10DLC Registration Explained: Business Texting Basics
10DLC registration explained: what brand and campaign mean, what to prepare before you register, and the opt-out habits that keep business texts delivered.
If your business texts customers from a regular local phone number in the US, you have probably heard that those messages need to be "registered." That is 10DLC registration: a process the US wireless industry uses to confirm who is sending business texts and why. Done well, it is an afternoon of paperwork; done badly, it means rejected applications and texts that quietly never arrive.
In short, 10DLC registration means telling the industry who your business is (the brand) and why you text (the campaign) before you send. This guide explains both in plain language, lists what to gather before you apply, and covers the consent and opt-out habits that keep messages delivered.
What is 10DLC registration?
10DLC registration is the US process for recording which business sends texts from a local 10-digit number and what those texts are for. 10DLC stands for "10-digit long code": a standard local number with an area code, like the one on your business card. When a business uses one to send texts to people, the industry calls it A2P (application-to-person) messaging, as opposed to friends texting each other. The major US wireless carriers require businesses sending A2P texts over 10DLC numbers to register who they are and what they send, through a central registry (The Campaign Registry). The aim is to cut spam and give legitimate senders better, more predictable delivery. The expectations behind it come largely from the CTIA Messaging Principles and Best Practices, which describe how consent, opt-out and content should work for business messaging.
What is the difference between a brand and a campaign in A2P 10DLC?
The brand is who you are and the campaign is why you text. You register one brand for your business and one campaign for each distinct use case.
The brand: who you are
The brand is your business identity. It typically includes:
- Legal business name, exactly as registered
- Tax ID (EIN for US businesses) and business type
- Registered business address
- Website
- A business contact name, email and phone number
These details are checked against official records. Small differences, such as "Smith Plumbing" when your legal name is "Smith Plumbing & Heating LLC", are a common reason for delays.
The campaign: why you text
A campaign describes one use case. A business can have more than one. It typically includes:
- The use case, such as appointment reminders, customer care, order updates or marketing
- A description of what you send, in plain words
- Two or more sample messages that look like your real texts
- How people opt in, described step by step
- Your opt-out and help replies
Be specific. "Appointment reminders and rescheduling for our dental clinic patients" is a campaign. "Marketing and other messages" is a rejection waiting to happen.
What do you need before you apply for 10DLC registration?
You need exact legal business details, a live website with a privacy policy and text terms, a specific use case, sample messages and a clear opt-in description. Most rejections come from something on this checklist being missing or inconsistent.
- Legal name and EIN copied exactly from your IRS paperwork or state registration, including "LLC" or "Inc."
- Business address matching your official records, not a mailing address that differs from them.
- A working website on your own domain that clearly shows what the business does.
- A privacy policy on that website that says you do not sell or share mobile numbers or opt-in data with third parties for their marketing.
- Terms for your text program: what you send, roughly how often, that message and data rates may apply, and how to opt out (reply STOP) or get help (reply HELP).
- A use case for each type of message you send, written in one or two sentences.
- Sample messages for each use case that include your business name and, where relevant, opt-out language.
- An opt-in description: where people sign up (web form, checkout, paper form, keyword), the exact wording they agree to, and a link or screenshot if you have one.
- Opt-out and help replies ready to go, with your business name and a way to reach you.
- Expected volume, roughly, so you pick the right campaign type.
How should people opt in to business texts, and how do you prove it?
People should opt in through a clear, unchecked sign-up that names your business and the kind of messages they will get, and you prove it with a record of when, how and to what they agreed. Registration states your intent; consent is what you do every day.
A good opt-in is clear about what the person is agreeing to. For example: "Check this box to get appointment reminders from Smith Dental by text. Message frequency varies. Msg & data rates may apply. Reply STOP to cancel, HELP for help." The box should not be pre-checked, and agreeing to texts should not be hidden inside general terms.
Keep a record
For each contact, you want to be able to answer: when did they agree, how (which form or keyword), and to what kind of messages? If someone complains, that record is your evidence. A spreadsheet works for a small list; a system that stores consent alongside the contact works better as you grow. Phonify keeps a consent ledger where you record the consent behind each contact and check it before you reach out.
Never text purchased lists
People on a bought or rented list did not agree to hear from you. Texting them breaks the core expectation behind business texting, tends to generate complaints, and creates real legal exposure under the TCPA. It is also one of the fastest ways to get your messages filtered.
