A2P 10DLC Documentation

SMS Consent & Opt-In Documentation

How users opt into SMS communications from TackOn LLC and its products — BuildCrux, TackOn FSM, TackOn Table, and TackOn Connect.

CTIA Best Practices & A2P 10DLC CompliantUnited StatesLast updated June 20, 2026
Applies to:This SMS program is operated by TackOn LLC and applies across all TackOn LLC products — BuildCrux, TackOn FSM, TackOn Table, and TackOn Connect. Every product uses the same consent framework, the same opt-in disclosure, and the same opt-out keywords described on this page.

Program overview

Program name: TackOn LLC SMS Communications

BuildCrux is a product of TackOn LLC. This SMS program is operated by TackOn LLC and applies to BuildCrux, TackOn FSM, TackOn Table, and TackOn Connect.

Operator: TackOn LLC, the company behind BuildCrux, TackOn FSM, TackOn Table, and TackOn Connect. Federal EIN on file with TCR (The Campaign Registry).

Use case: Mixed. TackOn LLC and its products send SMS to people who have opted in, in connection with their own requests, appointments, account, and the products they use. Message categories include:

  • Demo scheduling
  • Appointment reminders
  • Customer support
  • Trial onboarding
  • Account notifications
  • Service notifications
  • Estimate reminders
  • Follow-up communications related to a user’s request

Sender:Messages are sent from TackOn LLC–managed 10DLC long codes operated under A2P 10DLC with The Campaign Registry (TCR). Each message identifies the sending product (for example, BuildCrux or TackOn FSM) in the message body.

How users opt in

A person only receives SMS after they provide their own mobile number and affirmatively opt in. Opt-in happens through one of these channels:

  • Website forms — contact, lead, or “get a quote” forms that include an unchecked SMS consent checkbox.
  • Demo requests — scheduling a product demo.
  • Account registrations — creating your BuildCrux account.
  • Appointment scheduling — booking or requesting an appointment.
  • Support requests — contacting support and asking to be reached by text.
  • Direct communications — account holders who add a phone number in their product settings and check the consent box.

In every case the consent checkbox is unchecked by default, appears directly beneath the phone-number field with the verbatim disclosure shown below, and the user must affirmatively check it. Phone collection and SMS consent are never a condition of purchase or of using any TackOn LLC product.

Available opt-in channels vary by product. Today, BuildCrux’s implemented opt-in is the in-app Settings → Phoneconsent checkbox shown below; demo-request, appointment-scheduling, and other form-based opt-ins apply to the TackOn LLC products that offer those flows. Each product’s A2P opt-in evidence reflects the channels it actually implements.

Example: in-app opt-in (BuildCrux)

  1. The user enters a phone number in a form or in product settings (for example, https://buildcrux.com/dashboard/settings).
  2. An unchecked SMS consent checkbox appears directly beneath the input, with the verbatim disclosure shown below. Saving without checking the box creates no SMS enrollment.
  3. When the user checks the box and submits, the affirmative opt-in (with a timestamp) is recorded as consent evidence.
  4. The user can opt out at any time by unchecking the box, or by replying STOP to any message. Either action stops all future sends to that number.

What the opt-in looks like

This is exactly what end users see at the opt-in point (the signup form at buildcrux.com/signup and in account settings). The checkbox is unchecked by default and appears directly beneath the optional phone-number field; the user must actively check it.

Opt-in form — as shown to users

(214) 555-0142
I agree to receive text messages from TackOn LLC regarding my request, appointments, account notifications, customer support, onboarding, and product-related communications.

Message frequency varies. Message and data rates may apply. Reply STOP to opt out and HELP for help. Consent is not a condition of purchase. Privacy Policy | Terms of Service

The empty box above represents the checkbox in its default (unchecked) state. Submitting the form without checking it enrolls no one in SMS.

Verbatim disclosure text shown to users

The following disclosure appears next to the unchecked checkbox at every opt-in point. The checkbox label is the consent statement; the user must affirmatively check it before any SMS is sent.

