Is SMS Double Opt-In Required?
- Yes, SMS double opt-in is required.
- Double opt-in for text messaging is mandatory, due to legal regulations set by the major phone carriers.
- This means subscribers must agree to the terms of service when subscribing via a lead page or web form, then they must verify the handset by responding Agree when sent the opt-in SMS message.
- Double opt-in is required by the carriers because SMS messages cost money, phone providers don't want people signing up strangers as a method of harassment.