SMS Compliance for Contractors: 10DLC, TCPA, and Consent, Explained Without the Legalese
An HVAC owner finally decides to start texting customers. He buys a texting tool, imports a few thousand old job records, and sends a “spring tune-up special” blast on a Friday.
Half of it never arrives. The carriers quietly filter the messages because the number is not registered for business texting. A handful of customers who do get it are annoyed, because they never agreed to marketing texts and one of them got the message at 10:40 PM. Within a week his number gets flagged, and now even his legitimate appointment confirmations are not going through.
He did nothing malicious. He just turned on texting the way you turn on any other tool, and walked straight into three different sets of rules he had never heard of: carrier registration, consent law, and quiet hours.
This post explains those rules in plain English for home service businesses. No legalese, no scare tactics. Just what 10DLC registration is, what TCPA actually asks of you, when you need consent, what quiet hours mean, and a checklist for turning texting on the right way.
This is general education, not legal advice. The rules around business texting are real, they change, and the details vary by state and by carrier. Nothing here is a substitute for advice from a qualified attorney, and you should confirm the specifics for your business with your messaging provider and your own counsel. Treat this as a map of the territory, not a legal opinion.
Why texting got regulated in the first place
For a long time, anyone could send texts from any number and the carriers mostly looked the other way. Predictably, spam, scams, and unwanted marketing flooded in. Consumers complained, regulators paid attention, and the mobile carriers decided to clean up business texting on their networks.
The result is two separate layers of rules that get blurred together but are not the same thing:
| Layer | Who set it | What it governs |
|---|---|---|
| A2P 10DLC registration | The mobile carriers, via The Campaign Registry | The technical right to send business texts at all from a standard number |
| TCPA and related consent law | Federal law and the FCC, plus state rules | Whether you are legally allowed to send a given message to a given person |
You have to satisfy both. Registration gets your messages through the network. Consent keeps you on the right side of the law. A business can be fully registered and still break consent rules, or have perfect consent and get blocked because it never registered. Below, both layers, one at a time.
A2P 10DLC registration: getting permission to send at all
“A2P 10DLC” is jargon for a simple idea. A2P means application-to-person, which is any text sent by software rather than a human thumb-typing on a personal phone. 10DLC means a 10-digit long code, which is just a normal local phone number like the one on your trucks.
So A2P 10DLC is the framework US carriers use to manage business texting sent from ordinary local numbers. If your shop sends texts through any kind of software or platform, that is A2P traffic, and the carriers want that number registered before they will reliably deliver it.
Registration has two parts:
- Brand registration. You identify your business: legal name, address, tax ID (EIN), and contact details. This proves a real company stands behind the texts.
- Campaign registration. You describe how you will use texting: the kind of messages (appointment reminders, customer care, marketing), sample message text, and how people opt in and opt out.
This happens through The Campaign Registry, the central system the carriers rely on, but you almost never touch it directly. You register through your messaging provider or platform, which submits your information on your behalf. There are small one-time and monthly registration fees involved, and the exact amounts change over time, so confirm current pricing with your provider.
Unregistered business texting gets filtered. This is the part owners underestimate. If you send business texts from an unregistered number, carriers increasingly filter or block that traffic, often silently. Your appointment confirmations and your missed-call replies simply stop arriving, and you may never get an error telling you why. Registration is not optional paperwork. It is the difference between your texts being delivered and quietly disappearing.
Registration is also a one-time setup, not a recurring chore. You complete brand and campaign registration when you turn texting on, and after that it mostly takes care of itself unless your business details change.
TCPA and consent: are you allowed to send this message?
The Telephone Consumer Protection Act, or TCPA, is the main federal law governing texts and calls to consumers in the US. The single most useful idea for a contractor is this: TCPA treats marketing messages and service messages very differently, and the difference is consent.
Marketing messages need prior express written consent
A marketing or promotional text, a tune-up special, a “we’re running a discount this month,” a reactivation campaign to old customers, requires what the rules call prior express written consent. In plain terms, the person must have clearly agreed, in writing, to receive marketing texts from you, before you send the first one.
Having someone’s number is not consent. You serviced their furnace, so you have their phone number, but that does not mean they agreed to receive marketing texts. Consent for marketing has to be specific and documented.
Service messages are treated differently
Transactional or service messages are a different story. These are texts tied to a transaction the customer already has with you:
- Appointment confirmations and reminders for a job they booked
- “Our tech is 20 minutes out” arrival notices
- A reply to a call or text the customer just sent you
- Invoice or payment notifications for work you did
Because the customer initiated the relationship and reasonably expects these messages, they sit on much firmer ground than marketing. A reply to someone who just texted or called your business is the clearest example: they reached out to you, so a relevant reply is expected, not intrusive.
