Outlook Express:

1. Open your Outlook Express. 

2. Right click on the E-Mail whose headers you want to view, a drop down menu will appear.

3. From the menu, choose “Properties”.

4. Click on the “Detail” tab and you will be able to see the E-Mail header.

Microsoft Outlook 2002/2003/2007:

1. Select the email and Right-click the message without opening it, then click “Options” from the drop-down menu.

2. A box called “Message Options” pops up.

3. Near the bottom of the box you’ll see a text area titled “Internet headers”.

4. Highlight the contents, then right-click. You can copy the headers and paste them into an email message or another application.

Microsoft Outlook 2010:

1. Select the email and Double-click to open the email in a new window.

2. Click on the File Button, Select Info Ribbon and click on the Properties.

3. You’ll get your Email Header in the Internet headers section.

Microsoft Outlook 2013:

1. Select the email and Double-click to open the email in a new window.

2. Click the ribbon.

3. You will get the email header as below image.

4. If you can’t find the ribbon, kindly follow below step. Open email in new windows, click FILE,

5. Click the Properties.

6. Once click Properties, will get the email header.

Mozilla Thunderbird:

1. Select the email and Double-click to open the email in a new window.

2. Go to View and click Message Source and one more new window will popped out.

3. Copy the full email header content and paste it on a email or another application.

Windows Live Hotmail/MSN:

Note: This article is refer to Windows Live Hotmail Full version.

1. Right click on the closed E-Mail and a drop down menu will appear.

2. Choose View Source on the drop down menu.

3. E-Mail header information will show in new Windows.

GMail:

1. Log into your GMail Account.

2. Open the E-Mail whose headers you want to view.

3. You will see “Reply” button on top right of the message pane.

4. Click on the little arrow pointing down next to “Reply”.

5. Select on “Show original” as images above and the E-Mail header will show in new Windows.

Yahoo! Mail:

1. Log into your Yahoo! E-Mail account.

2. Open the E-Mail whose headers you want to view.

3. Scroll down to the bottom right of the E-Mail, select on “Full Headers”.

4. E-Mail header information will show in new Windows.

Apple Mail:

1. Click at the selected email.

2. Click at View > Message > Long Headers

3. Copy the entire information and paste it at notepad for us to analyze.