mutt/.mime.types

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