The content is what decides marketing versus service, not your intent. An appointment reminder is a service message. Bolt a “and ask about our 15% off membership” onto it and you have turned it into marketing, which means it now needs the stricter consent. The safest habit is to keep service messages purely about the booked job, and route every promotional message through a separately consented marketing list.
Always honor opt-out, immediately
Whatever the message type, when someone replies STOP (or UNSUBSCRIBE, CANCEL, QUIT, and similar), you must stop texting them, promptly. Most platforms handle STOP automatically by suppressing the number, which is exactly what you want, because manual opt-out handling is where small shops slip up. Honoring opt-outs fast is both a legal requirement and the single easiest way to avoid complaints.
Identify your business
Every text should make clear who is sending it. A reminder that just says “You’re confirmed for 2 PM tomorrow” with no business name is a problem. Lead with your shop’s name so the recipient knows who they are hearing from and is never guessing whether a message is legitimate.
Quiet hours: don’t text at night
Even with perfect consent and a registered number, timing matters. The widely followed standard is to send marketing texts only between 8 AM and 9 PM in the recipient’s local time zone. Outside that window is “quiet hours,” and you should not be sending promotional blasts.
A few things worth knowing:
- Local time zone is the recipient’s, not yours. A 9 PM send from your office in one time zone can land at 10 PM or later for a customer two zones away. Quiet hours follow where the customer is.
- Some states and industry guidelines are stricter than the 8 AM to 9 PM baseline. When in doubt, narrow the window rather than widen it.
- Time-sensitive replies are different. Answering a customer who just texted you at 8:30 PM is a service interaction, not a marketing blast. The quiet-hours concern is about you proactively sending promotions, not about replying to someone who reached out.
Let the system enforce the window. Quiet hours are easy to violate by accident, especially with customers spread across time zones or a schedule-and-forget campaign. The reliable fix is to use a platform that knows each contact’s time zone and holds messages until they are inside the allowed window, so a campaign you queue at the wrong time still goes out at the right one.
The simplest rule to remember: never blast at night. The midnight or early-morning send that seems harmless because it is convenient for you is exactly the kind of thing that generates complaints and opt-outs.
How to collect and store consent in the real world
Consent sounds abstract until you have to actually capture it on a job site or a web form. Here is how a contractor collects it in practice, and what to keep.
Where consent comes from:
- Web form checkbox. On your quote-request or contact form, add an unchecked checkbox like “I agree to receive text messages from [Company], including appointment and marketing texts. Message and data rates may apply. Reply STOP to opt out.” Do not pre-check it, and do not bury it.
- “Reply YES” double opt-in. When someone first texts in or gives a number, a confirmation step (“Reply YES to get text updates from us”) creates a clean, timestamped record that they agreed.
- In-person or phone opt-in. When a tech or office staffer collects a number, they can ask directly: “Want appointment reminders and offers by text?” The key is to log that they said yes, with the date.
- On invoices and intake forms. A clear opt-in line on the paperwork a customer signs is a solid, documented source of consent.
What to keep: for each contact, you want a record of how and when they opted in, and the wording they agreed to. If a question ever comes up, that record is your answer.
Separate marketing consent from service messaging. Treat them as two different permissions. A customer who booked a job has effectively invited the service texts tied to that job. Adding them to a promotional marketing list is a separate decision that needs its own, explicit opt-in. Keeping the two lists distinct is the single cleanest way to stay on the right side of the consent rules.
The compliance checklist
Here is the practical version, the things to actually do before and as you turn texting on:
| Step | What to do | Why it matters |
|---|---|---|
| Register your number (10DLC) | Complete brand and campaign registration through your provider or platform | Unregistered business texts get filtered or blocked |
| Separate your lists | Keep service-message contacts and marketing-opted-in contacts distinct | Marketing and service messages have different consent rules |
| Collect documented consent | Add an unchecked opt-in checkbox to forms, log in-person and phone opt-ins | Marketing texts need prior express written consent |
| Keep consent records | Store how and when each contact opted in, and to what wording | Your record is your defense if anyone asks |
| Add opt-out language | Include “Reply STOP to opt out” and honor STOP immediately | Required, and the fastest way to avoid complaints |
| Identify your business | Lead every message with your shop name | Recipients should never wonder who is texting |
| Enforce quiet hours | Send marketing only 8 AM to 9 PM in the recipient’s local time | Night-time blasts generate complaints and opt-outs |
| Keep reminders clean | No promotional offers inside service or appointment texts | Adding a promo turns a service message into marketing |
| Confirm with a pro | Verify specifics with your provider and an attorney | Rules change and vary by state |
None of these are heavy lifts on their own. The trap is doing none of them and finding out the hard way, the way the HVAC owner at the top of this post did.
How a platform handles the mechanics for you
Most of the items above are mechanical, the kind of thing software should enforce so you do not have to remember it on every send. That is exactly the part a messaging platform is built to carry.
