hier das script in einer "moderneren" Form ohne Terminal.app zu öffnen…

Show Plain Text
  1. property sender : "mail@example.com"
  2.  
  3. quit application "Mail"
  4. do shell script "defaults write com.apple.mail UserHeaders " & quoted form of ("{\"Disposition-Notification-To\"=\"" & sender & "\";}")
  5. delay 2
  6. activate application "Mail"
----------
Gruss

Stefan