You're right. Sending web articles & newsletter has been my primary use-case. I haven't updated my marketing pages yet.

> How does it work with SE Books?

To use KTool with SE Books, you need to install the browser extension[0]. Then you can browse standardebooks.org, find the ebook you love, click KTool > Send to Kindle and it will send the _epub_ version to your device. The quality of the epub ebook is pretty good, actually. Here is a screenshot[1]

> Are you able to do it wirelessly while still maintaining the azw3 features given SE's Kindle FAQ indicating it doesn't work with send to Kindle

Yes. It's less straight-forward though. First, you need to update your settings to "preferAZW3"[2]. Then, instead of sending the epub version, KTool sends a document with a download button (link to the AZW3 ebook file). Tapping that button to download the high-quality ebook to your device. Screenshot[3]

Happy to support if you running into any issues (my email in profile)

[0]: https://ktool.io/install

[1]: https://twitter.com/daniel_nguyenx/status/155152385925356748...

[2]: https://ktool.io/app/extension?settings

[3]: https://twitter.com/daniel_nguyenx/status/155171706234696908...