is this correct?

  line_count=$(wc -l < "$IN")
  if [ "$line_count" -gt "100" ]; then
    echo "Very slow requests (>10s) from $LOG" | mail -s "Very Slow Requests: $INSTANCE@`hostname`, `date`" my@email.com
  else
    mail -s "Very Slow Requests: $INSTANCE@`hostname`, `date`" my@email.com < "$IN"
  fi