-add_message "[id]=message-id@example.com [filename]=copy1"
-add_message "[id]=message-id@example.com [filename]=copy2"
+add_message '[id]=message-id@example.com [filename]=copy1 [date]="Fri, 05 Jan 2001 15:43:52 +0000"'
+add_message '[id]=message-id@example.com [filename]=copy2 [date]="Fri, 05 Jan 2001 15:43:52 +0000"'