I have been downloading some books from the internet in mobi format on my computer. I connect my Kindle with the USB and paste the files in the documents folder of my Kindle. I can read them on my Kindle but they don't get synced on the cloud. How do I sync these books? I am fine if I lose my bookmarks or reading progress just want these to be backed up. Please help
Read more:
How to sync Kindle books not purchased from Amazon (Non-Amazon purchased books)?