I've used Calibre to send epubs to my kindle in the past and they've arrived with the cover art intact, presumably because of some automatic conversion that goes on in the background. That's fine, except that Calibre doesn't really slot neatly into an automated JS script (which I'm hoping to run as an AWS Lambda function). Does anyone know of either:
- An automatable way to send epubs to kindle while preserving the cover art in your library?
- An automatable way (ideally, a JS library) to convert epub to mobi/azw so I can send the output of that instead?