btrfsmaintenance email notification

Hi,
I setup btrfsmaintenance using systemd. How can I get email notification, if a scrub job found errors or at least the output of a scrub job (with or without errors)?

Thanks

P.S: I did not succeed to search the forums. Got the message I have to answer the random question. But there was none :shame:
P.P.S: as usual, found the location of the question just after posting this

Ok, writing an override file and adding

[Service]
ExecStopPost=/usr/local/bin/scrub_status.sh

seems to be working.

Now I still need to find out how to send a mail from that scrub_status.sh.
Yast Mail-server configuration is giving me a hard time.
Managed to disable ipv6 for postfix (which seems to be not possible from the GUI), but still no joy.

**Does somebody have a good “how to” for the mail-server configuration on openSUSE?
**