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How to view E-mail message headers

Estimated reading time: 1 min

In this short article we will show you how to view E-mail message headers for different Webmail applications such as Horde, Roundcube and Squirrel. Webmail applications enable users to access their account E-mail from any web browser, regardless of the location or device they are using. But first, let’s find out exactly what a message header is, shall we ?

General information

The E-mail header is the source information (or source code) encapsulated within an E-mail message, which contains valuable information about how the message was encoded and by whom.

For example, it will tell you why an E-mail transmission has failed.

Here are a few pieces of information included inside the message header:

  • The server from which an incoming E-mail originated
  • The server towards an outgoing E-mail was sent
  • Intended recipient
  • IMAP, POP3, SMTP Port numbers
  • Whether the E-mail was received or rejected by the recipient’s E-mail server
  • The reason why the server rejected the E-mail, if that is the case
  • Any other information sent by the mail server

The header information may prove useful when trying to find out why a user is experiencing failed E-mail transit.

How to view E-mail message headers

Bellow you will find a step-by-step guide into revealing the information inside a message header, for various mail clients used with cPanel.

Horde (Webmail)

  1. Open your preferred web browser and enter:
    youripaddress/webmail (e.g.: 104.10.255.10/webmail)
  2. Log in with your account user name and password
  3. Select the Horde Webmail client
  4. Click on the message
  5. Finally, go to the + Other options and then select View Source

 view E-mail message headers in horde

Roundcube (WebMail)

      1. Open your preferred web browser and enter:
        youripaddress/webmail (e.g.: 104.10.255.10/webmail)
      2. Log in with your account user name and password
      3. Select the Roundcube Webmail client
      4. Double Click on the message to open it
      5. Click on the arrow on the far right side of the screen
      6. This will display the E-mail message header in a drop-down window. Click again on the arrow to hide the information.

      view e-mail message headers in roundcube

      Squirrel (Webmail)

      1. Open your preferred web browser and enter:
        youripaddress/webmail (e.g.: 104.10.255.10/webmail)
      2. Log in with your account user name and password
      3. Select the SquirrelMail Webmail client
      4. Open the message and click on View Full Header

      view e-mail message headers in Squirrel Mail

That’s about it. You might want to check out the following links and find out how to perform this task on different E-mail Clients such as Gmail or Outlook.  Until next time, take care!

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