mutt/.mime.types

   1 application/epub+zip epub
   2 application/gzip gz
   3 application/metalink4+xml meta4
   4 application/pdf pdf
   5 application/zstd zst
   6 image/jpeg jpeg jpg
   7 image/jxl jxl
   8 image/png png
   9 image/webp webp
  10 image/x-djvu djvu
  11 image/x-portable-anymap pnm
  12 image/x-portable-arbitrarymap pam
  13 image/x-portable-bitmap pbm
  14 image/x-portable-floatmap pfm
  15 image/x-portable-graymap pgm
  16 image/x-portable-pixmap ppm
  17 image/x-xpixmap xpm
  18 text/info info
  19 text/plain txt