Can you pay for Kindle Unlimited with gift cards? Unfortunately, as Kindle Unlimited is a subscription service that usually automatically renews, you cannot use a gift card to purchase a gift subscription.
In this regard, can someone else use my Kindle Unlimited?
In short, Amazon does not allow you to share your Kindle Unlimited benefits with another account – like they do with Amazon Prime. Although Prime benefits can be shared with a friend or spouse (including the access to music and videos), you cannot share your Kindle Unlimited benefits with another account.