Marketing text message service: what it is, what it costs, and how to stay legal

Last updated 2026-07-10

What is a marketing text message service and how does it work?

A marketing text message service is a cloud platform that connects your business phone number (usually a 10-digit long code, a toll-free number, or a short code) to your contact list and sends SMS or MMS in bulk. It schedules drip sequences, tracks delivery and replies, and keeps the message logs you'd need if you ever face a TCPA audit. That's the whole job.

Here's the basic flow. A customer opts in through a web form, a keyword text ("Text JOIN to 55512"), or a physical sign-up. The platform records that consent event with a timestamp. You send messages through the dashboard or an API. When a subscriber replies STOP, the platform suppresses them from future sends automatically. That suppression record matters enormously in litigation.

Most services also offer two-way messaging, so a customer can reply and your agent can respond in a shared inbox. Restaurants use this for reservation confirmations. Real estate agents send new listing alerts. Retailers run flash sales. The use case shapes which features matter most. The legal requirements stay identical across all of them ^[1][2].

One thing worth understanding: these platforms do not shield you from TCPA liability. The platform sends what you tell it to send, to the numbers you give it. If your list has bad consent or includes wireless numbers you scraped without permission, the platform's logs just make your violation easier to prove. Compliance is your job, not the software's.

What does TCPA say about marketing texts, and why should you care?

The Telephone Consumer Protection Act, 47 U.S.C. § 227, is the federal law that governs commercial text messaging to U.S. consumers ^[1]. It bans marketing texts to mobile numbers sent with an automatic telephone dialing system (ATDS) without prior express written consent. The FCC reads "written consent" as an affirmative opt-in, not someone handing you a business card at a trade show or entering a sweepstakes.

The statute at 47 U.S.C. § 227(b)(1)(A) makes it unlawful "to make any call (other than a call made for emergency purposes or made with the prior express consent of the called party) using any automatic telephone dialing system or an artificial or prerecorded voice" to any cellular phone ^[1]. Courts have applied that language to text messages since 2003.

The damages structure is what makes TCPA suits catnip for plaintiff attorneys. Each violation carries statutory damages of $500. If the court finds the violation was willful, that triples to $1,500 per message ^[1]. A campaign of 10,000 texts to people who never properly consented can expose you to $15 million in theoretical damages. Class actions have settled for tens of millions. See tcpa sms compliance for how those cases actually unfold.

The FCC tightened consent for lead generation in a 2023 order, requiring consent to be "one-to-one," meaning a single opt-in can no longer be shared across dozens of marketing partners ^[3]. That change hits companies buying contact lists from lead generators hardest. Bought a list of phone numbers? You almost certainly do not have TCPA-compliant consent to text them.

State laws add another layer. Florida, Oklahoma, and Washington run their own mini-TCPA statutes, with their own damages and rules sometimes stricter than federal law ^[4]. Read LeadCompliant's lead generation compliance news feed if you're actively texting. This area moves fast.

What does prior express written consent actually require for SMS marketing?

This is where most small teams get it wrong. Prior express written consent for marketing texts requires four things: a clear, conspicuous disclosure that the person is authorizing marketing texts, the name of the seller who will contact them, a statement that the agreement is not a condition of purchase, and a signature (an electronic checkbox or a keyword reply counts) ^[3].

A pre-checked checkbox does not count. Buried fine print does not count. Verbal consent over the phone does not satisfy the written-consent standard. You need a clear affirmative action from the consumer with the disclosure visible right at that action.

The FCC's one-to-one consent rule from the 2023 order goes further and bars aggregated consent. A single form listing 50 marketing partners and claiming consent for all of them will not survive regulatory or judicial scrutiny ^[3]. Each business that wants to text someone needs that person's individual consent for that specific business. (The rule's effective date and implementation have faced litigation, so watch the docket.)

