Looking at Apple's Mail: Show detailed message headers, it sounds like I shouldn't be seeing Resent-from headers, because I have the View->Show message headers preference set to "Default."

The support page sounds like I should need to use Custom to ever see Resent-from.

How can I turn off the Resent-from header?

I also tried setting the preference to Custom... without adding any headers at all, and nothing changed.

My Mac is running OS X 10.10.5, Yosemite.


Visit https://support.apple.com/kb/PH19118?locale=en_US The following reads:

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.

  • That's the same support document I noted. I don't have "Show additional message headers" under Viewing, but I can choose Show message headers: Default/Custom... Whether i choose Default, or choose Custom with no headers at all selected in the popup, the Resent-from header is displayed. – Joshua Goldberg Feb 1 '17 at 16:10

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