About this Add-on
From there you can click on the location and view a map of the IP hops that a message took to get to your inbox. Distance is also calculated to give you the miles or kilometers that a message traveled. It will also show the senders weather if you add a DarkSky API key. User agent, DKIM and other Authentication used by the sender. Filter by country origin, mark as junk if the message took too long or is from a country you don't trust.
This is a freemium add-on and works without paying but you can purchase an API key to unlock more features.