The SMS sender ID register in Australia:
What businesses need to know
To help safeguard Australians from phishing and spoofing scams, new requirements are being introduced for businesses that use Alphanumeric Sender IDs.
Quick Overview
From 15 December 2025 your Alphanumeric Sender IDs will need to be registered with the Australian Communications and Media Authority (ACMA). Unregistered IDs will be replaced with "Unverified" and may be blocked by Telecommunications providers (Telcos).
Kudosity makes compliance easy. We give Australian businesses a secure, privacy-first trusted messaging platform, backed by local infrastructure and 24/7 real expert support.
What is an SMS Sender ID?
A Sender ID is the name that appears at the top of an SMS message instead of a phone number.
It’s often used by businesses to show the brand name (e.g., "myGov", "Kudosity", or "CityClinic") so recipients know exactly who the message is from.
Secure, compliant messaging for Australian businesses
From 15 December 2025, the Australian Communications and Media Authority (ACMA) will introduce the SMS Sender ID Register a new standard requiring all alphanumeric Sender IDs (like "MyBrand") to be verified.
If your business is sending branded SMS without a registered ID, your messages may be:
Flagged as 'Unverified'
Blocked from delivery by telcos.
Trigger SMS from any email client.
Damaging to your customer trust and conversion rates.
This isn't just a technical issue, it's a reputational one.
Kudosity is here to make compliance simple, secure and stress-free.
Compliance timeline:
What's changing and when
Why Australia’s most trusted
brands choose Kudosity
Australian Owned
and managed
As a 100% Australian-owned and operated company, we understand local regulations. Our teams and expertise can help you navigate Australia's changing compliance landscape.
Privacy Act and APP
Compliant by design
We offer solutions that keep you compliant with the Australian Privacy Act and Privacy Principles. You stay focused on your message, we handle the rest.
Australian Data
Sovereignty
All your data is stored and processed in Australia. No overseas detours or compliance headaches. Just full alignment with national data retention and security expectations.
Certified for trust
and security
Your customer data deserves top-tier protection. Kudosity’s platform is certified to ISO 27001 and SOC 2 Type 2, meeting globally recognised standards for risk, security and operational integrity.
24/7 Expert
support
Whether you’re onboarding, registering Sender IDs or resolving message delivery issues, our local team is available 24/7 to ensure your messaging is never left to chance.
Trusted
Sub-Processors
We carefully assess vendors to ensure they comply with industry security and privacy standards and only work with third parties that meet our strict security requirements. Explore our sub-processors.
Our Security Certifications
ISO 27001
We are ISO 27001:2022 certified, meaning your data is protected by a robust information security management system aligned with global best practices.
View our ISO 27001 certificates →
SOC 2 Type II
Kudosity is independently audited against rigorous SOC 2 Type II standards, with strong controls in place to protect the security, availability, and confidentiality of your data.
Explore our SOC 2 reports →
CSA STAR Level 1
Our CSA STAR Level 1 status reinforces that we follow best-practice cloud security standards and reflects our commitment to transparency.
View our listing in the CSA STAR public registry →
With the ACMA mandating sender ID registration, unregistered Sender IDs will be:
Over-stamped with 'Unverified' warning.
Blocked from delivery by participating telcos.
Lead to conversion loss, trust issues, and compliance risk.
How Kudosity can help you:
Register and manage Sender IDs (fast and accurately).
Work with telecommunications providers and mobile network operators to keep your messages flowing.
Lead to conversion loss, trust issues, and compliance risk.
Prove your valid use case under ACMA guidelines.
Future proof your messaging against scam filters and disruption.
Real Compliance. No Friction.
Whether you’re sending SMS through our platform, API or an integration, we streamline the whole experience. You stay connected with customers, while keeping compliant with the rules.
Kudosity offers a futureproof, secure and compliant way to reach your customers. Whether you're a high-volume sender or an emerging business, our team is here to keep you connected with confidence.
No grey areas. No costly surprises. Just simple, smart delivery. Every time.
Stay ahead of 2025 Privacy and Compliance Changes
FAQs
What is the SMS Sender ID Register and why does it matter?
The SMS Sender ID Register is a new mandatory requirement introduced by the Australian Communications and Media Authority (ACMA) to combat SMS impersonation scams. From 15 December 2025, all businesses must register their sender IDs to avoid messages being marked as “Unverified” or blocked by Telcos. Kudosity helps you stay compliant with minimal disruption.
Does my business need to register a sender ID to continue sending SMS in Australia?
Yes. If your business sends SMS with alphanumeric sender IDs (e.g., "MyBrand"), you are required to register each ID. Failure to do so will result in messages being over-stamped or rejected. Kudosity provides full support for sender ID registration, validation, and compliance with ACMA’s standard.
How does Kudosity ensure compliance with Australian data and privacy laws?
Kudosity operates fully under Australian jurisdiction, with all data hosted onshore. We are compliant with the Australian Privacy Act 1988 and all Australian Privacy Principles (APPs). Additionally, our operations are certified to ISO 27001 and SOC 2 Type 2, ensuring strict data protection protocols.
Is Kudosity an Australian-owned company?
Absolutely. Kudosity is 100% Australian-owned and managed, with local teams providing end-to-end service, including compliance, delivery, support, and infrastructure. This gives us unmatched agility and understanding when helping businesses meet Australian messaging regulations.
What happens if my SMS sender ID isn’t registered by the ACMA deadline?
If your sender ID isn’t registered by 15 December 2025, telcos will over-stamp it with "Unverified", or block it altogether resulting in failed or misbranded message delivery. Kudosity ensures timely registration and telco approvals so your customer communications remain uninterrupted.
What is an alphanumeric Sender ID?
A Sender ID is the name that appears at the top of an SMS message instead of a phone number. It’s often used by businesses to show the brand name (e.g., "myGov", "Kudosity", or "CityClinic") so recipients know exactly who the message is from.
For example:
Instead of coming from “+61 412 345 678”, your message might show: From: CityClinic
Does Kudosity offer 24/7 support for compliance and delivery issues?
Yes. We provide round-the-clock support from our Australian-based customer success team. Whether you're onboarding, registering sender IDs, or managing urgent delivery issues, you’ll always speak to someone who understands the Australian compliance landscape.
Start preparing for Sender ID compliance now.
From December 2025, Sender ID registration will be required. ACMA’s final steps are still in progress, but Kudosity will keep you informed and help you be ready when registration opens.