This page documents the complete end-user opt-in workflow for the HDH Tech Support SMS messaging program. Our messaging program is a customer care program — we send SMS messages only about an open support request. We do not send marketing, promotional, or advertising messages.

Opt-In Method: Public Web Form

End users opt in by visiting our publicly accessible web form at https://hdhtechsupport.com/sms-opt-in, entering their mobile number, and actively checking the SMS consent box. The form is reachable without an account or login. The checkbox is unchecked by default and is never pre-selected. Pre-checked boxes are never used.

Secondary Opt-In: In-Portal Support Request Form

Registered technicians can also opt in while submitting a support request in the portal. That checkbox is also unchecked by default, states the same disclosures, and is optional — consent is not required to submit a support request or to receive support. This form sits behind a login; the public web form above is the primary, publicly verifiable opt-in method.

Required Disclosures Present in the Opt-In Flow

• Program purpose: Customer care / technical support only — no marketing or promotional messages.
• Message frequency: "Message frequency varies" — typically 1–10 messages per ticket over its lifecycle.
• Message & data rates: "Message and data rates may apply" is stated directly in the opt-in text and the confirmation text.
• Opt-out instructions: "Reply STOP to cancel" is stated directly in the opt-in text and every message.
• Help instructions: "Reply HELP for help" is stated directly in the opt-in text and every message.
• Resubscribe: Users who have opted out may reply START to opt back in.
• Double opt-in: The number is enrolled only after the phone owner replies YES to the confirmation prompt. Enrollment is never completed from a web form alone.
• Active consent: Checkbox is unchecked by default; the user must actively check it, and a separate checkbox covers the Privacy Policy and Terms.
• Not a condition of service: Consent is not required to receive support — the customer may communicate by phone or in the portal instead.
• Linked legal pages: The opt-in text links directly to the Privacy Policy and Terms & Conditions, which contain the full SMS program disclosures and the non-sharing-of-mobile-data statement.

Opt-Out & Keyword Handling

Once enrolled, the end user may opt out at any time using the following standard keywords, processed by our inbound SMS webhook:

• STOP, STOPALL, UNSUBSCRIBE, CANCEL, END, QUIT, HALT — Immediately unsubscribes the user. No further messages are sent, and the user receives: “You have successfully been unsubscribed. You will not receive any more messages from this number. Reply START to resubscribe.”
• HELP, INFO — Returns a help message with opt-out instructions and support contact information.
• START, YES, UNSTOP — Resubscribes a previously opted-out user to the messaging program.
• All keywords are case-insensitive and processed the same way across our campaign registration, sample messages, and this application.

Related Documents

• SMS opt-in form — the live public opt-in page.
• Privacy Policy — full SMS program disclosures, data collected, non-sharing statement.
• Terms & Conditions — SMS messaging program terms.