GoHighLevel A2P 10DLC Registration: Complete 2026 Step-by-Step Guide

A2P 10DLC (Application-to-Person 10-Digit Long Code) registration is a mandatory US carrier requirement for any business sending SMS messages from a standard 10-digit phone number. Without it, your SMS messages sent through GoHighLevel will be filtered or blocked by carriers — they appear to send in GHL but never arrive on the recipient’s phone. Registration takes 10 to 15 minutes to submit and 3 to 7 business days to approve. This guide walks through the exact GHL registration steps, the information you need to prepare, and how to fix the most common rejection reasons.

What Is A2P 10DLC and Why Does It Matter for GHL?

A2P stands for Application-to-Person — meaning SMS messages sent by a software application (like GoHighLevel) to real people. 10DLC stands for 10-Digit Long Code — the standard 10-digit US phone number format.

In 2021, US mobile carriers — AT&T, T-Mobile, and Verizon — implemented A2P 10DLC as a mandatory registration system for business SMS. The goal was to reduce spam and robotexting by requiring businesses to verify their identity and disclose the types of messages they send before their messages are delivered. Without registration, carriers treat your SMS as potential spam and either filter it, throttle it, or block it entirely.

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For GoHighLevel users, this has a specific consequence: every SMS workflow you build — missed-call text-back, lead nurture sequences, appointment reminders, review requests — will silently fail if your GHL phone number is not A2P registered. The messages appear to send in GHL’s workflow logs, but they are filtered at the carrier level and never arrive.

A2P Status	What Happens to Your SMS
Not registered	Messages filtered or blocked by US carriers — appear to send in GHL but never arrive
Registration pending	Messages may be delivered at reduced throughput — some arrive, some are filtered
Registered and approved	Full message delivery — carrier filtering removed, standard throughput restored
Registration rejected	Messages blocked until the rejection reason is resolved and re-submitted

Who Needs to Register

A2P 10DLC registration is required for any business sending SMS messages from a standard 10-digit US phone number. This includes:

Every GoHighLevel sub-account using LC Phone for SMS workflows — missed-call text-back, lead nurture, appointment reminders, review requests, or any other SMS automation
Agencies managing client sub-accounts — each sub-account with its own GHL phone number needs its own A2P registration
Businesses that ported an existing phone number into GHL — ported numbers still require A2P registration for business SMS

A2P registration is NOT required for:

Voice calls only — if you are using GHL’s phone system purely for inbound and outbound voice calls with no SMS, A2P registration is not required
WhatsApp messaging — WhatsApp uses a separate verification system, not A2P 10DLC
Short codes (5 or 6 digit numbers) — short codes have their own separate registration process and are not affected by 10DLC rules
Toll-free numbers (1-800 format) — toll-free numbers have a separate toll-free verification process, not 10DLC

Agencies: Register Every Sub-Account: A2P registration is per phone number, not per GHL account. If you manage 20 client sub-accounts each with their own GHL phone number, each requires its own A2P brand and campaign registration. Agencies that assume one registration covers all sub-accounts discover the error when client SMS campaigns silently fail.

What You Need Before You Start

Gather this information before beginning the registration — having it ready prevents half-completed submissions and errors that delay approval:

Business Information

Legal business name — exactly as registered with your state or federal government (not a DBA or trading name)
EIN (Employer Identification Number) — your US federal tax ID number. A2P registration requires a valid EIN. Sole proprietors without an EIN cannot complete standard A2P registration — see the Sole Proprietor section in FAQ.
Business type — Sole Proprietor, Partnership, LLC, Corporation, or Non-Profit
Business address — physical address (not a PO Box) of your registered business
Business website URL — must be a working website. The website should mention SMS communication or include a privacy policy that covers data collection
Business phone number — a working contact number for the business
Business email address — a business domain email (not Gmail or Yahoo)

Campaign Information

Use case — the primary reason you are sending SMS (e.g., Marketing, Customer Care, Appointment Reminders, 2FA)
Sample messages — 2 to 3 example SMS messages you will send. These must be representative of your actual messages and must include opt-out language
Opt-in method — how contacts gave you permission to text them (e.g., web form, verbal consent at point of sale, lead generation ad)
Opt-out mechanism — how contacts can stop receiving messages (standard: ‘Reply STOP to opt out’)
Help response — what contacts receive if they reply HELP (standard: ‘[Business Name] Support: [phone number] or [email]. Reply STOP to opt out.’)

