Can I ask people to leave an Amazon review?

From KDP: Customers value unbiased book reviews. You're welcome to encourage others to read your book and post their reviews on its detail page. Customer reviews may take several days to process. Have questions about our Community Guidelines? Email us at [email protected].

However, you may not demand a review in exchange or attempt to influence the review. Offering anything other than a free or discounted copy of the book—including gift cards—will invalidate a review, and we'll have to remove it. To learn more, see our Community Guidelines.