Mail (Yosemite): Show detailed message headers
When you view messages, you can show more fields in the message header, such as List-ID or Resent-From.
Show the headers: Choose Mail > Preferences, click Viewing, then select “Show additional message headers.”
Change the headers that are shown: Click Select Headers. To delete a field, select it, then click Remove . To add a field, click Add , then enter a field name.
Published Date: Feb 3, 2015
One Moment Please
Thanks for your feedback.
14% of people found this helpful.
Additional Product Support Information