Explanation of differences between brief Internet headers and full Internet headers in an email
Email headers are used to deliver an email message over the Internet and contain a record of the specific route taken by the email. A full email header is included in every message that you receive, but may not be visible unless choose to view the header as a full header.
For most people, a compact, brief header is enough. It contains the date, the sender's name and/or address, the subject of the message, and the addressee. In some cases, however, you may prefer to see the entire header. We have provided examples of a brief header and full header below.
Yahoo! Mail shows brief headers by default, but you can choose to view full headers anytime. (If you are reading your email using a POP-enabled email program, please refer to your email program's help files for more information about header views.) To learn how to view the full headers in Yahoo! Mail, see the help article What is the full header of an email, and how do I view it?
An example of a brief header sent from InfoBeat (http://www.infobeat.com):
From: InfoBeat <email@example.com> Add to Address Book To: ****@yahoo.com Subject: Finance - Full Closing Bell @ 08/20/97 (1 stories) Date: Wed, 20 Aug 1997 17:43:03 MDT
An example of a full header sent from InfoBeat (http://www.infobeat.com):
From firstname.lastname@example.org Mon Mar 24 15:29:00 1997 Return-Path: email@example.com Received: from key-colony.merc.com (key-colony.merc.com [18.104.22.168\) by mta0.yahoomail.com (8.0.5/8.6.12) with ESMTP id AX08764 for <****@yahoomail.com>; Mon, 24 Mar 1997 15:28:59 -0800 (PST) Received: from tahiti.prod.merc.com (firstname.lastname@example.org) by tahiti.prod.merc.com (version 3.23, queueup copyright InfoBeat, Inc. 1996,1997) with stdio id AAJVI18872; Mon, 24 Mar 1997 16:30:23 MST Message-Id: <******@tahiti.merc.com> To: ****@yahoo.com Subject: Finance - Full Closing Bell @ 08/20/97 (1 stories) MIME-Version: 1.0 Content-Type: text/html From: InfoBeat <email@example.com> Add to Address Book Priority: normal Errors-To: firstname.lastname@example.org Date: Wed, 20 Aug 1997 17:43:03 MDT Content-Length: ****