How to Get SMS Consent from Existing Customers

July 31, 2025

Texting your customers without their permission can cost you big - up to $1,500 per violation under U.S. law. The Telephone Consumer Protection Act (TCPA) requires businesses to get explicit consent before sending marketing texts. This isn't just about avoiding fines; it's about respecting your customers and building trust. Here’s what you need to know:

  • Consent is mandatory: Written permission is required for promotional texts, while transactional messages need at least verbal agreement.
  • Re-permissioning is key: If you already have customer contact info, ask them again - via text, email, or in-person - to confirm they want your messages.
  • Double opt-in works best: Send a follow-up text asking customers to confirm their subscription for better engagement and fewer complaints.
  • Keep records: Document when, where, and how consent was given to stay compliant and protect your business.

Managing this process manually can be overwhelming, but tools like My AI Front Desk can automate consent tracking, opt-ins, and opt-outs while integrating with your CRM. This ensures you're compliant and keeps your customers happy.

Understanding the legal framework for SMS consent is essential for businesses that want to connect with their customers through text messaging. Federal laws lay out clear rules on how to collect and manage customer consent, ensuring compliance and minimizing risks.

The Telephone Consumer Protection Act (TCPA) is the cornerstone of SMS marketing regulations in the U.S. Passed in 1991, the TCPA governs telemarketing, text messaging, and the Do-Not-Call list. It requires businesses to obtain clear, written consent - either electronically or on paper - for recurring marketing messages. This consent must include specific details about the use of autodialers, opt-out methods, and restrictions on sending messages outside the hours of 8:00 AM and 9:00 PM in the recipient’s local time zone.

In addition to the TCPA, CTIA guidelines offer supplementary standards for SMS marketing that align with federal laws. The CTIA, a trade association representing wireless carriers and telecom companies, advises against sending messages containing SHAFT-related content (sex, hate, alcohol, firearms, or tobacco).

These regulations provide a foundation for understanding the types of messages businesses send and the level of consent required for each.

Transactional vs. Marketing Messages

Not every text message needs the same level of consent. The TCPA and FCC classify messages into three categories: promotional, transactional, and conversational.

  • Marketing (Promotional) Messages: These require express written consent and are aimed at promoting products, increasing sales, or building brand awareness. Examples include coupons, discounts, product launches, sweepstakes, and fundraising requests.

    "Promotional messages are sent with the purpose of increasing sales, promoting your product, or raising awareness about your business... You must have permission from your contacts before you text them. Specifically, express written consent is required to send promotional texts."

  • Transactional Messages: These provide time-sensitive updates necessary for customers to use a product or service. While these messages require consent, it doesn’t always need to be in writing - though obtaining written consent is considered a best practice. Examples include order confirmations, shipping updates, password resets, and appointment reminders.
  • Conversational Messages: These occur when a customer initiates a conversation, and the business responds with relevant information. Implied consent is typically sufficient for this type of communication.

Interestingly, research shows that 75% of consumers are interested in receiving special offers, discounts, and coupons via SMS. When done right, SMS campaigns can achieve a 14% conversion rate.

Risks of Non-Compliance

Failing to comply with SMS consent laws can be costly. TCPA violations carry fines ranging from $500 per violation to $1,500 for willful violations, with some settlements reaching tens of millions of dollars.

The consequences don’t stop at fines. Non-compliance can lead to lawsuits, carrier blocking (where wireless providers refuse to deliver your messages), damage to your brand’s reputation, and heightened regulatory scrutiny. To avoid these pitfalls, businesses should:

  • Keep detailed records of consent, including when and how it was obtained, the exact wording of the agreement, and recipient details.
  • Regularly update contact lists against the National Do Not Call Registry and state DNC registries.

With these risks in mind, the next section will dive into how businesses can secure SMS consent from their existing contacts.

When it comes to texting your current customers, it’s essential to follow the rules and secure proper consent. This means asking for clear permission to send texts that go beyond any initial interactions or agreements.

Re-Permissioning Existing Contacts

If you want to send SMS messages outside the scope of the original consent, you’ll need to re-permission your existing contacts. Just because a customer has agreed to receive emails or made a purchase doesn’t mean they’ve agreed to receive text messages.

  • Direct SMS Requests: Send a single, straightforward message to your contacts, asking them to confirm their interest in receiving future texts. Be clear about what kind of messages they can expect and how often you’ll send them.
  • Email Campaigns: Use email to guide customers to a mobile-friendly SMS consent form. Since you likely already have email consent, this is a great way to introduce your SMS program. Include a clear call-to-action that directs them to the opt-in form.
  • In-Person Collection: For businesses with physical locations, you can gather consent in person. Use tablets or paper forms at checkout or during appointments, making sure the form includes opt-in and opt-out details. Record key information like the date, time, campaign type, and the customer’s phone number and name.

