Email message headers contain tracking information for a given piece of email about the path that particular email took as it travelled to its destination. Different mail providers and email clients have different methods required in order to view the message header information.
Outlook for Windows
- Open Outlook.
- Open the message in question by double-clicking on it.
- Go to the File menu and select Properties.
- The header information will appear in the Internet headers field on the Properties window.
Outlook for Mac
- Open Outlook.
- Locate the message in question in your Inbox (or other folder).
- Right-click or Control-click on the message and then select View Source to view the header information.
- Open Outlook Express.
- Locate the message in question in your inbox.
- Right-click on top of the message and select Properties.
- Click the Details tab on the resultant Properties window.
Mail for Mac
- Open up Mail.
- Click on the message in question.
- Go to the View menu.
- Select Message and then Long Headers.
- Open Thunderbird.
- Click on View.
- Select Headers and then choose All.
- Log into Gmail.
- Open the message in question.
- Click the More drop down arrow next to Reply in the preview pane
- Select Show original.
- Log into Hotmail.
- Select the Inbox.
- Right-click on the message in question, and then select View Message Source.
- Log into Comcast Webmail.
- Right-click on the message in question to select it.
- Select View Source.
- The message headers (along with the entire message) will appear in the resultant window.
- Log into Outlook.com.
- Click on the message in question to highlight it.
- Go to the Actions menu and select View Message Source.