To date, I’ve only used the Kindle notes site (read.amazon.com/notebook), where I copy the plain text notes out and then paste them into Notion or whatever other writing app I’m using at the time. Though that’s with books; with web articles, I tend to read in Instapaper. Do web article highlights show up in the Kindle site as well?

A less manual option is Readwise, which syncs Kindle and Instapaper highlights and can directly sync them with Notion (or Evernote and Roam Research). Seems like a popular tool, though in a recent Capiche discussion about Readwise everyone seemed undecided if it was worth its price. If your core use-case is wanting your highlights in Notion, that one feature may be worth it.

Another option I tried in beta but haven’t tried recently is Klib, a Mac app that syncs Kindle highlights and turns them into Markdown text, which you could them copy or import into Notion.

Readwise just launched a beta of a Notion integration!

Readwise offers a Notion integration. It looks astonishing! Very beautiful and very useful. It’s expensive, though.