# File lib/rfilter/delivery_agent.rb, line 119
    def save(folder, continue = false)
      log(2, "Action: save to #{folder.inspect}")
      retval = if folder =~ %{(.*[^/])/$}
                 deliver_maildir($1, @message)
               else
                 deliver_mbox(folder, @message)
               end
      raise DeliverySuccess, "saved to mbox #{folder.inspect}" unless continue
      retval
    end