Sample Message Tip: Your sample messages must match what you actually send. Do not write generic samples like ‘Hi, this is a test message.’ Write real examples: ‘Hi {{first_name}}, we missed your call at [Business Name]. What can we help you with? Reply STOP to opt out.’ Carriers flag mismatches between sample messages and actual sent messages as a compliance violation.

Step 1 — Navigate to A2P Registration in GHL

Log in to your GoHighLevel sub-account (not agency-level — registration is done at the sub-account level).
Go to Settings in the left navigation.
Click Phone Numbers.
Select the phone number you want to register — click the three dots menu or the number itself to open its settings.
Look for the A2P Registration or 10DLC Registration option. In GHL’s current interface (May 2026), this appears as a Compliance tab or a Register button next to the phone number.
If you are using LC Phone (GoHighLevel’s native phone system), the registration path is built into the GHL interface. If you connected a Twilio number directly, you may need to complete registration in your Twilio console and reference the brand SID in GHL settings.

Step 2 — Complete Brand Registration

Brand registration verifies your business identity with The Campaign Registry (TCR) — the central database that US carriers check before delivering A2P SMS. You register your brand once per business entity. If you have multiple phone numbers for the same legal business, they all share one brand registration.

In the A2P registration flow, select Register Brand.
Enter your Legal Business Name exactly as it appears on your EIN documentation. Mismatches between the name you enter and the name on your EIN are the most common rejection reason.
Enter your EIN. GHL or Twilio verifies this against IRS records — allow up to 24 hours for EIN verification on new or recently issued EINs.
Select your Business Type from the dropdown: Sole Proprietor, LLC, Corporation, Partnership, or Non-Profit.
Enter your registered business address, business phone number, business website URL, and business email.
Select your Vertical — the industry your business operates in (e.g., Professional Services, Healthcare, Real Estate, Home Services, Marketing).
Review all information and submit. Brand registration typically receives a decision within 24 to 72 hours.

Brand Registration Field	Correct Entry	Common Mistake
Legal Business Name	Exactly as on EIN / state registration documents	Using DBA or trading name instead of legal entity name
EIN	9-digit number formatted as XX-XXXXXXX	Using SSN instead of EIN, or entering a recently issued EIN before IRS records update
Business Type	Select the legal entity type (LLC, Corp, etc.)	Selecting ‘Sole Proprietor’ when registered as an LLC
Business Website	Working URL with accessible content	Entering a website under construction, or one with no privacy policy
Business Email	Domain email (name@yourbusiness.com)	Using Gmail, Yahoo, or Hotmail addresses
Vertical	Your actual industry — be specific	Selecting ‘Marketing’ for all businesses regardless of actual industry

Step 3 — Create Your Campaign

A campaign in the A2P context is not a marketing campaign — it is a description of the category of SMS messages you send. Each campaign is associated with a specific use case and the phone numbers that send those messages. After brand registration is approved, you create one or more campaigns linked to that brand.

