I am not sure how this will work between "a company & a customer". But I would like filter my parents SMS, so that they can see messages from known & trusted contacts, while I can ensure that the messages from unknown sender is not spam. 95% of unknown senders are spam.
That pesky 5% can be really pesky though. Though if they naturally resort to POTS, like I would suspect, I have seen that compensate for potential shortcomings.
In the same way that a speech recognizer with 99% accuracy sounds amazing, and is a great technical achievement, is all the while still really hard to use if it misses 1 out of 100 phonemes...
