Sign up ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

How can I view the source of an email in Outlook 2013?

I want to see the exact email source, as I can do in Gmail or in Mozilla Thunderbird. I'm particularly interested in the top matter (headers?). Here's an example, courtesy Gmail.

Received: by with SMTP id hx9csp12093igb;
        Wed, 19 Sep 2012 01:36:43 -0700 (PDT)
Received: by with SMTP id w5mr1607897qct.21.1348043802480;
        Wed, 19 Sep 2012 01:36:42 -0700 (PDT)
Return-Path: <>
Received: from ( [])
        by with ESMTP id 5si930058qcy.70.2012.;
        Wed, 19 Sep 2012 01:36:42 -0700 (PDT)
Received-SPF: pass ( domain of designates as permitted sender) client-ip=;
Authentication-Results:; spf=pass ( domain of designates as permitted sender)
Date: Wed, 19 Sep 2012 01:36:41 -0700
From: Louis <>
Reply-To: rg3/youtube-dl <>
To: rg3/youtube-dl <>
Message-Id: <rg3/youtube-dl/issues/355/>
In-Reply-To: <rg3/youtube-dl/issues/>
References: <rg3/youtube-dl/issues/>
Subject: Re: [youtube-dl] Youtube Download Slows Down after 10 seconds (#355)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary=mimepart_50598419db896_3241ecda741010
Precedence: list
List-Id: rg3/youtube-dl <>
List-Post: <>
X-Github-Reason: comment
List-Unsubscribe: <>

Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: Quoted-printable
Content-Disposition: inline
share|improve this question
Similar question was once asked at Microsoft's Technet, but wasn't understood… – Colonel Panic Sep 19 '12 at 10:51

4 Answers 4

up vote 126 down vote accepted


  1. Open the particular email in a new window by double-clicking on the message in the message list. (This is important, it's not enough to be just looking at the message in what Outlook calls the 'reading pane'.)
  2. Follow the menu File | Info | Properties
  3. Look for a text area labelled internet headers
  4. Here are the headers. Select and copy the text to a text editor.


  1. Open message in a new window
  2. On the Message ribbon, select Action | Other actions | View source.
share|improve this answer
You can also get the Content ("View source") by right-clicking the body of the message and choosing "View source". – Curtis Yallop Jul 31 '14 at 15:45
Note that "View source" will be greyed out for text-only messages. – Chris Sep 9 '14 at 14:48
Note that this only includes the content outlook is displaying. If a email has both html and text, you can't see the text version. – bradlis7 Nov 13 '14 at 20:37
This one still does not show the embedded base64 images. – kaptan Dec 18 '14 at 1:01
How can I show the public key that has been used for signing? – maja Oct 10 at 9:59
  1. Open message in new window
  2. On the Message tab select Actions dropdown (next to Move button)
  3. Select Other ActionsSource
share|improve this answer
In Outlook 2013, this gives me the source of the message body, but not the header. – Highly Irregular Mar 10 '14 at 3:00
@HighlyIrregular is correct. All you see is the raw HTML that corresponds to the BODY of the email, but not the internet headers. The accepted answer by colonelPanic is correct. – Knox Mar 12 '14 at 15:37
I think the two answers together are correct, one for the headers and the other for the body. – David Thielen Oct 17 '14 at 11:36


Is File - Info - Properties not working to display the headers?

This answer is from here:

Make Available the Complete Message Source in Outlook

To set up Outlook so you can see the complete source of emails:

Press Windows-R
Type "regedit".
Hit Enter.
For Outlook 2013:
    Go to HKEY_CURRENT_USER\­­Software\­­Microsoft\­­Office\­­15.0\­­Outlook\­­Options\­­Mail. 

Select Edit | New | DWord from the menu.
Type "SaveAllMIMENotJustHeaders".
Hit Enter.
Double-click the newly created SaveAllMIMENotJustHeaders value.
Type "1".
Click OK.
Close the registry editor.
Restart Outlook if it has been running. 

See the Complete Source of a Message in Outlook

Now you can retrieve the source of newly retrieved POP messages (editing the SaveAllMIMENotJustHeaders value does not restore the complete message source for emails that were already in Outlook):

Click on the desired message with the right mouse button in the Outlook mailbox.
Select Options... from the menu.
Find the message source under the (now improperly named) Internet headers: section. 
share|improve this answer
Thanks Riscie, I followed the instructions and the menu item appeared. However this only shows me the HTML source for the message content, not the top matter or headers. I've clarified my question above. – Colonel Panic Sep 19 '12 at 10:22
@ColonelPanic - The internet header information listed in Message Options is the content your looking for. – Ramhound Sep 19 '12 at 11:21
This does not work for me. The "message header" option simply toggles showing the From, To, and Subject at the top of the message. The view source option, and the actions->view in browser then viewing that source, both show the cleaned up HTML by outlook, not the original message source – chiliNUT Nov 6 at 17:33
This is the only 100% correct answer. Where you could only check message headers, now you can check the whole raw content (attachments, boundaries, resources headers, charsets, etc.) - and this is waaaay different than viewing the message source. – Charles Roberto Canato yesterday

The add-on Message Header Analyzer for Outlook 2013 and Outlook Online provides a well-formatted overview.

Message Header Analyzer

share|improve this answer

protected by Community Jul 16 '14 at 3:21

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.