How do STOP, START and HELP keywords work?
STOP ends messages, START opts someone back in and HELP returns your business name and contact details, on every number, every time. It is the part of business texting compliance that is easiest to get right and most damaging to get wrong.
- STOP (and common variations like UNSUBSCRIBE, CANCEL, END, QUIT) must stop messages and trigger one confirmation reply.
- START lets someone opt back in.
- HELP should reply with your business name and how to reach a person.
These must work every time, on every number you text from. If a customer texts STOP to one number, your team should not reach them from a second number the next day. That means opt-outs need to live in one place that every team member and every number checks.
Phonify sends automatic STOP, START and HELP replies on its two-way SMS and MMS, and every reply from customers lands in a shared inbox the team can see. For more on running texting as a team, see our guide to the shared SMS inbox and two-way texting.
Why do 10DLC registrations get rejected or texts get filtered?
Most rejections come from business details that don't match official records, vague use cases or missing opt-in language; most filtering comes from content outside the registered use case. Check the table below before you submit, and again if delivery drops.
| Problem | What to do instead |
|---|---|
| Business details don't match official records | Copy legal name, EIN and address exactly from your registration documents |
| Vague use case | Describe who receives the texts and what they are for, in one specific sentence |
| No opt-in language or no clear way to opt in | Show the exact sign-up wording and where it appears |
| Website missing, broken or unrelated to the business | Use a live site on your own domain with a privacy policy and text terms |
| Sample messages don't look like real texts | Write samples with your business name, the actual content and opt-out language |
| Public link shorteners in messages | Use full links on your own domain, or a branded short domain you control |
| Content outside the registered use case | Register a separate campaign before sending a new kind of message |
The last one catches a lot of businesses. If you registered for appointment reminders and start sending promotions from the same campaign, expect filtering. Register the new use case first.
On Phonify, text campaigns on the Pro and Enterprise plans include templates, keywords, opt-out handling and registration tracking, so you can see where a campaign's registration stands. Two-way SMS is a $10 add-on, with SMS pricing per segment at $0.01.
Not legal advice: where to read the rules
The primary sources are the CTIA Messaging Principles and the FCC's TCPA rules. This is not legal advice. It is a plain-language overview to help you prepare. The rules that apply to your texts depend on your industry, your message content and how you collect consent. Read the official sources:
- CTIA Messaging Principles and Best Practices for the wireless industry's expectations on consent, opt-out and content
- The FCC's telemarketing and robocall rules, which cover the TCPA
- 47 CFR 64.1200, the TCPA regulation itself
If you are in a regulated industry such as healthcare, lending, debt collection or insurance, talk to counsel before launching a text program. The same goes for calls; our TCPA calling hours and DNC checklist covers the voice side.
Phonify provides the tools, including consent records and STOP handling, but compliance with the TCPA and carrier rules stays your responsibility.
Frequently asked questions
Do small businesses need 10DLC registration?
Yes, if they send business texts to US customers from a standard local 10-digit number. The major US wireless carriers expect any business sending application-to-person texts over 10DLC to register a brand and a campaign, regardless of company size. Smaller senders usually register with less volume, but the same information is required: legal details, a use case, sample messages and an opt-in description.
How long does 10DLC registration take?
It varies, from a few days to a few weeks, depending on how quickly the brand and campaign are reviewed and whether anything is sent back for correction. The fastest route is to submit complete, consistent details the first time: legal name and EIN matching official records, a live website with a privacy policy, and a specific use case with realistic sample messages.
What is the difference between 10DLC and toll-free texting?
10DLC uses standard local numbers with an area code, while toll-free texting uses 800-style numbers with their own separate verification process. Both are meant for business messaging and both require consent, opt-out handling and accurate business details. Local numbers suit businesses whose customers expect a familiar area code; toll-free suits national brands. Check the current requirements for whichever number type you choose.
Can I send marketing texts on a campaign registered for appointment reminders?
No. Content outside the registered use case is a common reason messages get filtered. If you registered a campaign for appointment reminders and want to send promotions, register a separate marketing campaign first, with its own sample messages and opt-in description, and only text promotions to contacts who agreed to receive marketing messages.
What should a HELP reply say?
A HELP reply should include your business name, what the text program is, and how to reach a person, such as a phone number, email address or website. Many businesses also restate how to opt out, for example "Reply STOP to cancel." Keep it short, send it every time someone texts HELP, and make sure it works on every number you text from.
