Every single email is made up of two parts, the body and the header. The body is the part that users always see as it is the actual content of the email. The header, which requires additional steps to see, provides a detailed log of the network path taken by the email between the mail sender and the mail receiver(s).
Email headers are useful for our support team as they provide information that helps us to discover how to help you resolve the issue you are experiencing. For instructions on how to get email header information, by client, see the links below: