It depends on the target market. In Latin America for example nobody would bat an eye at WhatsApp as your single channel since it’s the defacto SMS. In some E

It depends on the target market. In Latin America for example nobody would bat an eye at WhatsApp as your single channel since it’s the defacto SMS. In some European countries (Poland comes to mind) this would be weird since WhatsApp has much lower penetration giving it up to Facebook Messenger et al