A2P-10DLC Opt-in Process
Last Updated: July 2026
Operated by Sentry AI Technology LLC (d/b/a Sentry Plumbing). Contact: support@sentry-plumbing.com · sentry-plumbing.com
Introduction
To comply with Twilio and A2P 10DLC Campaign requirements, the below transactional opt-in processes have been put into place. No marketing SMS messages are ever sent to our users.
Scenario 1 – Sentry Plumbing Users
Method: Web Form
Sentry Plumbing users are customers of the Sentry Plumbing application. These users will receive application-generated messages notifying them of newly scheduled appointments, customer inquiries the AI chatbot does not have a standard response for, and other system notifications.
Sentry Plumbing users opt in via a checkbox located in Step 1 of the onboarding process. Users have the option to manually agree to terms and conditions for receiving transactional SMS communications. The checkbox is unchecked by default and users are not required to agree to proceed with the onboarding process.
Verbatim consent language:
Scenario 2 – Sentry Plumbing User's Customers
Method: SMS Keyword Opt-in
Once Sentry Plumbing users sign up for a paid plan, they receive a Twilio phone number that they display within advertisements and promotional content. When a customer initially messages the Twilio number assigned to the user, the application sends an initial response/welcome message invoking the SMS Keyword Opt-in process.
Call to Action — example advertisement: The following illustrates how a subscriber displays their Sentry Plumbing number in advertising. The consumer always initiates contact; no messages are sent until the consumer texts first and then confirms with the OK keyword.
Joe's Plumbing — Fast, Licensed & Insured
Drain cleaning, water heaters, leak repair. Call or text us at (760) 465-0230 for services, pricing, and scheduling.
By texting this number you will receive a one-time reply from Sentry Plumbing asking you to confirm with OK before any conversational messages are sent. Msg frequency varies. Msg & data rates may apply. Reply HELP for help or STOP to opt out. Terms: sentry-plumbing.com/terms | Privacy: sentry-plumbing.com/privacy
Message Flow:
Customer: “Hello, I saw your ad on xyz.com, can I get some more information on services and pricing?”
Sentry Plumbing: “Hello, this is Sentry Plumbing. [Name]'s scheduling assistant. I can help with services, pricing & scheduling. Reply OK to proceed. Msg frequency varies. Msg & data rates may apply. Reply HELP for help, STOP to cancel, or TERMS for Terms & Privacy.”
Customer: “TERMS”
Sentry Plumbing: “Sentry Plumbing Terms of Service: https://sentry-plumbing.com/terms | Privacy Policy: https://sentry-plumbing.com/privacy”
Customer: “OK”
Sentry Plumbing: “You're now connected with [Name]'s Sentry Plumbing assistant. You'll receive responses to inquiries about available services, pricing and availability. Reply HELP for help or STOP to opt-out.”
Sentry Plumbing: “[Name] offers the following services. Service A - $100, Service B - $150, Service C - $125. [Name] has an opening as early as tomorrow at 10AM PST. Would you like to confirm that appointment time? Reply HELP for help or STOP to opt-out.”