# search for Message-ID in STDIN
if type -p $FORMAIL >/dev/null ; then
msgid=$($FORMAIL -c -z -x Message-ID | head -n1)
elif type -p $REFORMAIL >/dev/null ; then
msgid=$($REFORMAIL -c -x Message-ID: | head -n1)
else
# search for Message-ID in STDIN
if type -p $FORMAIL >/dev/null ; then
msgid=$($FORMAIL -c -z -x Message-ID | head -n1)
elif type -p $REFORMAIL >/dev/null ; then
msgid=$($REFORMAIL -c -x Message-ID: | head -n1)
else