docker compose -f /opt/mailcow-dockerized/docker-compose.yml exec mysql-mailcow mysql -u mailcow -p mailcow -e 'UPDATE quarantine SET notified=0;'

This resets the notified flag on every quarantine row so the next notification round reports all of them. It is the MySQL half of Mailcow's documented quarantine re-notification procedure. It affects the whole table, so users will receive digests again.