Next we disable kindle’s screensaver as kindle will automatically enter sleep mode after 10 minutes:
Press the Home button to go the the Kindle home screen
Press the keyboard button to display the virtual keyboard
Type following string: ;debugOn and press Enter button (not the Done button)
Type following string: ~disableScreensaver and press Enter.
Now we launch kindle’s web browser by pressing Menu > Experimental > Web Browser.
You have to enter the url address
http://rpi_ip_address:1212/email. I advise you to save the address immediately as a bookmark to prevent entering the address in future which is painful on the kindle’s virtual keyboard.