The mail header is a piece of text coming with your e-mail message that carries information about that message. You can use it to try and find out the message path, or to troubleshoot issues with sending/reaching the recipient. The headers are a piece of code, so most mail clients will not show them by default. To uncover them, follow the steps in the tutorial bellow:
- Open your Mac Mail App.
- Select a message from your inbox and open it.
- On your menu at the top, click on ‘View’.
- From the dropdown menu go to “Message” and then choose “All headers”.
- Return to the opened message and on the right you can see the details of the header.