For a practical walkthrough of what your opt-in form should say, see our sms opt in form guide. The short version: keep the disclosure simple, make it obvious, tie it to one named sender, and log everything the platform captures.

Double opt-in, where a subscriber confirms by replying YES after their first keyword text, gives you a second layer of evidence. It shrinks your list slightly but strengthens your consent records a lot. If you're texting high volumes or operating in litigious states, sms double opt in is worth the conversion hit.

How much does a text message marketing service cost?

Pricing swings hard by platform, volume, and features. Most services use one of three models: per-message credits, a monthly flat fee with a message cap, or a hybrid with a base fee plus overage rates. Small teams usually land between $20 and $300 a month.

Tier	Typical monthly cost	Messages included	Best for
Starter (e.g., SimpleTexting, EZTexting)	$20 to $50/mo	500 to 2,000	Local businesses, testing
Growth (e.g., Attentive, Klaviyo SMS)	$100 to $300/mo	5,000 to 25,000	E-commerce, mid-size retail
Mid-market (e.g., Twilio, Bandwidth)	$0.0075 to $0.01/msg	Pay-as-you-go	Developers, high volume
Enterprise (e.g., Salesforce Marketing Cloud, Braze)	$1,000+/mo	Custom	Large brands, omnichannel

Short codes (five- and six-digit numbers) used to cost $500 to $1,000 a month just to lease the number, but the major carriers moved away from shared short codes around 2021, and dedicated short codes became the standard for high-volume senders ^[5]. Ten-digit long codes (10DLC) run cheaper, around $4 to $10 a month for the number, but they require brand and campaign registration through The Campaign Registry. That adds a one-time fee of roughly $4 for the brand plus $10 to $15 per campaign type, and a monthly campaign fee near $10 ^[9].

Toll-free numbers sit in the middle. No 10DLC registration required, they can push a few hundred thousand messages a month at decent throughput, and they're cheaper to set up. The trade-off is slightly lower deliverability than a registered 10DLC on some carriers.

Hidden costs to watch: list-cleaning fees, carrier surcharges (some platforms pass through $0.003 to $0.005 per message on top of the base rate), keyword fees, and MMS surcharges (MMS usually costs two to four times an SMS credit because of the larger data transfer). A compliance misstep is the priciest hidden cost of all.

What features should you look for in a text message marketing service?

Start with compliance infrastructure, not design. The platform has to handle STOP, HELP, and CANCEL opt-out commands automatically and in real time. It should timestamp and store every opt-in event, every message sent, and every opt-out. If you can't export those logs, the platform is a liability.

After that, these features earn their keep for most small teams.

Two-way messaging. When customers can reply and you can respond, SMS turns into a sales channel instead of a broadcast. Some platforms treat replies as a separate inbox, others fold them into the main view. Test it before you commit.

Segmentation and tagging. Sending a "new listing in Denver" alert to your entire national list is wasteful and annoying. Tag contacts by geography, behavior, or source, then send accordingly.

Scheduling and drip sequences. For real estate and restaurants especially, timed sequences tied to an event (an open house, a reservation, a birthday) beat random blasts by a wide margin.

CRM or platform integration. A platform that won't sync with your CRM leaves you managing two contact lists by hand. That's how duplicates and dead numbers pile up.

Reporting at the message level. SMS open rates average around 98%, but the numbers worth tracking are click-through rate on your links, reply rate, and opt-out rate per campaign ^[6]. A high opt-out rate on one campaign usually means the content missed or the timing was off.

For a side-by-side of specific tools, text message marketing software breaks down the major platforms.

What is the best text message marketing service for restaurants?

Restaurants have specific needs: reservation confirmations, limited-time offers, loyalty rewards, and event announcements. The best platform for a restaurant integrates with your POS or reservation system, sends time-sensitive offers with almost no friction, and handles the compliance layer automatically.

