tranfer mail app to another mac
Copy the contents of ~/Library/Mail/ and the mail preferences file ~/Library/Preferences/com.apple.mail to the same locations on the other Mac. Just for clarification… I moved com.apple.mail.plist since that was the only thing in there that resembled com.apple.mail Yep, that worked! I moved com.apple.mail.plist since that was the only thing in there that resembled com.apple.mail