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A2P Registration

Grace from Ivorey™ avatar
Written by Grace from Ivorey™
Updated this week

Before You Dive In

Before you steam ahead in submitting your A2P Brand or Campaign registration, here's some good-to-know information that will ensure you understand what A2P registration is, and whether it is required based on your needs.

What is A2P and why do I need it?

Some countries require legal documentation before a number can be activated. These are industry regulations, not something Ivorey™ controls, and are handled via third-party review.

If you want to register phone services in the United States through Ivorey™, then A2P 10DLC registration is a legal requirement. A2P means "Application-to-Person" and 10DLC is your 10-Digit Long Code (your standard business phone number).

You'll need to purchase and complete A2P registration, which verifies your business as a legitimate sender for SMS and helps you to stay compliant and avoid being flagged as spam.

What's a trust score?

After you register, your brand gets a Trust Score. It tells carriers how trustworthy your brand is. Higher scores = higher message throughput (faster and more reliable sending).

Your Trust Score is based on:

  • Whether your info matches across your website, brand name, and messages

  • How transparent you are about opt-in and opt-out

  • Your messaging history


This guide is perfect if you're looking to:

  • Complete your A2P Registration so you can make phone calls and/or send SMS's in the USA

Note: If you're registering for an Australian number, you'll require a Regulatory Address Bundle instead, not A2P.


What You Need Before You Start

Make sure you have the following items ready:

  • Registration fee of $15 USD (passed onto third party provider)

  • Business Legal Name (must exactly match IRS records)

  • Valid EIN (Employer Identification Number)

  • Business Type: LLC, Corporation, etc.

  • Business Industry

  • Official Business Website

  • Business Address

  • Business Contact Information

  • Authorized Representative’s Name, Title, Email, and Phone Number


Step 1: Submit A2P Standard Brand Registration

The approval process can be tricky. Please make sure all your information is accurate and consistent. Incorrect or inconsistent details are the #1 reason applications get rejected. New EINs (issued in the last 45 days) are also often rejected. Consider waiting or submitting supporting documents in this case.

Click here for the written instructions

  1. From the Ivorey main menu, go to [Settings] > [Phone Services] > [Trust Center] > and under A2P Messaging, click the [Start Registration] button

    1. If your business has a Tax Number (EIN for the US, CCN for Canada, etc.), please select [Yes, the business I’m registering has a US EIN] (Standard Low Volume Brand Registration)

    2. If your business does not have a Tax Number but operates from a valid Business Address in the US/Canada, please select [No, the business I’m registering does not have a US EIN] (Sole Prop Brand Registration)

    3. If your business does not have a Tax Number and the business address is not in US/Canada, unfortunately you cannot proceed with A2P Brand Registration. In this case, the best alternative would be to use Toll-Free numbers

  2. Enter your business details:

    1. Legal Business Name - Exactly as shown on your CP 575 (IRS EIN confirmation letter). Note: This is case sensitive

    2. Business Type - Choose from the list (LLC, Corporation, etc.)

    3. Registration ID Type + Number - EIN for U.S. businesses

    4. Industry - Choose your business category

    5. Business Email - use a domain-branded email (i.e. not a Gmail address, for example)

    6. Website URL

    7. Region of Operations

    Click [Continue]

  3. Enter your registered business address, including Country, State, City, Zip Code, and Street Address. Note: This must be a real street address, and cannot be a PO Box address. Click [Continue]

  4. Enter your Authorised Representative (e.g. yourself), including Full Name, Business Email Address (not your personal email address), Phone Number, and Job Title. Click [Continue]

  5. Choose Your Brand Type:

    1. Low Volume Standard (suitable for most):

      • Up to 6,000 message segments/day

      • One-time fee: ~$23.95 (includes fast-track)

      • Up to $12 USD/month campaign fee

    2. High Volume Standard:

      • Up to 600,000 message segments/day

      • One-time fee: ~$68.05 (includes fast-track)

      • Up to $12 USD/month campaign fee

  6. Add Campaign Details:

    1. Write how you’ll use SMS. Example: “We send appointment confirmations and reminders to customers who’ve opted in via our booking form.”

