How to Trace Sender Information
 Log in to your Gmail account.
 Now open any email from your inbox (or the one you want to track the location)
 Click the "Show original" link on right bottom part.
 Look for “Received: from” Received: from *14.98.45.113] by 
rajhackingarticle@yahoo.com
 [14.98.45.113] can be different for every mail, as this is the IP address of the sender.
 Now to trace the sender using this ip.
Open this Site: www.aruljohn.com/track.pl