How to Opt out of Text Messages:
Have them reply to the last text message they received and text "STOP" to be removed from future text messages.
How to Opt back in for Text Messages:
Have them reply to the last text message they received and text "UNSTOP" to be receive future text messages again.
Note: When customers sign up to enable Text Messages, they are provided this information via the Terms and Conditions they consent to a the time of entering their mobile number.