    2. Sample messages must include the lead's name, your business name, and an opt-out line (e.g. “Reply STOP to unsubscribe”)

      Example 1: Hi Sarah! This is Mia from [Business Name]. Your session for March 10 is confirmed. Need to reschedule? Call 555-555-5555. Reply STOP to unsubscribe.

      Example 2: Hey Sam! This is [Business Name]. It looks like you missed your appointment. Book a new time here: www.yourbusinessname.com/reschedule. Reply STOP to unsubscribe.

    3. Select message content options (e.g. “contains link,” “includes phone number”)

    Click [Continue]

  7. Add Consent Details:

    1. Clearly explain how customers opt in, ensuring to always include the proof of links etc. where appropriate.

      Consent Example: “Customers opt in via our website at www.yourbusinessname.com/book. They check a box confirming they want to receive reminders and updates.

      Opt-In Confirmation Example: “You’re subscribed to SMS updates from [Your Business Name]. Reply STOP to unsubscribe."

  8. Compliance Review:

    1. The system will automatically scan and validate your Opt-in form, Privacy Policy and Terms of Service, using the URLs provided

    2. You will then be able to see line-by-line which items passed or failed the compliance review, with clear guidance on what needs to be updated

    3. You will not be prevented from proceeding with your A2P submission, even if some criteria are flagged as missing in your Opt-in forms, Privacy Policy, or Terms of Service. You can choose to:

      1. Click [Proceed] to submit your application, without addressing the issues outlined in the compliance review

      2. Click the X or [Back] button, to address the issues and proceed

    Note: While this compliance review is designed to reduce common causes of rejection, the feedback and suggestions provided do not guarantee carrier approval.

  9. When you're ready, click [Submit]

What Happens After A2P Submission?

After you hit Submit on your A2P Brand registration application:

  • Your application goes for third party approval. This process can take up to 2 weeks, but is usually quicker. Please note that Ivorey™ has zero control over this process and we cannot do anything to speed it up.

  • If denied, you'll need to address any errors and resubmit.

  • Once your Brand registration is successfully approved as part of the A2P 10DLC setup, the next essential step is to register a Campaign associated with that Brand. This step is mandatory to begin sending A2P messages through 10DLC phone numbers. It’s very important to note that Campaign registration is not triggered automatically once your Brand gets approved.

  • You will need to manually submit the Campaign registration yourself, after Brand approval. Until this is done, your A2P 10DLC setup remains incomplete, which means you will not be able to send compliant SMS messages through your 10DLC numbers.


Step 2: Submit A2P Campaign Registration

After receiving confirmation that your Brand is approved, you must complete your Campaign registration.

Click here for the written instructions

  1. From the Ivorey™ main menu, go to [Settings] > [Phone Services] > [Trust Center] > and under A2P Messaging, click the [Create Campaign] button

  2. Follow the prompts to complete the Campaign registration form

  3. Await Campaign approval before using your number for A2P messaging


Frequently Asked Questions

What’s the difference between Sole Proprietor and Standard Brand?

Sole Proprietor is for individuals without an EIN. Standard Brand is for registered U.S. businesses with an EIN.

Why was my A2P brand registration rejected?

Likely reasons for an A2P rejection include EIN mismatch, invalid website, or use of a PO Box address. Ensure the legal business name and EIN number match exactly to what’s shown on the CP 575 form. Do not use the business name found on W2 or W9 forms, as they may differ. If the business name spans multiple lines on your CP 575/147c letter, you must enter all lines above the address line during registration.

  • Example:
    ABC Holding Group Inc.
    Division of Regional Services
    123 Main Street
    New York, NY 10001

    The legal name to enter would be: ABC Holding Group Inc. Division of Regional Services

Can I add new numbers after completing A2P Brand and Campaign Registration?

Yes, after your brand and campaign are approved, you can add new numbers which will be automatically registered under the same campaign. There is no resubmission is needed, but it may take several days for registration to complete.


Need Help?

Hit the support chat widget inside Ivorey™ - we can:

  • Walk you through any of the steps

  • Troubleshoot anything that’s not working

We’re here and ready to help via the chat widget in the bottom right of your Ivorey™ account. Or if you are looking for done-for-you support, you can browse our current services here 🤍

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