It is a record/report/history of the email which covers the path from the sender to the receiver and also contains the vital information about the mail servers that it has encountered in its path.Few emails also contain digital signature to detect the tampering of the mail in the path.
What information we can get from Email headers?
As i mentioned above we can get the history of the mail and the information on the path the mail has traveled to reach us.Lets see what information we can get from it.....
1.When the sender has composed the message(Date,Time)
2.When the email was sent from the sender's PC to the mail server.(Date,Time)
3.When the email was sent from the mail server to the intended receiver.(Date,Time)
4.The type of protocol used in the entire path.
5.The PC of the sender can be identified from the Header.
6.The IP address of the sender but not always.
7.The type and the number of digital signatures on the mail I mean the type of algorithm.
8.What type of email-client the sender has used to send the mail
9.The ISP of the sender.
10.If any third party is using any tracking means.
How to view Header of an Email?
Here I have listed out not all but few of the web mail providers and email client.
Web mail providers:
1.Gmail: Login in a standard version >Open mail of your choice >Click the down arrow next to reply >Then select show original.
2.Yahoo: Login >Select the desired mail >Click on action drop down menu >Select view full header.
3.Hotmail: Login >Select Inbox >Right click on the desired mail >Select view message source.
Email Desktop Clients:
1.Outlook Express: Open it >Select the desired mail from Inbox >Right click on it and select Properties >Details.
2.Mozilla:Open it >Open the desired mail > Click view menu >Message source.
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