Knowledgebase: Email
Viewing the Full Headers of an Email
Posted by , Last modified by Ashley L on 22 November 2019 02:41 PM

The Full Headers of an email (also known as the "Raw Headers" or just the "Headers") are not shown to the average email user. However, when the time comes to troubleshoot an mail delivery issues or to fight spam, the information hidden away in the Full Headers is vital.

How you show the Full Headers depend on what you use to view your email:

Windows Email Clients:

Mac Email Clients:

Webmail Clients:


Airmail

  1. Select the message you would like to view Full Headers for
  2. Go to the View menu
  3. Select View Raw Source
  4. The Full Headers will appear in a new window


Apple Mail

  1. Select the message you would like to view Full Headers for
  2. Go to the View menu
  3. Select Message, then Raw Source
  4. The Full Headers will appear in a new window


Outlook (for Windows)

  1. Double click the message you would like to view Full Headers for
  2. Select the Info tab
  3. Click the Properties button
  4. The Full Headers will appear in the Internet headers field


Outlook (for Windows - older versions)

  1. Double click the message you would like to view Full Headers for
  2. Go to the View menu
  3. Select Options
  4. The Full Headers will appear in a new window

Outlook (for Mac)

  1. Select the message you would like to view Full Headers for
  2. [control] + click (or right click) the message
  3. Select View Source
  4. The Full Headers will appear in a new window


Postbox

  1. Select the message you would like to view Full Headers for
  2. Go to the View menu
  3. Select Message Source
  4. The Full Headers will appear in a new window


Thunderbird (for Windows)

  1. Double click the message you would like to view Full Headers for
  2. Click the Other Actions button
  3. Select View Source
  4. The Full Headers will appear in a new window


Thunderbird (for Mac)

  1. Select the message you would like to view Full Headers for
  2. Go to the View menu
  3. Select Message Source
  4. The Full Headers will appear in a new window


Horde

  1. Double click the message you would like to view Full Headers for
  2. Click the View Source link
  3. The Full Headers will appear in a new window


RoundCube

  1. Double click the message you would like to view Full Headers for
  2. Click the small "Toggle raw message headers" triangle
  3. The Full Headers will appear in a panel


SquirrelMail

  1. Click the subject link in the message you would like to view Full Headers for
  2. Click the View Full Header link in the message Options
  3. The Full Headers will appear in a new window

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