I’m a little confused about where the line is drawn for SMS opt-in, regardless of the country.
Klaviyo training and experience have repeatedly shown me “Text YES to opt-in” when platforms have my number, but this is still an SMS message which I did not give consent to receive (unless it says somewhere in T&Cs that I consent to receive an opt in message).
Even if I ignore or say no, what’s stopping an organisation from sending me daily messages offering me desperately to opt in (although I’d just mark as spam).