Selecting Your Use Case

Choose the use case that most accurately describes your primary SMS communication:

Use Case	Description	Typical GHL User
Marketing	Promotional messages, offers, campaigns to opted-in contacts	Agencies, e-commerce, info product businesses
Customer Care	Support messages, service updates, non-promotional contact	Service businesses, SaaS companies
Appointment Reminders	Reminders for scheduled appointments or events	Med spas, home services, dental, coaches
2FA / OTP	One-time passwords and verification codes	SaaS platforms, apps
Account Notifications	Account updates, status changes, system notifications	B2B SaaS, enterprise software
Mixed	Combination of promotional and non-promotional messages	Agencies running multiple workflow types
Low Volume Mixed	Low-volume senders using multiple message types	Small businesses, solo operators under 2,000 messages/month

For most GoHighLevel users — agencies and service businesses sending lead nurture, appointment reminders, and review requests — the most common use case selections are Marketing, Customer Care, Mixed, or Low Volume Mixed. If your primary SMS use case is appointment reminders (med spas, home services, coaches), select Appointment Reminders as the primary use case.

Completing Campaign Details

Campaign Description: Write 2 to 3 sentences describing exactly what types of messages you send and to whom. Example: ‘We send appointment reminders, follow-up messages, and review requests to clients who have opted in via our website contact form or in-person intake form. All contacts have explicitly consented to receive SMS from our business.’
Sample Message 1: Write a real example of the most common message you send. Include your business name and an opt-out instruction. Example: ‘Hi {{first_name}}, your appointment at [Spa Name] is tomorrow at 2pm. Reply YES to confirm or call us to reschedule. Reply STOP to opt out.’
Sample Message 2: Write a second representative example. If you send review requests: ‘Hi {{first_name}}, thank you for visiting [Business Name] today! If you have a moment, we’d love a Google review: [link]. Reply STOP to opt out.’
Opt-In Method: Describe how contacts consent to receiving SMS. Be specific: ‘Contacts opt in by submitting our website contact form, which includes a checkbox stating they consent to receive SMS from [Business Name].’ or ‘Contacts provide verbal consent at point of service and are added manually to our CRM.’
Check the boxes confirming opt-out (STOP) and HELP responses are included in your messages.
Link the campaign to your phone number(s). Each number can only be linked to one campaign at a time.
Submit the campaign. Campaign approval typically takes 3 to 7 business days after brand approval.

Step 4 — Submit and Wait for Approval

After submitting both your brand and campaign, the review process is handled by The Campaign Registry and the individual carriers. GHL (via LC Phone or Twilio) communicates the status back to your account.

Where to Check Status in GHL

Go to Settings > Phone Numbers > select your number > Compliance or A2P Registration tab
Status indicators: Pending Review, In Review, Approved, Rejected, or Action Required
GHL also sends email notifications when your brand or campaign status changes — ensure the email on your GHL account is actively monitored

What to Do While Waiting

Build your SMS workflows in GHL — you can create and test workflows while registration is pending
Test workflows using your own mobile number — send test SMS to your personal phone to verify message content, timing, and merge fields
Do NOT activate SMS workflows for live leads until A2P registration is approved — filtered messages during the pending period can damage your sender reputation
If you need SMS immediately and cannot wait, consider using a toll-free number (1-800 format) with toll-free verification — approval is faster (24 to 48 hours) though throughput limits are lower

Read this: Migrate to GoHighLevel: Complete 2026 Master Guide (Any Platform)

Approval Timelines: What to Expect

Registration Stage	Typical Timeline	What Affects Speed
Brand registration submitted	24-72 hours for initial decision	EIN verification speed — new EINs take longer than established ones
Brand approved	Immediate — unlocks campaign submission	No action needed; proceed to campaign creation
Campaign submitted	3-7 business days	Use case selection — simpler use cases (Appointment Reminders) approve faster than Marketing
Carrier vetting (T-Mobile)	Additional 1-3 business days after TCR approval	T-Mobile does independent vetting — adds time on top of TCR approval
Full approval (all carriers)	5-10 business days total from initial brand submission	EIN issues, website problems, or vague sample messages add time
Rejection and re-submission	Add 3-5 business days per re-submission	Fix all flagged issues before re-submitting — partial fixes result in re-rejection

Start Registration Early: The single most important advice for GHL users setting up SMS workflows: submit your A2P registration the day you set up your GHL sub-account — not the day before you launch. A 5 to 10 business day approval window means businesses that register on day one are SMS-ready by end of week two. Businesses that register when they are ready to launch wait an extra two weeks with no SMS capability.

