#text/html; qutebrowser %s &; test=test -n "$DISPLAY"; needsterminal;

#text/html; $BROWSER %s 2>/dev/null & disown; copiousoutput;
text/html; w3m -I %{charset} -T text/html; copiousoutput;

application/pdf; mv %s %s.pdf && i3 exec mupdf %s.pdf > /dev/null; needsterminal;

image/*; ~/.config/mutt/etc/muttimage.sh %s ; copiousoutput

#application/pdf; pdftotext '%s' -; copiousoutput; description=PDF Document;
#nametemplate=%s.pdf
#
text/plain; vim %s ;