SENDER IDS

Aggregator Registration of Sender ID

If you provide SMS services to customers, operate a messaging platform, or deliver communications on behalf of other organisations, Sender ID registration in Australia may require additional considerations.

Whether you’re an SMS aggregator, CPaaS provider, software platform, marketing automation provider, or international messaging provider, Modica can help you navigate Australia’s SMS Sender ID Register framework and register Sender IDs for eligible customers.

As an ACMA-approved Certified Telco, Originating Telco and Transiting Telco, Modica supports aggregators and messaging providers that need a compliant pathway for Sender ID registration and SMS delivery into Australia.

Who Is This Page For?

This page is designed for organisations that send SMS messages on behalf of other organisations, including:

SMS aggregators
Messaging providers
CPaaS platforms
SaaS platforms
Marketing automation providers
Customer engagement platforms
International messaging providers
White-label SMS providers
Resellers

If your customers use branded Sender IDs when communicating with Australian recipients, this page is for you.

Why Register Properly Now?

For aggregators, messaging providers and software platforms, Sender ID registration is no longer simply an administrative task - it is becoming an important part of maintaining compliant SMS delivery into Australia.

The ACMA Sender ID Register framework places obligations on organisations involved in registering and sending Sender ID traffic. Registration is not just about obtaining approval for a Sender ID; it also involves ensuring the correct customer relationships, authorisations, verification requirements and registration pathways are followed.

While some providers may offer shortcuts or reduced verification processes, organisations should carefully consider whether those approaches will continue to meet evolving compliance requirements.

Choosing a compliant registration pathway from the beginning can help reduce:

Delays caused by incomplete or rejected registrations
Re-registration requirements when changing providers
Additional verification requests at a later date
Sender IDs being labelled “Unverified”
Message filtering or delivery issues
Operational disruption for customers relying on SMS communications

For aggregators managing large customer bases, resolving registration issues after services are live is often significantly more complex than completing the correct registration process upfront.

As an ACMA-approved Certified Telco, Modica works with customers to ensure registrations are completed using the appropriate pathway and supported by the required documentation, authorisations and verification processes.

Our goal is not simply to register Sender IDs, but to help customers build a registration framework that supports long-term compliance and uninterrupted messaging services.

Can Aggregators Register Sender IDs for Customers?

Yes.

Aggregators can register Sender IDs for eligible customers, provided the registration complies with the requirements of the ACMA Sender ID Register framework.

In many cases, Modica can support this process by helping verify customer information, manage registration workflows, and ensure the appropriate registration pathway is followed.

The exact process depends on:

Whether the customer is your direct customer
Whether messages are being sent on behalf of another organisation
Whether the organisation has an Australian Business Number (ABN)
Whether international registration requirements apply

How Modica Supports Aggregators

Modica supports a wide range of aggregator and messaging-provider use cases.

We can assist with:

Sender ID registration
Registration guidance
Customer onboarding
Verification requirements
International registrations
Compliance support
Partner onboarding
Ongoing Sender ID management

For many aggregators, working with Modica provides a simpler way to support Australian Sender ID requirements without needing to build and maintain the compliance processes internally.

Registering Sender IDs for Direct Customers

If you have a direct relationship with the organisation that owns the Sender ID, registration is generally straightforward.

You’ll typically need to provide:

Organisation details
Registration information
Contact information for an authorised representative
Sender ID details
Business use case information

The Sender ID should clearly relate to the organisation’s business name, trademark, brand, domain, or recognised acronym.

Registering on Behalf of Another Organisation

Some organisations send SMS messages on behalf of another business.

Examples include:

Marketing agencies
Communications providers
Customer engagement platforms
Managed service providers

In these situations, additional authorisation may be required to demonstrate that the organisation sending the messages has permission to use the Sender ID owner’s brand, trademark, or business identity.

Modica can help determine which registration pathway applies.

International Messaging Providers

International messaging providers and aggregators frequently need to support customers that send SMS messages into Australia.

Modica can assist with:

International Sender ID registration
Non-ABN registrations
Customer verification requirements
Partner onboarding
Registration guidance

As an ACMA-approved Certified Telco, Modica can support registration pathways that may not be available through every provider.

Do Aggregators Need to Become Participating Telcos?

Not necessarily.

Some aggregators choose to become Participating Telcos under the ACMA framework, while others work with providers such as Modica to support Sender ID registration and message delivery requirements.

The most appropriate approach depends on your business model, customer base, and operational requirements.

If you’re unsure which approach is right for your organisation, our team can help.

What Information Will Aggregators Need to Provide?

Requirements vary depending on the registration type and customer structure.

Typical information may include:

Aggregator Information

Organisation name
Registration details
Website
Contact information
Authorised representative details

Customer Information

Organisation name
Registration details
Contact information
Website
Authorised representative details

Sender ID Information

Sender ID
Intended use
Supporting business justification

Additional information may be required depending on the registration scenario.

Common Aggregator Scenarios

1. We provide SMS services directly to businesses

This is typically the simplest registration model.

2. We send SMS on behalf of marketing agencies

Additional authorisation requirements may apply.

3. We are an international messaging provider

Additional registration and verification requirements may apply.

4. We provide white-label messaging services

Registration requirements depend on who owns the customer relationship and who owns the Sender ID.

5. We support multiple brands and business units

Multiple Sender IDs can be registered provided each Sender ID has an appropriate business justification.

Why Aggregators Choose Modica

Aggregators choose Modica because we provide more than message delivery.

As an ACMA-approved Certified Telco, Modica can help:

Support Australian and international customers
Assist with Sender ID registration
Navigate compliance requirements
Support non-ABN registration pathways
Manage registration workflows
Reduce operational complexity

Whether you’re registering a handful of Sender IDs or managing registrations across thousands of customers, Modica can help simplify the process.

Frequently Asked Questions

Can aggregators register Sender IDs for customers?

Yes. Aggregators can register Sender IDs for eligible customers, subject to the applicable registration requirements.

Can Modica register Sender IDs on behalf of our customers?

Yes. Modica can support Sender ID registrations for eligible organisations and help determine the appropriate registration pathway.

Do all of our customers need their own registration?

Registration requirements depend on the customer relationship, ownership of the Sender ID, and intended use case.

What if our customer does not have an ABN?

Organisations without an Australian Business Number may require the Certified Telco registration pathway.

Can international messaging providers use Modica?

Yes. Modica supports international messaging providers and aggregators that need a compliant pathway for Australian Sender ID registration.

Do we need to become a Participating Telco?

Not necessarily. Many organisations work with Certified Telcos such as Modica rather than becoming Participating Telcos themselves.

How many Sender IDs can we register?

There is no fixed limit provided each Sender ID has an appropriate business justification.

Why shouldn't I just use the cheapest registration option available?

Sender ID registration is more than simply submitting a Sender ID for approval.

Depending on your organisation type, customer relationships and messaging model, additional authorisation, verification and compliance requirements may apply.

Choosing a registration partner that understands these requirements can help reduce the risk of future rework, registration issues, delivery problems or compliance concerns.

For organisations sending business-critical SMS messages, taking the correct registration pathway from the outset is often the most efficient long-term approach.

Can Modica help us understand which registration pathway applies?

Yes. Our team can help identify the most appropriate registration approach based on your business model and customer structure.

Ready to Support Your Customers?

Whether you’re an SMS aggregator, CPaaS provider, SaaS platform, messaging provider or international partner, Modica can help you navigate Australia’s Sender ID registration requirements.

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Or contact our team to discuss your registration and compliance requirements.