instance method get_status

# File actionmailer/lib/action_mailer/vendor/tmail-1.2.7/tmail/port.rb, line 233
    def get_status( tag )
      File.foreach(@filename) {|line|
        return false if line.strip.empty?
        if m = /\AX-TMail-Status:/i.match(line)
          return m.post_match.strip.include?(tag[0])
        end
      }
      false
    end