If you have a basic unmanaged network with a router provided by your ISP, you will likely need to configure nothing. Most firewalls in a standard configuration will allow a stateful connection.
These Outbound TCP Ports need to be unrestricted depending on the chosen email service/configuration.
All of the below services are designed to work on your internal network. This information is provided in case you have security between Mondopads on your internal network that would prevent this communication. Otherwise it’s not likely you will need to make any network configuration changes to use these services.