The Texting Rules Most Home Service Businesses Are Breaking Without Knowing (A2P 10DLC Explained)

If your business texts customers, whether that's appointment reminders, review requests, or a quick "on our way" message from a technician, there's a decent chance you're doing it in a way that carriers are quietly filtering right now. Not because you did anything wrong on purpose. Because almost nobody in the home service world has heard of A2P 10DLC, and the businesses breaking these rules usually find out the hard way: their texts just stop arriving, and nobody tells them why.

This isn't a scare piece. It's a straightforward explanation of what A2P 10DLC is, whether it applies to you, what it actually costs, and what to do about it. Takes about ten minutes to fully understand, and for most home service businesses, about the same amount of effort to fix.

What is A2P 10DLC, in plain English

A2P stands for "application-to-person," meaning texts sent by software or an application to an actual customer, as opposed to a text you type by hand from your personal phone to a friend. 10DLC stands for "10-digit long code," which is just the standard 10-digit phone number format most business texting platforms use to send those messages.

A2P 10DLC registration is the process wireless carriers (Verizon, AT&T, T-Mobile, and the rest) put in place a few years ago to identify who is sending bulk or automated text traffic and why. Before this system existed, spam texters and legitimate businesses were sending messages through the same channels, and carriers had no reliable way to tell them apart. So the carriers built a registration system: businesses register their brand and their specific texting use case (called a "campaign"), and in exchange, their messages get a trust score that helps them actually reach customers instead of getting flagged as spam.

Think of it like the do-not-call registry, but flipped. Instead of a list you avoid, it's a list you join so carriers know you're legitimate and let your messages through.

Who this actually applies to

If you text customers through any kind of business software, not just a raw personal cell phone, this almost certainly applies to you. That includes:

• CRM platforms sending appointment confirmations or reminders
• Review request tools that text customers after a job
• Job status updates ("your technician is 20 minutes out")
• Marketing or promotional texts about seasonal offers
• Two-way texting through your office line for scheduling

Basically, if a piece of software is sending the text on your behalf, even if a human wrote the message, it counts as A2P traffic and needs to be registered. A one-off text you send by hand from your personal iPhone to a customer you already have a relationship with is a different category and generally isn't the focus of this system. But that's not how most home service businesses actually communicate with customers anymore. Automated reminders and review requests are exactly the kind of texting this registration was built around.

What registration actually involves

Most CRM and texting platforms built for home service businesses (think the tools you're already using for scheduling, invoicing, and customer communication) have this registration process built into their onboarding now, because carriers started enforcing it more aggressively. Here's roughly what it involves:

Brand registration

You register your business as a "brand" with basic information: legal business name, EIN, address, and industry type. This is a one-time step per business.

Campaign registration

You then register a "campaign," which describes the type of messages you'll be sending (appointment reminders, customer care, marketing, mixed use, and so on) and includes sample message templates. This is what carriers actually vet before assigning your trust score.

Fees

There are two general categories of cost. First, a one-time vetting fee to register the campaign, which varies by campaign type and provider. Second, ongoing monthly carrier fees that are typically somewhere in the range of roughly $4 to $15 per month depending on the campaign type and your provider's specific pricing. These fees are set by the carriers and passed through by whatever platform you're using, so the exact numbers depend on which software you're on. Your CRM or texting provider should be able to give you the specific breakdown for your account.

Consent rules you need to know

Registration is only half of doing this right. The other half is consent, and this part sits under the Telephone Consumer Protection Act (TCPA), a federal law that predates A2P 10DLC but works alongside it.

Express consent

You need clear permission before texting a customer for marketing purposes. For transactional texts, like appointment reminders tied to a job someone already booked, the bar is lower because the customer gave you their number specifically for that purpose. For promotional or marketing texts, you generally need explicit opt-in, meaning the customer actively agreed to receive that type of message, not just that they gave you their number for scheduling.

Opt-out language

Every marketing text needs a clear way to opt out, typically a line like "Reply STOP to unsubscribe." Most texting platforms handle this automatically, but it's worth confirming your provider is including it, especially on any custom or manually built message flows.

Quiet hours

TCPA guidance generally restricts marketing texts to reasonable hours, commonly cited as 8am to 9pm in the recipient's time zone. A technician texting "on our way" at 7am for a scheduled appointment is a different situation than a promotional blast landing at 10pm. Keep marketing sends inside reasonable hours as a default practice.

One line worth saying directly: none of this is legal advice, and the specifics of TCPA compliance can get detailed depending on your state and your exact use case. Confirm the specifics with your texting or CRM provider, most of the established platforms have compliance guidance built into their onboarding for exactly this reason.

What happens if you skip it

This is the part that catches businesses off guard, because there's no dramatic warning. If your business isn't registered, or your campaign type doesn't match what you're actually sending, carriers can start filtering your messages. That doesn't mean you get an error message saying "blocked." It usually means the text just doesn't arrive, silently. Your CRM shows it as sent. The customer never sees it. You have no idea your appointment reminders have a gap in them until a customer mentions they never got a confirmation, or you notice your review request numbers dropped for no obvious reason.

For an unregistered number sending any real volume of texts, filtering rates can be significant, and it tends to get worse over time as carriers tighten enforcement rather than loosen it. This is a case where the fix is genuinely simple and the cost of ignoring it is invisible until it isn't.

Why this snuck up on so many businesses

Part of why so few home service owners know about A2P 10DLC is timing. The registration system rolled out gradually, carrier by carrier, and enforcement tightened over a couple of years rather than showing up all at once. A business that set up its texting platform a few years ago may have been grandfathered in under looser rules that have since changed. A business that signed up more recently might already be registered without the owner ever seeing the term, because a good provider handled it quietly during onboarding. Either way, the responsibility for knowing your status sits with the business, not the carrier, which is exactly why it's worth a five-minute check rather than assuming someone else already took care of it.

What to actually do about it

If you're not sure whether your business is registered, here's the quickest path to an answer:

• Log into whatever platform sends your customer texts (CRM, scheduling software, review request tool) and look for "A2P 10DLC," "brand registration," or "10DLC compliance" in the settings or messaging section.
• If you don't see it, contact your provider's support directly and ask point blank whether your account is registered and what campaign type it's registered under.
• If you're using more than one tool to text customers (say, your CRM for reminders and a separate app for review requests), check both. Registration is usually tied to the specific number and platform, not your business as a whole.
• If you're not registered, most providers can walk you through it in one sitting. It's a form, not a project.

This is exactly the kind of unglamorous, easy-to-overlook piece that quietly determines whether the rest of your marketing actually reaches people. You can run a great Google Ads campaign, get the lead, and still lose the job if your appointment confirmation text never made it through. It's part of why we treat tracking and communication setup as seriously as the ad campaigns themselves when we build a system for contractors, plumbing and HVAC companies, and other home service businesses.