This article explains how you can view and forward mail headers in your e-mail client.

1. Outlook
   1. Accessing the Mail Header
   2. Sending the Mail Header
2. Thunderbird
   1. Accessing the Mail Header
   2. Sending the Mail Header

1. Outlook

I. Accessing the Mail Header

To display the mail header of an e-mail, you first need to open that e-mail by double-clicking it.

Then click on "File" in the upper left corner.

Now select the menu item "Info" and then "Properties".

A new window showing the mail header opens. Here it is called "Internet headers".

II. Sending the Mail Header

There are two possibilities to send a mail header

Possibility 1:

• You open the mail header as described above, copy it into a new e-mail and send this e-mail to the person who needs the mail header.

Possibility 2:

• Open the e-mail which contains the mail header you would like to send by double-clicking it.
• Select "More" and then "Forward as Attachment".

• Now add the recipient of the e-mail and click "Send"

2. Thunderbird

I. Accessing the Mail Header

First open the e-mail whose mail header you would like to access by double-clicking it.

Next, klick on "More" and select "View Source".

A new window showing the mail header opens.

II. Sending the Mail Header

There are two possibilities to send the mail header:

Possibility 1:

• You open the mail header as described above, copy it into an e-mail and send it to the person who needs it.

Possibility 2:

• Right-click on the e-mail in question.
• Then select "Forward As" and choose "Attachment".

Now add the recipient and send the email.