Viewing e-mail message headers

To view the full mail headers, open the corresponding message, and follow the instructions below:

Webmail Classic:

• Click on the Show headers button.
  
  

Roundcube:

• Click on the Details link.
• Click on the All headers... link.
  
  

Outlook Express:

• On the File menu, click Properties.
• Click the tab labeled Details.
  
  

Thunderbird:

• On the View menu, click Message Source.
  
  

Entourage:

• On the View menu, click Options.
• Click the section labeled Internet Headers.
  
  

Microsoft Outlook 2003:

• On the View menu, click Options.
• Click the section labeled Internet Headers.
  
  

Microsoft Outlook 2007:

• On the Options menu, click Internet Headers.
  
  

Microsoft Outlook 2010:

• Click on File -> Info -> Properties.
• On the Properties window, locate the Internet headers box.
  
  

Mail for Mac:

• On the View menu, click Message.
• Click All Headers.
  
  

Windows Mail:

• On the File menu, click Properties.
• Click the tab labeled Details.
  
  

Windows Live Mail:

• Right-click the message and click View source.
  
  

Gmail:

• Click the More button in the top right corner (three vertically aligned dots) > Show original.
  
  

Hotmail.com / Outlook.com / Live.com:

• Click the More actions button in the top right corner of the message (three horizontally aligned dots) > View > View message source.
  
  

Yahoo Mail:

• Click the More button at the top of the message (three horizontally aligned dots) > View raw message.