[Dovecot] Where'd the Mail Go?

[John Reddy]

Hi;
I ran this:
echo "Hello me" | mail -s "Dovecot test" $USER
then created a bash script:
for mbox in /var/mail/$USER /var/spool/mail/$USER ~/mbox ~/mail/* ~/*; do
  grep -q "Dovecot test" $mbox && echo "mbox: $mbox"
done
grep -q "Dovecot test" ~/Maildir/new/* 2>/dev/null && echo "Maildir: ~/Maildir"
and ran it but couldn't find where the mail went. I checked /var/mail/my_user_name and it wasn't there, either. How do I find it?
TIA,
John