Can I send coupon codes through FeedbackFive?
FeedbackFive does not include coupon functionality because of Amazon's policies.
FeedbackFive does not include any built-in option for adding or generating coupon codes because the Amazon Communication Guidelines say that sellers may not send any promotional materials through Buyer-Seller Messaging.
Also, Amazon’s policy prohibits offering any type of incentive or reward (including a coupon code) for leaving, editing, or removing a product review or seller feedback.
For more on what content you can include in emails, see What can I include in my emails?