I agree to receive text messages from TackOn LLC regarding my request, appointments, account notifications, customer support, onboarding, and product-related communications. Message frequency varies. Message and data rates may apply. Reply STOP to opt out and HELP for help. Consent is not a condition of purchase. Privacy Policy | Terms of Service

Confirmation message after opt-in

Immediately after a user opts in, a single welcome message confirms enrollment:

TackOn LLC: You’re opted in to SMS updates about your request, appointments, and account. Msg frequency varies. Msg & data rates may apply. Reply HELP for help, STOP to opt out.

Message frequency

Message frequency varies.Messages are sent in connection with a user’s request, appointment, account, or the product they use — for example, a demo confirmation, an appointment reminder, an estimate that is ready to review, a trial onboarding tip, a support follow-up, or an account or service notification. A user only receives messages when a relevant event occurs.

Sample messages

Demo scheduling:

TackOn LLC: Thanks for requesting a BuildCrux demo. Your demo is set for Tue 6/24 at 2:00 PM CT. Reply to reschedule. Reply STOP to opt out.

Appointment reminder:

TackOn FSM: Reminder — your service appointment is tomorrow 6/21 between 9–11 AM. Reply C to confirm. Reply STOP to opt out.

Estimate reminder / follow-up:

BuildCrux: Your estimate #1042 is ready to review and approve: https://buildcrux.com/e/1042 Reply STOP to opt out.

Trial onboarding:

BuildCrux: Welcome to your trial! Create your first AI estimate here: https://buildcrux.com/dashboard Reply HELP for help, STOP to opt out.

Support follow-up:

TackOn LLC Support: Following up on your request #5567 — did we get everything resolved? Reply here, or STOP to opt out.

Opt-out and help keywords

The full A2P 10DLC keyword set is honored automatically across all TackOn LLC products:

Keyword typeRecognized wordsSystem response
Opt-outSTOP, OPTOUT, CANCEL, END, QUIT, UNSUBSCRIBE, REVOKE, STOPALL“You have successfully been unsubscribed. You will not receive any more messages from this number. Reply START to resubscribe.”
HelpHELP, INFO“TackOn LLC: Reply STOP to unsubscribe. Msg&Data Rates May Apply. Support: support@buildcrux.com”
Opt-in (resubscribe)START, UNSTOP“You are now opted back in to TackOn LLC messages. Reply STOP at any time to unsubscribe.”

Once a recipient opts out, no further messages are sent to that phone number unless the recipient explicitly opts in again by replying START or re-checking a consent box.

Message and data rates

Message and data rates from the recipient’s wireless carrier may apply to each message. TackOn LLC does not charge recipients for messages. Recipients should check their carrier plan for SMS rate details.

Supported carriers

AT&T, T-Mobile, Verizon, US Cellular, and other major US wireless carriers. Carriers are not liable for delayed or undelivered messages.

Privacy

Mobile information and SMS opt-in consent are not shared with, sold to, or transferred to any third parties or affiliates for marketing or promotional purposes. Phone numbers are used only to deliver the SMS communications described above. See our Privacy Policy for full data-handling disclosures, including the SMS sub-processors we use for message delivery.

Terms

The complete SMS Messaging Program Terms are available in our Terms of Service, Section: SMS Messaging Program Terms (A2P 10DLC).

Questions or complaints

For questions about the TackOn LLC SMS program, opt-out issues, or to report a complaint, contact us:

  • Email: support@buildcrux.com
  • Reply HELP to any message you receive from us
  • Mail: TackOn LLC — address available on request to support@buildcrux.com

This page documents the TackOn LLC SMS consent framework used across BuildCrux, TackOn FSM, TackOn Table, and TackOn Connect. It exists for two audiences: users who want to know how their phone number will be used, and TCR (The Campaign Registry) reviewers verifying our A2P 10DLC registration. The opt-in flow described above matches the production TackOn LLC products as of the “Last updated” date above.