How to find email headers:

E-mail client applications
 Opera 9.x, 10.x (Windows)
 Microsoft Outlook Express / Windows Live Mail 2009 (Windows)
 Microsoft Outlook 2000-2003 (Windows)
 Microsoft Outlook 2007 (Windows)

Websites
 Windows Live Hotmail (Internet Explorer/Firefox)
 Google Gmail (Internet Explorer/Firefox)
 Yahoo Mail - "All-New" Version (Internet Explorer/Firefox)
 Yahoo Mail - "Classic" Version (Internet Explorer/Firefox)

E-mail client instructions:

Opera 9.x, 10.x (Windows)

1. Select the email message you want to view the headers of.
2. Right click on the message, select View All Headers and Message.

Microsoft Outlook Express / Windows Live Mail 2009 (Windows)

1. Select the email message you want to view the headers of.
2. Right click on the message, select Properties.
3. Select Details tab.
4. Headers will be displayed within the Internet Headers for this message area.

Microsoft Outlook 2000-2003 (Windows)

Method #1:

1. Select the email message you want to view the headers of.
2. Right click on the message, select Options...
3. Headers will be displayed within the Internet headers area.

Method #2:

1. Open the email message you want to view the headers of.
2. On the View menu select Options...
3. Headers will be displayed within the Internet headers area.

Microsoft Outlook 2007 (Windows)

1. Select the email message you want to view the headers of.
2. Right click on the message, select Message Options...
3. Headers will be displayed within the Internet headers area.

Website Instructions:

Windows Live Hotmail (Internet Explorer/Firefox)

1. Select the email message you want to view the headers of.
2. Right click on the message, select View message source.

Google Gmail (Internet Explorer/Firefox)

1. Open the email message you want to view the headers of.
2. Click on the little down arrow next to the Reply link, select Show Original.

Yahoo Mail - "All-New" Version (Internet Explorer/Firefox)

1. Select the email message you want to view the headers of.
2. Right click on the message, select View Full Headers.

Yahoo Mail - "Classic" Version (Internet Explorer/Firefox)

1. Open the email message you want to view the headers of.
2. Scroll down to the bottom of the message.
3. Click Full Headers on the right of the window.