Header Characteristics

A single email header has some important characteristics, including perhaps the most important part of an email - this is the KEY:VALUE pairs contained in the header. Looking at the above, you can tell some of the KEY:VALUE pairs used. Here is a breakdown of the most commonly used and viewed headers, and their values:

From: sender's name and email address (IP address here also, but hidden)
To: recipient's name and email address
Date: sent date/time of the email
Subject: whatever text the sender entered in the Subject heading before sending