You can display just the basic message header (Date, From, To, and Subject), or you can display the full message header (Date, Message-id, From, Reply-To, To, Subject, X-Mailer, Precedence, X-UIDL, and Status).

1. From the Main Menu page, click Preferences under Options, Personal.
2. On the Preferences page, locate "Display Message Headers" and select Basic or Full.
3. Click the Save button.