Hier:
~/Library/Accounts
~/Library/Containers/com.apple.mail/Data/Library/Mail\ Downloads/
~/Library/Containers/com.apple.mail/Data/Library/Preferences/com.apple.mail.plist
~/Library/Mail/
https://www.macuser.de/threads/mojave-apple-mail-von-einem-mac-auf-den-anderen-kopieren.819137/#post-10068047
~/Library/Containers/com.apple.mail/Data/Library/Mail\ Downloads/
~/Library/Containers/com.apple.mail/Data/Library/Preferences/com.apple.mail.plist
~/Library/Mail/
https://www.macuser.de/threads/mojave-apple-mail-von-einem-mac-auf-den-anderen-kopieren.819137/#post-10068047