This article explains how to find the IP address of a sender in an email you have received. The information you need can be found in the headers of the email message.

Modern email clients often hide headers. However, headers are always delivered with the message content. Most email clients provide an option to enable the display of these headers, if desired.

Internet e-mail headers contain multiple lines of text. Some lines are labeled Received followed by the IP addresses of the sender's mail server (from) and the receiving mail server (by), as in the following example:

Received: from teela.mit.edu (65.54.185.39) via mail1.aol.com using SMTP; 30 Jun 2003 02:27:02 -0000