenger Add to Cart Popup. It will appear when the visitor clicks on the Add to Cart button. Click on the ATC button to see how it works.
You can read more about it here.