SimpleTexting and SlickText are popular with independents and small chains because they're quick to set up and need no developer. Attentive and Klaviyo fit mid-size chains with an e-commerce arm. If you already run Toast or Square, check whether they have a built-in SMS feature before you pay for a separate service.

Here's the distinction that trips restaurants up. Transactional texts (order confirmation, table ready) don't require the same prior express written consent as marketing texts under TCPA, though you still need some form of consent and the message has to stay genuinely transactional ^[1]. Add a coupon or a promotional line and the message becomes marketing, so the written-consent standard kicks in.

For real message examples and a compliant opt-in flow, see sample text message marketing for restaurants. The short version: keep offers relevant to recent visits, send no more than two to four promotional texts a month, and put your business name in every message.

Restaurant SMS tends to perform well because the audience opted in for something tangible: a discount, a birthday reward, an early table notice. High relevance keeps opt-out rates low.

What is the best text message marketing service for real estate?

Real estate SMS has a different compliance profile than restaurant SMS. Agents often want to text leads who never explicitly opted in, and that's exactly where the violations happen. The rule doesn't change: prior express written consent before any marketing text ^[1][2].

Done right, real estate SMS is one of the highest-return uses of the channel. The National Association of Realtors has reported that buyers and sellers lean heavily toward text over calls for alerts and confirmations, though response-rate figures vary by market and agent style, and nobody has clean industry-wide data on this.

The platforms that work best here have CRM integration (Salesforce, Follow Up Boss, kvCORE), keyword capture (someone texts "HOMES" to your number from a yard sign), and MMS support so you can send a listing photo. Textedly, SimpleTexting, and Lead Sherpa show up often in the vertical. Lead Sherpa is built specifically for real estate prospecting, though it's drawn complaints over cold-texting use, so read its terms carefully.

The cleanest compliant case: a buyer fills out a form on your site, the form carries a clear SMS consent disclosure, they check the box, and you send them listing alerts matching their criteria. Strong consent record, high-value subscriber.

For the full real estate breakdown, including compliance-safe prospecting, see real estate text message marketing.

How do SMS open rates and response rates compare to email?

SMS open rates blow past email. The widely cited figures are about 98% for SMS versus roughly 20% for email ^[6]. The caveat: "open" for SMS just means the message reached an unlocked phone and got viewed, which nearly all do within three minutes. It doesn't mean the person read it closely or acted.

Click-through rates on SMS links usually run 10% to 20% for well-segmented, opted-in lists, against 2% to 5% for email ^[6]. Response rates to conversational or question-based texts can hit 30% to 45% in some verticals. Those numbers fall fast when your list is stale or your messages miss the mark.

The practical read: SMS grabs attention instantly, and it burns goodwill faster than email does. People opt out of irrelevant texts more readily than they unsubscribe from marketing email. One bad send to a cold or stale list can spike your opt-out rate enough to trigger carrier filtering, which drags down deliverability for every send after it.

The best operators treat SMS as a premium channel and email as a broadcast one. They save SMS for time-sensitive, high-value messages and use email for newsletters and longer content.

What are the 10DLC registration rules and why do they matter?

10DLC means 10-digit long code, the standard local phone number businesses use for SMS. Starting in 2021, the major carriers (AT&T, Verizon, T-Mobile) required businesses to register their brand and messaging campaigns through The Campaign Registry (TCR) before sending SMS at any real volume from a 10DLC number ^[5].

Skip registration and carriers can filter or block your messages with no warning. Throughput on unregistered numbers gets throttled to around 75 messages per minute. Registered 10DLC numbers can push 4,000 to 15,000 messages per minute depending on their trust score.

Registration asks for your legal business name, your EIN or business registration number, the message types you'll send (marketing, alerts, two-factor authentication, and so on), and sample content. Carriers use that to assign a trust score, and the score drives your deliverability.

