def subject

      unless @subject
        subject = mail.subject.strip rescue ""
        ignores = config['ignore']['text/plain']
        if ignores && ignores.detect{|s| s == subject}
          @subject = ""
        else
          @subject = transform_text('text/plain', subject).last
        end
      end

      @subject
    end
def subject

      unless @subject
        subject = mail.subject.strip rescue ""
        ignores = config['ignore']['text/plain']
        if ignores && ignores.detect{|s| s == subject}
          @subject = ""
        else
          @subject = transform_text('text/plain', subject).last
        end
      end

      @subject
    end
Return the Subject for this message, returns "" for default carrier
 subject such as 'Multimedia message' for ATT&T carrier.