1. Open Apple Mail.
2. Double-click to open the email message.
3. Choose View at top menu and select Customize Toolbars.
4. Drag the Full Headers or Long Headers icon into your toolbar and save changes.
1. Select your message.
2. Click View -> Message -> Long Headers
Matt is an Internet Specialist for a multinational franchise. Matt has lived and worked in Hawaii, Chicago, South Florida and currently resides outside of Atlanta. He enjoys his hobbies including: Fountain Pens, Wetshaving, Clocks, Antiques & Coffee. He even roasts his own coffee weekly.