Fees are modest: roughly $4 for brand registration, $10 to $15 for each campaign type, and a monthly campaign fee near $10, though carriers and platforms tack on their own charges ^[9]. Most platforms handle the TCR registration during setup, but you have to supply accurate business information. Misrepresenting your message type during registration is a separate problem from TCPA and can get your number blacklisted ^[5].

For your sms opt in requirements and 10DLC alignment, the content you register in TCR should match the consent disclosure your subscribers actually saw. If your opt-in form says "promotional offers" and you're sending debt collection texts, that's a problem on two fronts.

How do you build a compliant SMS subscriber list from scratch?

The only compliant path is building your list through affirmative opt-ins. There's no shortcut. Buying phone numbers, scraping contact data, or reusing contacts who gave their number for something else all carry TCPA risk that can trail you for years. The statute of limitations is four years ^[1].

These opt-in methods hold up legally.

Keyword opt-in. Advertise a keyword and a short code or 10DLC number in-store, on menus, on signs, in email footers. The subscriber texts the keyword, your platform replies with a confirmation, and they reply YES. That two-step flow builds a strong consent record. See sms opt in for exact language.

Web form opt-in. A form with a clearly labeled, unchecked SMS checkbox, a disclosure naming you as the sender, a message-frequency estimate, and a note that message and data rates may apply. The FCC's one-to-one consent guidance requires the disclosure to name you specifically ^[3].

Point-of-sale opt-in. A paper sign-up or tablet capture at checkout, using the same disclosure elements as the web form. Restaurants and retailers rely on this.

What you cannot do: auto-enroll someone because they gave you their number for a call, add people because they consented to a different company, or use a third-party list unless you can show each person gave you specific, documented written consent. The FCC's updated rules make co-registration consent through lead generators essentially unusable for commercial texters ^[3].

Once your list is built, scrub it against the National DNC Registry if you're also calling. (DNC doesn't apply to texts directly, but overlapping outreach to the same numbers raises flags.) Run it through a real-time carrier lookup to catch landlines that shouldn't get texts. LeadCompliant's free number checker is a fine starting point for small teams doing this the first time.

List hygiene after opt-in matters too. Drop hard bounces (numbers returning a delivery failure) right away. Archive subscribers after 180 days of no engagement. A smaller, engaged list beats a large, stale one on both deliverability and legal exposure.

What opt-out rules apply, and what happens if you ignore them?

Under TCPA and FCC rules, a consumer can revoke consent to receive texts at any time, through any reasonable means ^[2]. That once meant just replying STOP to the sender, but a 2023 FCC order clarified that if a consumer tells you by voice, email, or any other channel that they're done getting your texts, you have to honor it within a reasonable time ^[2].

Most platforms handle the STOP command automatically. The gap is verbal or written revocations through other channels. If a customer emails your support desk saying "please stop texting me" and your support team never updates the SMS platform, you're still on the hook for every text that goes out after that request.

You also have to send a short confirmation text when someone opts out. That confirmation is the one message you're allowed to send after they opt out. It should read something like: "You've been unsubscribed. No further messages will be sent."

Ignoring opt-outs is one of the cleanest fact patterns a TCPA plaintiff attorney can ask for. You've documented the revocation. You've documented the texts that followed. Statutory damages of $500 to $1,500 per text stack up fast across a weekly promotional campaign ^[1].

FCC rules also require your opt-out mechanism to work even when the consumer texts STOP from a different number than the one they opted in with. That's technically fiddly for some platforms and worth testing before you launch anything high-volume.

Is a marketing text message service right for your business?

SMS marketing fits if you have a clear, tangible value exchange (discounts, alerts, exclusive access), if your audience skews younger or is used to texting, and if you'll build your list through clean opt-in flows instead of buying contacts.

It's a bad fit if you run a high-volume cold outreach model, if your offers are vague or brand-awareness fluff, or if nobody on your team owns compliance monitoring. The overhead is real. Consent documentation, opt-out processing, 10DLC registration, carrier filtering management: none of it is set-and-forget.

