How do I transfer books from my Mac laptop to my kindle?
I am talking about books that I did not buy from Amazon. My daughter and I used to share books. I belong to several book sites.
MacBook Air, macOS 15.0
You need to ask Kindle support. This forum is for Apple's Books app.
Books bought from Apple normally can only be read on an Apple device, not on a Kindle. Books bought from Amazon can be read on Apple devices via the Kindle app. Books bought from other sources may require their own app.