("multipart/alternative" 0
 ("text/plain" 0
  "  ... plain text version of message goes here ...\n")
 ("text/enriched" 1
  "  ... RFC 1896 text/enriched version of same message
      goes here ...\n")
 ("application/x-whatever" 2
  "  ... fanciest version of same message goes here ...\n")
)
