- Create an email account on www.gmx.com
- Open "Settings" and check "Enable access to this account via POP3 and IMAP"
- Open "Preferences"
- Open "Sharing books by email"
- Click "Use GMX"
- Add GMX credentials
- Open Kindle "All Settings"
- Click "My Account"
- Copy "Sent-to-Kindle Email"
- Open Calibre.app "Preferences"
- Open "Sharing books by email"
- Click "Add email"
- Add Kindle Email
- Go to www.amazon.com/myk
- Click "Preferences" tab
- Click "Personal Document Settings"
- Add GMX email to "Approved Personal Document E-mail List"
- Open Calibre.app
- Right click on a book
- Select "Connect/share"
- Select "Email to..."
- Select your Kindle email
Thank you! Very recently, seems like GMX might be limiting or terminating accounts according to this reddit thread. Do you have instructions for setting up other email accounts to work with this feature?