For small outbound sales teams, the sharper question is whether SMS should sit next to cold calling (which has its own TCPA and DNC rules, see our tcpa overview) or replace it for certain segments. A common approach: cold-call verified, DNC-scrubbed numbers for first contact, then move warm prospects who've given consent to SMS follow-up. That uses each channel for what it's good at.

LeadCompliant's free TCPA compliance kit includes a starter consent disclosure template, an opt-in flow checklist, and a 10DLC registration guide. That's a reasonable foundation before you pay for any platform.

SMS marketing works for businesses with a genuine reason to talk often with an opted-in audience. It's a minefield for anyone using it as a substitute for legitimate prospecting. The $500-to-$1,500-per-text penalty is not theoretical. Courts have awarded and upheld eight-figure class action judgments in TCPA cases ^[7].

Frequently asked questions

Do I need written consent to send a single marketing text to someone who gave me their number?

Yes. Under 47 U.S.C. § 227, prior express written consent is required before sending any marketing text to a mobile number using an ATDS, whether or not you know the person. The only out is if they specifically authorized promotional texts at the time they shared their number, which is a high bar to clear without a documented opt-in process.

What is 10DLC registration and do I have to do it before I can send texts?

10DLC registration is a carrier-required process where you register your business and messaging campaigns through The Campaign Registry before sending SMS at volume from a standard 10-digit number. Skip it and carriers throttle or filter you. It costs roughly $4 for your brand plus $10 to $15 per campaign type and a $10 monthly campaign fee. Most SMS platforms handle it during setup.

What happens if a customer texts STOP but I keep sending them messages by mistake?

Each text sent after a valid opt-out is a separate TCPA violation carrying $500 in statutory damages, or $1,500 if willful. A documented opt-out request plus continued texts is one of the cleanest plaintiff fact patterns in TCPA litigation. Your platform should suppress the number on STOP, but you also need a process for opt-out requests arriving through email or phone.

Can I buy a list of phone numbers and start texting them?

No, not safely. Purchased lists rarely carry TCPA-compliant prior express written consent for your specific business. The FCC's one-to-one consent rules from the 2023 order make co-registered or aggregated consent lists essentially unusable for commercial texting. Text a purchased list and every recipient who didn't specifically consent to hear from you is a potential plaintiff. These class actions are common and expensive.

How often can I text my subscribers without annoying them or violating rules?

There's no statutory maximum, but the FCC and FTC expect you to match the frequency you disclosed at opt-in. If your form said "up to 4 messages per month," sending 12 is a deceptive practices problem and will spike opt-outs. Industry practice for promotional texts is two to four a month for most verticals. Higher frequency works only when each message carries clear, time-sensitive value.

Is there a difference between SMS and MMS for compliance purposes?

Legally, no. Both SMS and MMS to mobile numbers require prior express written consent under TCPA if they carry marketing content. Operationally, MMS costs more (typically two to four times an SMS credit) and needs slightly more platform support. Both must include sender identification and an opt-out mechanism. MMS can carry images and longer text, useful for real estate listings and restaurant offers.

What is the best text message marketing service for a small business with under 500 contacts?

At under 500 contacts, almost any starter-tier platform works. SimpleTexting, EZTexting, and SlickText all offer $20 to $50 per month plans with enough messages and compliance features for small lists. The bigger decision at that scale is your opt-in process, not the platform. Many small businesses run a single keyword opt-in with a consistent cadence and basic segmentation and get solid results.

Do the TCPA rules apply if I'm texting existing customers, not cold prospects?

An existing customer relationship gives you some room for informational texts (order updates, appointment reminders) but not for marketing texts. If the message promotes a product, service, or offer, you still need prior express written consent, even from existing customers. Many businesses collect SMS consent at checkout or during account creation. Without that documented consent, the relationship alone doesn't meet the TCPA marketing standard.

