text/html;       ~/.mutt/mutt_bgrun qutebrowser %s; test=test -n "$DISPLAY"; nametemplate=%s.html
text/html;       w3m -I %{charset} -dump %s -T text/html -cols "$COLUMNS" -o display_link_number=1; copiousoutput; nametemplate=%s.html
image/*;         ~/.mutt/mutt_bgrun feh %s;
application/pdf; ~/.mutt/mutt_bgrun okular %s;
application/*;   ~/.mutt/mutt_bgrun mimeo %s;