possible but not in all cases.Very unlikely you will be able to doxx like it.

Yes, it's kinda difficult, but another thing that you can do, is find the sender's location, for example in Gmail...
You just, Click on more options > Show Original > And look up the part that says, "Received: From..." and there will be a IP inside a brakets, after this you trace the sender using his IP, in this Site:
http://network-tools.com/

Source:
www.shoutmeloud.com/trace-sender-in-gmail.html
http://emailsearchtool.com/
http://www.labnol.org/internet/find-person-by-email-address/13913/