From the Accounts and Lists menu on Amazon, go to Your Content and Devices.
Select the Preferences tab at the top of the page.
Scroll down and click to open the Personal Document Settings section.
Under Send-to-Kindle E-Mail Settings copy the email for your preferred device and send it to us.
Scroll down to Approved Personal Document E-mail List and click on Add a new approved e-mail address.
@light-sleepers.com to your approved emails list.