USA Exceptions
Unfortunately, some features of SMS Mac are not supported for mobile number destinations in the USA. Please note that this paragraph only concerns numbers that start with +1 and are in the USA. This paragraph, for example, does not concern Canadian numbers.
For mobile number destinations in the USA, these SMS features are not supported:
- Long SMS
- Flash SMS
- Unicode SMS
Fortunately, standard normal SMS of 160 characters is fully supported.