When you send SMS through Marqeable’s Conversations product, the platform handles:
- 10DLC registration, by walking you through brand and campaign registration so your number is registered and your texts actually deliver.
- Opt-out handling, by detecting STOP and similar replies and suppressing those contacts automatically, so an opt-out is honored the moment it arrives.
- Quiet hours, by holding outbound marketing messages until they fall inside the allowed window for each contact’s time zone, so a campaign you queue late still sends at the right time.
- Consent-aware lists, by keeping your audiences organized so service contacts and marketing-opted-in contacts do not get mixed together.
Software handles mechanics, not legal judgment. A platform can register your number, suppress opt-outs, and hold messages for quiet hours. It cannot decide for you whether a given customer gave valid marketing consent, or whether a specific message crosses from service into marketing. Those judgment calls are yours, ideally made with an attorney. The tooling removes the easy mistakes so you can focus on the ones that need a human.
This is the division of labor that works: let the platform enforce the repeatable rules, registration, opt-outs, quiet hours, list hygiene, and reserve your attention for the consent and content decisions that actually require it.
The Bottom Line
Texting customers as a home service business is completely doable and worth doing. It just is not a tool you flip on blind. Three things stand between you and clean, deliverable texting: register your number for A2P 10DLC so your messages get through, get and keep real consent for anything promotional while treating service messages as the lighter-touch category they are, and respect quiet hours so you are never the business texting someone at 10:40 PM.
Do those, keep your service and marketing lists separate, honor every STOP, and you have removed the great majority of the risk. The rules exist because texting got abused, and the bar for being a good actor is not high. Most of it is mechanics a decent platform enforces for you. The rest is judgment, and judgment is where a quick conversation with an attorney pays for itself.
Ready to turn on texting the right way?
Try Marqeable: marqeable.com
Marqeable sends SMS through its Conversations product with the compliance mechanics built in: it walks you through 10DLC registration so your texts deliver, suppresses STOP opt-outs automatically, holds marketing messages for quiet hours in each contact’s time zone, and keeps your service and marketing audiences cleanly separated. It does not replace your attorney, but it removes the easy mistakes so you can text customers with confidence instead of crossing your fingers.
Related Resources
SMS Marketing for HVAC, Plumbing and Roofing
The campaigns and timing for the SMS you send to your customer list, once you have the compliance basics in place.
Missed Call Text-Back for Home Services
The highest-ROI text automation a contractor can run, and why replying to inbound calls sits on firmer consent ground.
Why Your Customer Replies Keep Falling Through the Cracks
The case for a unified SMS and email inbox, so opt-outs and replies all land in one place you actually watch.
How Home Service Businesses Grow Revenue From Customers They Already Have
The reactivation and review plays that depend on a clean, consented customer list.
Frequently Asked Questions
Do I need 10DLC registration if I only reply to customers who text me first?
In practice, yes. A2P 10DLC registration is about the number you send business texts from, not about who started the conversation. US carriers require business application-to-person traffic on standard 10-digit local numbers to be registered through The Campaign Registry, whether the message is a reply or an outbound send. Unregistered business traffic gets heavily filtered or blocked, so even reply-only texting needs a registered number. You register through your messaging provider or platform.
Are appointment reminders considered marketing texts?
Generally no. Appointment confirmations and reminders for a service the customer already booked are treated as transactional or service messages, not marketing, because the customer initiated the relationship and expects them. The line is content: the moment you add a promotional offer, a discount, or an upsell to that reminder, it can become a marketing message and the stricter prior-express-written-consent rules apply. Keep reminders to the logistics of the booked job and keep promotions on a separately consented marketing list.
What are SMS quiet hours and when can I text customers?
Quiet hours are the times you should not send marketing texts. The widely followed standard is to send only between 8 AM and 9 PM in the recipient’s local time zone. Some states and industry guidelines are stricter. Time-sensitive transactional replies, like answering someone who just texted you, are different, but as a rule of thumb you should never blast marketing messages at night. A good platform enforces the window automatically based on the contact’s time zone.
Can I text past customers who never opted in to texting?
Be careful. Having someone’s phone number from a past job is not the same as having consent to send marketing texts. For promotional texting, the standard is prior express written consent, which means the customer agreed specifically to receive marketing messages. A pre-existing business relationship may support some transactional messaging, but it is not a blanket license to market by text. The safer path is to collect fresh, documented opt-in before adding past customers to a marketing SMS list, and to confirm specifics with your provider and an attorney.
About Marqeable
Marqeable is your AI marketing agent. It connects to your CRM, creates on-brand campaigns across email, SMS, and social, and sends SMS through a Conversations product with the compliance mechanics built in: 10DLC registration, automatic STOP handling, and quiet-hours enforcement, so the leads and customers you already have are reached the right way.
