Twilio SMS API can't receive...SMS

Careful! I was using the Twilio SMS API for the MVP of Gentle Finance, and I realized too late that Canadian and US numbers can't receive sms from international numbers! Since part of my user base is located in France, that was a bummer.

On this page of the Twilio documentation, they say that receiving SMS from a non +1 number may or may not work, unreliably. Their recommendation is to use WhatsApp instead.