    # File lib/vmail/message_formatter.rb, line 134
        def utf8(string, this_encoding = encoding)
          return '' unless string
          out = if this_encoding && this_encoding.upcase != 'UTF-8'
                  Iconv.conv('UTF-8//TRANSLIT/IGNORE', this_encoding, string)
                elsif this_encoding.upcase == 'UTF-8'
                  string
                else
                  # assume UTF-8
                  Iconv.conv('US-ASCII//TRANSLIT/IGNORE', 'UTF-8', string)
                end
          out
        rescue
          "[error: #$!]"
        end