I have to rename my epubs to png and then I can send them to kindle via the share button (send to kindle doesn't support epubs directly for some reason)
After that it's available everywhere including my mobile phone and kindle reader which makes it quite easy to remain in sync (bookmarks, highlights, last page, etc)
After that it's available everywhere including my mobile phone and kindle reader which makes it quite easy to remain in sync (bookmarks, highlights, last page, etc)