Doesn’t work with personal (emailed) documents library

Usually, users can add personal documents to the connected Kindle device or app, by sending them to a special email address. They can also download these personal documents from the Kindle cloud to particular Kindle apps.

However, this useful feature is not available in:

Kindle Cloud Reader
Kindle for PC
Kindle for Mac

In other words, when you open Cloud tab in the Kindle Cloud Reader, you’ll only see the books purchased from the Kindle Store.

It took me going to a third party site to figure out why this wasn’t working. The policy wouldn’t have made me that mad if they’d just been up front about it.

The-hattar about Kindle Classic