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How to Register an SMS Sender ID in Australia: Step-by-Step Guide

How to Register an SMS Sender ID in Australia

If your business sends SMS using its business name instead of a mobile number, you’ll need to register that Sender ID before sending branded SMS in Australia.

As of August 2026, ACMA requires businesses using branded SMS Sender IDs to register them. The register was introduced to stop scammers impersonating legitimate businesses through SMS and improve customer trust.

If your Sender ID isn’t registered, your messages may appear as “Unverified” on supported mobile networks, making customers less likely to trust or engage with them.

This guide explains exactly how to register your SMS Sender ID, what you’ll need before you start, and the common mistakes to avoid. Not sure whether you need to register? Read our SMS Sender ID Register Australia guide first to understand who needs to register, what happens if you don’t, and how the new ACMA rules work.

Do You Need to Register?

You’ll generally need to register if your business sends SMS using its business name instead of a phone number.

This commonly includes:

  • One-time passwords (OTPs)
  • Marketing campaigns
  • Appointment reminders
  • Delivery notifications
  • Payment reminders

You do not need to register if you send one to one messages from a normal mobile number. If your customers already see a phone number rather than your business name, nothing changes for you.

Before You Register, Understand This

A branded SMS Sender ID is designed for one-way messaging. Because customers see your business name instead of a phone number, they generally can’t reply to your messages.

If two-way conversations are important, for example, appointment confirmations, enquiries or booking changes, then a Virtual Mobile Number or SMS Gateway may be a better solution. We’ll cover these options later in this guide.

Before You Start: What You’ll Need

Before beginning your registration, make sure you have the following information ready:

  • Your Australian Business Number (ABN)
  • The Sender ID you want to register (up to 11 alphanumeric characters)
  • A myID account linked to your identity (if you don’t already have one)
  • An authorised business email linked to your ABN on the Australian Business Register (ABR)
  • A short description of how you’ll use the Sender ID (such as appointment reminders, marketing campaigns, invoices or customer notifications)

Having these details ready before your provider lodges the application will help avoid unnecessary delays during verification.

Tip: Before you start, check that your authorised contact details on the Australian Business Register are up to date. Outdated ABR records are one of the most common reasons registrations are delayed.

Can You Register an SMS Sender ID Directly with ACMA?

While the ACMA SMS Sender ID Register manages the registration framework, you don’t start the process by submitting an application directly to ACMA yourself.

Instead, your telecommunications or SMS provider lodges the registration request on your behalf. Once the application has been submitted, you’ll receive an email from ACMA asking you to verify your identity and approve the registration through ACMA Assist using your myID account.

This two-step process confirms both that your business owns the Sender ID and that your chosen provider is authorised to use it when sending SMS on your behalf.

If your business sends SMS through multiple providers, each provider may require its own registration for the same Sender ID.

How to register your SMS Sender ID

Step 1: Check Your Australian Business Register (ABR) Details

Before you begin, make sure your Australian Business Register (ABR) details are up to date. If the email address linked to your myID doesn’t match the authorised contact information recorded for your business, you may not be able to complete the verification process.

Before you begin, check:

  • Your ABN details are correct.
  • The authorised contact email is current.
  • The authorised representative can access that email.

Step 2: Choose a Suitable Sender ID

Your Sender ID should clearly represent your business and comply with ACMA’s requirements.

Generally, it should:

  • Be no more than 11 characters.
  • Clearly relate to your business name or brand.
  • Avoid using generic or misleading names.

Tip: Before lodging your application, ask your SMS provider or Broadconnect to review your preferred Sender ID. Identifying potential issues early can help avoid unnecessary delays or rejected applications.

Step 3: Ask Your SMS Provider to Lodge the Registration

Contact the SMS provider that sends your business messages and ask them to lodge your Sender ID registration.

In most cases they’ll ask for:

  • Your ABN
  • Your preferred Sender ID
  • An authorised business contact
  • A brief description of how you’ll use SMS

If you use multiple SMS providers, registration may be required for each provider.

Step 4: Complete Verification Through ACMA Assist

After your provider submits the application, ACMA will email you to complete the verification process.

Simply:

  • Approve the application.der before contacting your provider.
  • Sign in with myID.
  • Confirm your business details.
  • Review your Sender ID.

If your ABR contact details don’t match your myID information, your application may be delayed.

Step 5: Wait for Approval and Activate Your Sender ID

Once your registration is approved, your Sender ID will become available in your SMS platform.

If it doesn’t appear after approval, contact your SMS provider to confirm the registration has been activated.

Common SMS Sender ID Registration Mistakes

Most registrations are straightforward, but simple mistakes can delay approval. Before applying, make sure your Sender ID clearly matches your business, your ABR details are up to date, and you’ve identified every SMS platform your business uses. It’s also worth checking whether your existing Sender ID is already registered before submitting a new application.

If Registering a Sender ID Isn’t Right for You

A registered Sender ID isn’t the best fit for every business, especially if customers need to reply to your messages.

Virtual Mobile Number
A virtual mobile number lets you send SMS without registering a Sender ID. Broadconnect sets this up using a Yeastar Virtual Mobile Number, allowing outbound messages and inbound replies to sit alongside your business phone system. The trade-off is that customers see a mobile number instead of your business name.

SMS Gateway
An SMS Gateway is ideal for businesses sending high volumes of SMS or automated messages from CRMs, booking systems and other business applications. It can be configured to use either a registered Sender ID or a virtual mobile number.

Not sure which option is right? Broadconnect can help you choose the best solution for your business.

How Broadconnect Can Help

Whether you’re registering a Sender ID for the first time or reviewing your business SMS setup, Broadconnect can help you choose the right solution.

If a registered Sender ID is the best fit, we’ll guide you through the registration process, review your chosen Sender ID, help identify potential issues before you apply, and assist if you encounter problems during the ACMA Assist verification process.

If a Virtual Mobile Number or SMS Gateway is a better option for your business, we can set that up too.

Not sure where to start? Talk to our team and we’ll help you find the right solution for your business.

Talk to Our Team

Frequently Asked Questions

Do I need a myID account to register?

Yes. During the registration process, ACMA uses myID to verify you’re authorised to act on behalf of your business. If you don’t already have one, you’ll need to set it up before completing your registration.

What if the authorised contact on our ABN has changed?

Update your Australian Business Register (ABR) details before starting your application. Outdated contact information is one of the most common causes of registration delays.

Can I register more than one Sender ID?

Yes. Businesses can register multiple Sender IDs, provided each one has a clear connection to the business and meets the registration requirements.

If I change SMS providers, do I need to register again?

Yes. Sender ID registrations are linked to the provider submitting the application. If you move to a different provider, a new registration may be required.

What happens if I don’t register my Sender ID?

If your business uses a branded Sender ID and it isn’t registered, your messages may appear as “Unverified” on supported mobile networks, making them less likely to be recognised and trusted by customers.

In Summary

If your business sends SMS using its business name, registering your Sender ID helps protect your brand and ensures your messages continue to be recognised by customers.

Before you begin, make sure your ABR contact details are up to date, choose a Sender ID that clearly represents your business, and work with your SMS provider to complete the registration process.

If you’re unsure whether a registered Sender ID, Virtual Mobile Number or SMS Gateway is the best solution, Broadconnect can help you choose the right option and guide you through the next steps.

Call: 1300 880 330
Email: hello@broadconnect.com.au
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