Unless someone else chimes in with a better idea, you should be able to find the msg id for the email and then you can script the delete process.
Something like...
Code:
# Get all Accounts
zmprov gaa | grep mydomain.com$ > /tmp/temp_file
# Delete message in each account with the matching msg id
for acct in `cat /tmp/temp_file` ; do
"zmmailbox -a <admin> -p <password> -m $acct dm <msg id>
done
# Remove temp_file
rm -f /tmp/temp_file You can probably grep for the message is
grep phrase <path/to/store/> -R *
I believe is the right syntax.