@PedroGaVal
In general, the required fields are
Alerts: Mail Server Hostname: <mail server host>
Alert: Mail From Address: noreply@localhost
Alerts: Mail Message Recipients: <email>
and below are optional
Alerts: Mail Server Username: <optional>
Alerts: Mail Server Password: <optional>
Note: This is an enterprise level setup and I didn't get a chance to explore from quickstart VM