I updated my Calibre this morning and added the email address of my Kindle to the configuration. So far, everything seems to be working as expected.
I have a question. I see there is a new device type for the Fire in the setup wizard, but I do not see a place to associate the device driver with the email address. How does calibre know which format to send to each device?
Right now, I have Kindle 1,2,3,4 selected.