How does SMS marketing work for real estate lead generation?

The compliant model is inbound keyword opt-in from yard signs, online ads, or your website, followed by automated listing alerts matched to the buyer's criteria. Agents who cold-text expired listing owners or FSBOs without consent face serious TCPA risk. Once a prospect submits a web form with a clear SMS consent disclosure, you can follow up by text. See the real estate text message marketing guide on this site for the full breakdown.

What should every marketing text message include to stay compliant?

Every marketing text should include your business name (so the recipient knows who's texting), the offer or content, and an opt-out instruction, usually REPLY STOP to unsubscribe. On the first message in a program, also include your frequency estimate and a note that message and data rates may apply. The FCC mandates no magic words, but these elements align with industry safe harbor practices and most platform defaults.

Can restaurant text message marketing include promotional coupons?

Yes, and it's one of the strongest use cases for SMS. A coupon or discount texted to a subscriber who opted in for loyalty rewards is compliant and usually drives high redemption. The consent disclosure at opt-in must have mentioned promotional offers. A text that starts transactional (your order is ready) and then tacks on a coupon becomes marketing, which triggers the full written-consent standard.

How do I know if my SMS platform is compliant with TCPA?

A compliant platform processes STOP, HELP, and CANCEL commands automatically, logs opt-in and opt-out events with timestamps, supports 10DLC registration, and lets you export your consent records. It should send a confirmation on opt-out. Platforms alone don't make you compliant, but one that skips these basics makes compliance far harder. Review the platform's terms to confirm it doesn't indemnify itself from your compliance failures.

What states have their own SMS marketing laws beyond federal TCPA?

Florida, Oklahoma, and Washington have enacted state-level texting and telemarketing laws that can run stricter than federal TCPA. Florida's Mini-TCPA (Florida Statute § 501.059) expanded protections and was amended in 2021 and 2023. Some states also keep their own do-not-call lists. If you text consumers across multiple states, the most restrictive applicable state law sets the floor for your program.

How long should I keep consent records for SMS marketing?

The TCPA statute of limitations is four years, so keep consent records, opt-out records, and message logs for at least four years from each event. Some compliance advisors suggest five years as a buffer. Your SMS platform should store these, but export and back them up independently in case you switch platforms or your account gets closed.

Sources

1. Cornell Law School LII, 47 U.S.C. § 227 (Telephone Consumer Protection Act): TCPA prohibits marketing texts to mobile numbers without prior express written consent; statutory damages are $500 per violation, up to $1,500 if willful
2. FCC, Report and Order closing the lead generator loophole (FCC 23-107, 2023): FCC 2023 order requires one-to-one consent for commercial texts; co-registered consent across multiple sellers is no longer valid
3. Florida Legislature, Florida Statute § 501.059 (Telephone solicitation): Florida's Mini-TCPA imposes stricter telemarketing and texting rules on calls and texts to Florida consumers
4. The Campaign Registry (TCR), 10DLC brand and campaign registration: Carriers require 10DLC brand and campaign registration through The Campaign Registry; unregistered numbers face throughput throttling
5. Mobile Marketing Association, mobile messaging industry benchmarks: SMS open rates average approximately 98%; click-through rates on SMS links typically range from 10% to 20% for opted-in lists
6. U.S. Courts, PACER federal court records: TCPA class action judgments and settlements have reached eight figures in multiple cases
7. FTC, CAN-SPAM Act compliance guidance for business: FTC enforces commercial messaging rules alongside FCC; frequency and content representations at opt-in must be honored
8. The Campaign Registry (TCR), brand and campaign registration: Brand registration fee is approximately $4; campaign registration fees are $10 to $15 per campaign type plus a monthly fee of roughly $10
9. Cornell Law School LII, 47 CFR 64.1200 (FCC rules restricting telephone solicitation): FCC rules confirm that text messages are subject to TCPA requirements and govern consent and opt-out obligations for SMS