Common Rejection Reasons and How to Fix Them

Rejection 1: EIN not found or does not match business name. The most common rejection. The name you entered during brand registration does not match the name on your EIN as recorded with the IRS. Fix: Check your CP 575 EIN confirmation letter from the IRS for the exact legal name. Enter it character-for-character — including punctuation like commas and periods (e.g., ‘Smith Marketing, LLC’ not ‘Smith Marketing LLC’).

Rejection 2: Website does not meet requirements. The website URL you submitted is inaccessible, under construction, or lacks required content. Fix: Ensure your website is live, loads without errors, and includes a Privacy Policy page that mentions how you collect and use customer data including phone numbers. The website must also have some mention of SMS communication or a terms of service.

Rejection 3: Sample messages do not include opt-out language. Every sample message in your campaign registration must include ‘Reply STOP to opt out’ or equivalent opt-out language. Fix: Update all sample messages to include STOP language at the end. Also ensure HELP responses describe what the recipient receives when they text HELP.

Rejection 4: Opt-in description is too vague. Descriptions like ‘customers opt in via our website’ are insufficient. Fix: Be specific: ‘Contacts submit our website contact form at [URL], which includes a mandatory checkbox with the text: I agree to receive SMS messages from [Business Name]. Contact information is not shared with third parties.’

Rejection 5: Use case mismatch. Your selected use case does not match your sample messages. For example, selecting ‘Customer Care’ but submitting sample messages that are clearly promotional offers. Fix: Select Mixed if you send both promotional and service messages, or correct the use case to match your primary message type.

Rejection 6: Sole Proprietor without EIN. Sole proprietors without an EIN cannot complete standard A2P registration. Fix options: (a) Apply for an EIN from the IRS at irs.gov — free and immediate online. (b) Use a toll-free number with toll-free verification instead of 10DLC. (c) Upgrade to an LLC and register the business entity for standard 10DLC.

A2P Registration for Agencies: Managing Multiple Sub-Accounts

For agencies running GoHighLevel sub-accounts for multiple clients, A2P registration needs to be completed separately for each client’s business. Here is how to manage this efficiently:

Option A: Each Client Registers Their Own Brand

The client provides their own EIN, business name, and website. You submit the brand registration on their behalf inside their GHL sub-account. The campaign is registered under their business identity. This is the correct approach for clients who are the legal sender of the SMS — they are responsible for compliance.

Advantage: Compliance sits with the client’s legal entity — accurate and transparent
Advantage: Higher trust score for established businesses with a long EIN history
Disadvantage: Requires the client to provide EIN and business information — adds an onboarding step

Option B: Agency Registers Under Its Own Brand (Reseller Path)

Some agencies register under their own brand as an SMS reseller and associate client phone numbers with the agency’s campaign. This is permitted in some cases but has throughput limitations and may not be appropriate for all use cases — check current TCR and carrier guidelines before using this approach.

Advantage: Faster onboarding — no need to collect client EIN for each new client
Disadvantage: Lower message throughput per number under shared brand registration
Disadvantage: Compliance risk — the agency is the registered sender for all client messages

Agency A2P Workflow

When onboarding a new client, request their EIN and business registration documents as part of the onboarding checklist.
Navigate to the client’s GHL sub-account and complete brand registration using their business information.
Create the campaign under their brand, selecting the use case that matches their primary SMS workflow type.
Link their sub-account phone number to the campaign.
Do not activate SMS workflows in the client’s sub-account until approval is confirmed.
Add A2P registration status to your client onboarding tracker — flag any clients with pending or rejected registrations so you do not accidentally launch SMS workflows before approval.

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What Happens If You Send SMS Without A2P Registration

This is the most important section for GHL users who are already running SMS workflows or are about to launch them. The consequences of sending without A2P registration are invisible in GHL but immediately felt by your leads and clients.

