On this page: How to view email headers in outlook, mac mail, thunderbird and gmail.
outlook
1. Double-click an email message to open it outside of the Reading Pane.
2. In the top menu, find and click File > Properties.
3. The Header information appears in the Internet headers box.
Tip: You can highlight the information in that box, press Ctrl+C to copy, and paste it into Notepad or Word to see the entire header at once.
2. In the top menu, find and click File > Properties.
3. The Header information appears in the Internet headers box.
Tip: You can highlight the information in that box, press Ctrl+C to copy, and paste it into Notepad or Word to see the entire header at once.
mac mail
thunderbird
