For special cases, you might want to ensure a certain product is hidden from your abandoned cart messages. You can add a special tag to your product to make this happen. This would not be needed for the average merchant but for special cases, e.g. you have a default product for shipping insurance you add to every cart but you don't want to show it in your abandoned cart messages.
From the All Products page on the Shopify store, go to the product you want to hide and add a tag : "octaneai-hidden" and save your changes:
Keep in mind, this would only hide the product from cart abandonment messages. it would not hide it from your order confirmations.