The date that the message is sent is automatically added. The subject of the message is a short header that tells the recipient what the message is about. It is very important. I'll give you some examples next. Finally, the header often lists the files that are attached.
Headers Let's look at two messages.
Both are from Bill and are sent to Vanessa. You can tell by looking at the header what type of information each message will contain. People who get a lot of email message use the header information to set the first level of priority in looking at the contents. They are also important when messages are filed. If Vanessa responds to Bill with just a short message in the email body, there is no context.