1. Open http://www.ip-adress.com/trace_email/
On these pages you will be asked to enter the email header. Email header is the information in each email, such as sender and receiver IP address.
How to view email headers:
* Yahoo New Mail: Right-click on the email, select View Full Headers* Yahoo Mail Classic: Open the email, in the lower right corner there is written View Full Header.* Gmail / Google Mail: Open the email, there is an option at the top of the reply, next to Reply, there is a downward arrow, select Show Original.* Hotmail: Right-click on the email, select View Source.* Outlook Express: Open the email, open the File menu -> Properties -> Details -> Message Source* MICR * soft Outlook: just double click on the email to view in full window, open the Options menu -> View.
2. Copy-paste email headers to http://www.ip-adress.com/trace_email/, click Trace Email Sender
3. Done. You will see information like this e-mail sender. You may click the whois to see more detail.