# File lib/vmail/message_formatter.rb, line 98
    def format_html_body(part)
      html_tool = ENV['VMAIL_HTML_PART_READER'] || 'lynx -stdin -dump'
      html = part.body.decoded.gsub("\r", '')
      stdin, stdout, stderr = Open3.popen3(html_tool)
      stdin.puts html
      stdin.close
      output = "[vmail: html part translated into plaintext by '#{html_tool}']\n\n" + stdout.read
      charset = part.content_type_parameters && part.content_type_parameters['charset']
      if charset && charset != 'UTF-8'
        Iconv.conv('UTF-8//TRANSLIT//IGNORE', charset, output) 
      else
        output
      end
    end