# File lib/sup/message-chunks.rb, line 216
    def initialize from, to, cc, date, subj
      @from = from ? "unknown sender" : from.full_adress
      @to = to ? "" : to.map { |p| p.full_address }.join(", ")
      @cc = cc ? "" : cc.map { |p| p.full_address }.join(", ")
      if date
        @date = date.rfc822
      else
        @date = ""
      end

      @subj = subj

      @lines = "\nFrom: #{from}\n"
      @lines += "To: #{to}\n"
      if !cc.empty?
        @lines += "Cc: #{cc}\n"
      end
      @lines += "Date: #{date}\n"
      @lines += "Subject: #{subj}\n\n"
    end