Can I receive a notification if a scan finds ports that shouldn’t be open?

Yes, you can set up the notifications to alert you if the open ports found are other than the ones in the list you define by selecting the following condition:

Just select “Open port” with the “is” condition and click the “Not” checkbox. You can then provide a list of ports you know should be opened and you will be notified if the scan finds any other ports except those.

Please take note that the scan will only check the ports you have set, see here the full list of common ports: https://pentest-tools.com/support/default-port-list/