title_body: kindle paperwhite 2 check email over 3g
upvoted_answer: If you have a Kindle Paperwhite 3G, free web browsing in 3G mode is limited. You can access only the Amazon website and Wikipedia via 3G wireless. For accessing other websites, you need to use a Wi-Fi connection. source
  For a very update-to-date answer, I suggest to ask amazon support for further info.