Final answer:
The Xfinity Connect app's capability to send and receive messages for free usually restricts to the country of your account registration due to regulatory and commercial boundaries. The exact number of countries isn't specified by Xfinity.
Step-by-step explanation:
The number of countries to which you can send and receive messages for free via the Xfinity Connect app depends on the service plan you are subscribed to. Xfinity hasn't explicitly stated the number of countries their Connect app supports for free messages, but it's usually operationally limited to the country where you've registered your account because of regulatory and commercial constraints. Ensure to consult the official providers for exact information.
Learn more about Xfinity Connect App