I recently got a Kindle. I already have a bunch of PDF and ePub books on my computer that I've bought over the years. I wanted to be able to read some of those books on the Kindle. I found that there is a way to send these formats to your Kindle via email.
There are a couple steps to get this working.
First, from the Amazon account that is tied to the Kindle device, open the
Account dropdown and click _Devices. Any devices tied to your account will be
listed there. Navigate to the one you want to send to. Under the Device
Summary with be a custom email address for that device. Something like
[email protected].
That's the email you'll send the PDF or ePub attachment to.
Second, that Kindle email address will only receive and process documents from a known, verified email address. Back on the _Devices_page, click on the Preferences tab. Under Personal Document Preferences make sure that the Approved Personal Document Email List includes the email address you'll be sending from. Add it if not.
Everything is set up. Now compose an email to that Kindle address, add the attachment, and send. Give it 5 or so minutes to process and it should show up on your device.
Additionally, you can go to the Content tab and then to Digital Content to see what documents you have set and which devices have received them.