Consequence	What You See in GHL	What the Recipient Experiences
Message filtering	Message shows as Delivered in GHL workflow logs	Message never arrives — recipient sees nothing
Message blocking	Message shows as Failed or Undelivered in GHL	Message blocked — recipient sees nothing
Throughput throttling	Messages send but slowly	Recipient receives message hours after it was sent — sequence timing is broken
Carrier penalties	No change visible in GHL	Your phone number may be added to carrier spam lists — harder to get registered later
Opt-out spam reports	Not visible in GHL	Recipients who receive unwanted unregistered SMS are more likely to report spam — damages number reputation

The deceptive part of unregistered SMS is that GHL’s workflow logs often show messages as delivered even when they are filtered at the carrier level. Businesses discover the problem when leads stop responding, when clients complain they are not receiving reminders, or when they realise their missed-call text-back has never worked. By that point, significant revenue has been lost to leads who called, got a text, received nothing, and called the competitor instead.

If you want ghlcrms to handle A2P 10DLC registration for your GHL sub-account — brand registration, campaign setup, sample message review, and rejection resolution — book a free strategy call below.

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Frequently Asked Questions

What is A2P 10DLC registration and why do I need it for GoHighLevel?

A2P 10DLC is a mandatory US carrier compliance requirement for businesses sending SMS from standard 10-digit phone numbers. Without it, messages sent through GoHighLevel are filtered or blocked by carriers — they show as sent in GHL but never arrive on the recipient’s phone. Registration verifies your business identity and the types of messages you send, which unlocks full SMS delivery through AT&T, T-Mobile, and Verizon networks.

How long does A2P 10DLC registration take in GoHighLevel?

Brand registration typically receives a decision within 24 to 72 hours. Campaign registration takes an additional 3 to 7 business days. T-Mobile independently vets campaigns and may add 1 to 3 business days on top of TCR approval. Total time from submission to full approval across all carriers is typically 5 to 10 business days. Submit registration the day you set up your GHL sub-account — not when you are ready to launch SMS workflows.

Do I need an EIN to register for A2P 10DLC in GoHighLevel?

Yes, for standard 10DLC registration. An EIN (Employer Identification Number) is required to verify your business identity with The Campaign Registry. Sole proprietors without an EIN can apply for one free at irs.gov in minutes. Alternatively, sole proprietors can use a toll-free number with toll-free verification instead of 10DLC — toll-free verification does not require an EIN and approves in 24 to 48 hours.

Read this: Keap to GoHighLevel Migration: No Data Loss (2026 Step-by-Step Guide)

Why was my A2P 10DLC registration rejected in GoHighLevel?

The most common rejection reasons are: (1) the business name entered does not exactly match the name on your EIN documents; (2) your website is inaccessible or lacks a privacy policy; (3) sample messages do not include opt-out language (Reply STOP to opt out); (4) the opt-in description is too vague; (5) use case selected does not match the sample messages submitted. Fix the flagged issue specifically before re-submitting — partial fixes result in re-rejection and add another 3 to 7 day wait.

Does every GHL sub-account need its own A2P registration?

Yes. A2P registration is per phone number, not per GHL account. Each sub-account with its own GHL phone number requires its own brand and campaign registration. For agencies managing multiple client sub-accounts, each client’s phone number must be registered under that client’s business identity (EIN and legal business name). One registration does not cover multiple sub-account phone numbers.

Can I send SMS in GoHighLevel while A2P registration is pending?

Technically yes — GHL will send the messages. But messages sent during the pending period are treated as unregistered by carriers and may be filtered, throttled, or blocked. The safest approach is to build and test your workflows during the pending period (using your own mobile number for test sends) and only activate workflows for live leads after approval is confirmed. If you need immediate SMS capability, a toll-free number with toll-free verification approves in 24 to 48 hours as an interim solution.

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GoHighLevel A2P 10DLC Registration: Complete 2026 Step-by-Step Guide

What Is A2P 10DLC and Why Does It Matter for GHL?