construct (MailFactory)

    # File lib/mailfactory.rb, line 175
      def construct(options = Hash.new)
        if(options[:date] == nil)
          options[:date] = true
        end

        if(options[:messageid])
          # add a unique message-id
          remove_header("Message-ID")
          sendingdomain = get_header('from')[0].to_s()[/@([-a-zA-Z0-9._]+)/,1].to_s()
          add_header("Message-ID", "<#{Time.now.to_f()}.#{Process.euid()}.#{String.new.object_id()}@#{sendingdomain}>")
        end

        if(options[:date])
          if(get_header("Date").length == 0)
            add_header("Date", Time.now.strftime("%a, %d %b %Y %H:%M:%S %z"))
          end
        end

        # Add a mime header if we don't already have one and we have multiple parts
        if(multipart?())
          if(get_header("MIME-Version").length == 0)
            add_header("MIME-Version", "1.0")
          end

          if(get_header("Content-Type").length == 0)
            if(@attachments.length == 0)
              add_header("Content-Type", "multipart/alternative;boundary=\"#{@bodyboundary}\"")
            else
              add_header("Content-Type", "multipart/mixed; boundary=\"#{@attachmentboundary}\"")
            end
          end
        end

        return("#{headers_to_s()}#{body_to_s()}")
      end