After collecting consent, confirm their choice using a double opt-in process.

Using a Double Opt-In Process

A double opt-in process adds an extra layer of security and ensures that the person signing up truly wants to receive your texts. Here’s how it works: once a customer provides their phone number and consent, they receive a confirmation message. They’ll need to reply with a specific keyword or click a link to complete their subscription.

This approach helps verify that the phone number belongs to the person opting in and that they genuinely want to hear from you. While it may slightly lower the number of sign-ups, the contacts you gain are typically more engaged and reliable. After the initial opt-in, send a confirmation text with clear instructions and a response deadline (usually 24 to 48 hours). If they don’t confirm, their contact information is removed.

Keeping detailed records of consent is critical. For every opt-in and opt-out, document the date, time, method, and exact wording of the consent [8, 13, 14].

Your system should capture:

  • Timestamps: These show when consent was provided, which is crucial if there’s ever a dispute.
  • Method of Consent: Note whether the consent came through a web form, text message, phone call, or in-person interaction.
  • Consent Language: Preserve the exact wording used, including any disclosures about message frequency or potential charges.

It’s equally important to track opt-out requests. Record when a customer opts out and make sure their preferences are processed promptly. Use your CRM to store these details, ensuring you have a reliable record of every interaction. This not only keeps you compliant but also shows customers that you respect their choices.

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Designing an SMS consent form isn’t just about collecting phone numbers - it’s about meeting legal requirements while being upfront with customers about what they’re signing up for.

Required Elements for Compliance

To comply with U.S. regulations, your SMS consent form must include specific details. Under the TCPA, businesses need prior express written consent before sending automated marketing texts. This means your form must be clear, detailed, and transparent.

Here’s what you need to include:

  • State the purpose of the messages clearly. Don’t just say “receive updates.” Be specific - are you sending promotional offers, appointment reminders, order confirmations, or company news? Any message that goes beyond purely informational content is considered marketing.
  • Specify message frequency. Let customers know how often they’ll hear from you. For example, will you send daily deals, weekly newsletters, or occasional promotions? Avoid vague phrases like “periodic messages.” Be precise - daily, weekly, or monthly.
  • Provide opt-out instructions. The FCC’s 2024 rules require businesses to honor opt-out requests within 10 business days. Make it clear how customers can unsubscribe - whether it’s replying “STOP” or using another method. The process should be simple and easy to follow.
  • Link to your terms of service and privacy policy. Make sure subscribers can easily access these documents. They should explain how their phone number will be stored, used, and protected, as well as outline the types of messages, frequency, and sender details.

Using clear, straightforward language is just as important as including these elements.

Clear and Simple Language

Even with all the right details, overly complex language can confuse customers and hurt sign-ups. Keep your consent form simple and easy to understand - no legal jargon needed.

Instead of saying, “By providing your mobile number, you consent to receive recurring automated promotional and personalized marketing text messages,” try something more approachable like, “Sign up to get text updates on sales, new products, and special offers.”

Be specific about what customers will receive. For example:

  • If you’re a restaurant: “Get texts about daily specials and exclusive previews.”
  • If you’re a retailer: “Receive early access to sales and alerts for new arrivals.”

Stick to short sentences and avoid industry terms that might confuse people. Use a conversational tone - write as if you’re explaining it to a friend. Remember, once consent is given, it remains in effect until the customer actively revokes it.

One common mistake is bundling SMS consent with other permissions, like email newsletters or account creation. This can create legal issues and make it harder for customers to understand what they’re agreeing to.

To avoid this:

  • Use separate checkboxes for each type of communication. For example, if you want consent for both emails and text messages, provide two distinct opt-in options with clear descriptions.
  • Ensure all checkboxes are unchecked by default. Customers should actively choose to opt in, even if you’re offering incentives like discounts or free shipping.
  • Time your consent request thoughtfully. Don’t push SMS opt-ins during the checkout process - it can feel forced. Instead, present the option after the primary action is complete, when customers can make a more deliberate choice.

Your SMS consent form should stand alone, offering a clear agreement about text messaging. When customers understand exactly what they’re signing up for and feel confident about their decision, you’ll not only stay compliant but also build a more engaged and loyal audience.

My AI Front Desk

Managing SMS consent efficiently is crucial - not just for staying compliant but also for improving customer interactions. Handling this manually can be a headache, especially for businesses with a large customer base. That’s where My AI Front Desk steps in, automating the entire process to save time and reduce errors.

