Examine Email Headers
Incoming email is one of the quick methods to check someone’s IP address. An email carries more than only the message, it comes along with headers that bring along key information that can also tell us from where the email is received.
But where do we find headers? If you use Gmail, first open that email you want to check headers for, then next to reply click “down arrow” and then click “Show original.” A new window will open up which will display the sender’s IP address and other information.
Enjoy 
