I know:(, sorry. Reason is I'm using Twilio for the text messages and non-US numbers are really expensive. Since I'm not trying to monetize it I want to make sure that I am able to fund it out of my pocket.
For example, a user who has AT&T can receive a text by emailing it to <phonenumber>@txt.att.net.
https://lifehacker.com/5506326/how-can-i-send-an-email-via-t...