How are guys exporting highlights from kindle? A couple of months ago, I was looking to implement a kindle to Evernote exporter. I couldn't find any official API with the capability, so I ended up writing a scrapper that did the work. See: https://github.com/nishanthvijayan/kindle-highlights-to-goog...
We actually maintain an open source tool called Bookcision which is for easily exporting your Kindle highlights which follows roughly the same approach we take (but is non-automatic, unlike our product):
https://readwise.io/bookcision https://github.com/tristanh/bookcision
Readers should have access to their own reading data! :)