Automated Texting Workflows

When it comes to managing SMS consent, automation is a game-changer. My AI Front Desk streamlines texting workflows by triggering messages based on customer actions. For example, if a customer calls your business, the AI receptionist can inform them about your text messaging service and send a follow-up consent request shortly after the call ends. Considering text messages have a 98% open rate and 95% of them are read within just three minutes, this approach ensures your messages are seen.

You can tailor these workflows to fit your business needs. A dental office might send consent requests after confirming appointments, while a retail store could do so following a purchase. The platform handles the entire opt-in process - from the initial request to sending welcome messages for new subscribers. It also processes opt-outs instantly. If a customer replies with "STOP" or uses another unsubscribe option, their status is updated immediately, ensuring compliance and quick response times.

By automating these tasks, your team can focus on what really matters: providing excellent customer service and growing your business.

To ensure compliance and keep operations smooth, My AI Front Desk integrates with over 50 popular CRMs. This integration automatically stores, organizes, and timestamps all consent data.

The platform’s Autopilot CRM not only tracks leads and consent details but also manages follow-ups while simultaneously handling calls. For businesses juggling multiple tools, My AI Front Desk connects with more than 6,000 apps via Zapier, enabling seamless workflows and data synchronization across your entire tech stack.

Analytics and Reporting

Automation doesn’t stop at organization - it also delivers valuable insights. My AI Front Desk’s analytics dashboard tracks key metrics like opt-in rates, response times, and customer engagement trends. This helps you identify the most effective consent collection methods, whether it’s during phone calls or through follow-up texts. With this data, you can fine-tune your approach to boost engagement and compliance.

The platform also includes detailed reporting features to identify compliance issues and provide consent records. Link tracking lets you monitor how customers interact with shared consent forms and other materials. Plus, you can export consent records for audits or legal documentation, ensuring your business remains protected and compliant.

Getting SMS consent isn’t just about following the rules - it’s about protecting your business and building stronger connections with your customers. Non-compliance can be costly, with fines ranging from $500 to $1,500 per violation under the Telephone Consumer Protection Act (TCPA). Beyond financial penalties, carriers might block your messages, cutting off your communication with customers.

At the heart of compliant SMS marketing is obtaining clear and independent consent. Customers need to actively agree to receive your text messages, separate from any other marketing agreements.

When reaching out to existing customers for re-permissioning, clarity is key. Let them know exactly what to expect - what types of messages you’ll send, how often, and how they can opt out if they choose. Using a double opt-in process can confirm their intent, reduce complaints, and ensure your subscriber list is full of genuinely interested people.

Keeping detailed records is another must. Document when, where, and how consent was given so you’re prepared if an audit comes your way.

Managing all of this manually can be a headache. That’s where automation tools like My AI Front Desk come in handy. These tools can automate texting workflows, integrate with your CRM to track consent, and provide analytics dashboards. They also handle opt-outs instantly and keep timestamped consent records, saving your team time and effort.

When you manage SMS consent properly, you’re not just staying compliant - you’re building trust. Customers who know they’ve explicitly agreed to hear from you and can easily opt out are more likely to engage with your messages. A compliant process lowers legal risks, boosts trust, and makes your marketing more effective. By adopting these practices, you can create a win-win for your business and your customers.

FAQs

To set up a double opt-in process for SMS consent, start by sending an initial message that clearly outlines what customers are agreeing to. This message should include details about the type of texts they’ll receive and any terms or conditions they need to know. Once they consent, send a follow-up message asking them to confirm by replying with a specific keyword (like "YES") or clicking a verification link.

This two-step approach ensures explicit consent, keeps you aligned with regulations, and helps build stronger, more engaged customer relationships.

How can businesses comply with TCPA and CTIA guidelines for sending SMS messages?

To meet TCPA and CTIA regulations, businesses are required to secure prior express written consent from customers before sending out promotional SMS messages. This means being upfront about the purpose of the messages and including a simple, user-friendly opt-out option in every text.

Additionally, businesses should keep thorough records of consent, be clear about how customer data will be used, and stick to best practices for SMS content. This includes steering clear of restricted content and respecting frequency limits for messages. Following these rules not only helps maintain customer trust but also minimizes the risk of legal trouble.

Automation tools, like My AI Front Desk, simplify managing SMS consent by handling opt-in and opt-out processes automatically. They ensure compliance with legal requirements, such as obtaining clear consent and maintaining precise records. By eliminating manual tasks, these tools save your team time and reduce the risk of errors.

These solutions also connect effortlessly with your existing CRM using APIs. They automatically update customer records, track consent statuses, and manage preferences. This keeps your data accurate and current while delivering a more seamless and consistent communication experience for your customers.

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