Users opt-in by texting the keyword ‘CDE’ or ‘cde’ to my Twilio number [+18325367844] from their mobile phone. They immediately receive an auto-reply confirmation: ‘You are now subscribed to updates from Casa De Encuentro. Msg & data rates may apply. Message frequency varies. Reply STOP to unsubscribe. Text HELP for more info.’ This double opt-in process via the handset confirms explicit written consent. No initial or subsequent SMS messages are sent without the user first initiating this keyword step.