Some Tricks :- Every email has a header which contains the details of all the servers the email went through, starting from the senders IP, sender's ISP, intermediate routers, servers, and finally the receiver's server. Thus doing a reverse Domain name search of the originating server's IP address, we can get the details like the area, city to which the person belongs, and if u have an authorization u could get the House address,telephone no of the sender from the ISP. For doing a reverse DNS, we can use 'tracert' utility to get the details. There are softwares like Visual Route and Trace route that can do the work for you.These will tell you the details like the city and area. There is another very accurate and efficient method to trace the person in case the email id is valid and he checks his mail. There is a website called readnotify.com which allows you to send emails through it to him and as soon as the person checks the emails it starts tracing his location and tell you the details like his operating system,IP address, location and the time he saw your mail and the number of times he opened ur mail. This Shows the location of the person on a geographic map, which could be zoomed in or out. NOTE: This site gives this facility only for a limited time and after that u have to register with it or use a new email account. This site also gives you facility to send Self Destructing Mails, Which can be read only once and after that they get automatically destructed.It's a must try site for people who want to have some fun with your friends.