The legislation [1] is already enough to deal with email SPAM and by extension SMS. The problem is that phone & email companies conveniently have no way of know

The legislation [1] is already enough to deal with email SPAM and by extension SMS. The problem is that phone & email companies conveniently have no way of knowing who sent the spam so you can't go after them. It's an authentication problem not a cost problem. [1]: https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business https://www.ftc.gov/business-guidance/resources/can-spam-act...