- ACMA
- SMS Scam
- Sender ID Register
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- Telco News
ACMA's new SMS Sender ID Register starts 1 July 2026, requiring Australian businesses to register branded sender names or risk an "Unverified" label.
ACMA Sender ID Register Goes Live 1 July 2026
The Australian Communications and Media Authority will switch on its SMS Sender ID Register on 1 July 2026, marking one of the most significant changes to how branded text messages reach Australian phones. According to industry reporting on the new regime, any business that wants its organisation name (rather than a phone number) to appear in the sender field of an SMS must register that alphanumeric ID through its telecommunications provider before the deadline. Messages from unregistered senders will instead carry an "Unverified" label and may be grouped alongside suspected scam traffic.
How the Register Will Change Inbox Behaviour
For Australians who receive SMS from banks, utilities, government agencies and parcel carriers, the change is designed to reduce one of the most exploited channels in the local scam economy: brand impersonation. Reporting on the framework notes that registered sender IDs must be clearly linked to a verified business entity, typically through ABN details, domain names and trademark records. ACMA has flagged restrictions on terms that could mislead recipients or impersonate trusted entities, meaning a scammer cannot simply request "AusPost" or "ATO" as a sender ID after the cut-off date.
The agency has also warned that unregistered messages may be filtered or blocked by networks and handsets, and that customers are likely to ignore or delete anything tagged "Unverified". For Reverseau contributors, the new label provides a clearer signal: a verified sender name carries a higher threshold of accountability, while an unverified one warrants the same scrutiny as an unknown phone number.
Where the Register Sits in the Broader Anti-Scam Push
The Sender ID Register is the latest in a sequence of measures aimed at the SMS scam pipeline. It follows the Reducing Scam Calls and Scam SMs Industry Code that already requires telcos to identify, trace and block messages with high-risk indicators, and complements the 7726 reporting service used by carriers to gather scam intelligence. Community reports collected on Reverseau continue to show high volumes of impersonation traffic targeting Australia Post, Linkt toll notices, myGov, the ATO and major banks. A central register of legitimate sender IDs gives carriers and downstream filters a reliable reference list to compare against.
Industry reporting indicates that registration is handled through SMS providers rather than directly with ACMA, and that verification can take time if there are mismatches between the requested sender ID and the underlying business records. Late registrations risk missing the 1 July 2026 deadline, after which legitimate messages from unregistered businesses will start appearing under the "Unverified" header alongside suspect traffic. Branded SMS will also continue to operate within Spam Act 2003 (Cth) obligations covering consent, sender identification and a working unsubscribe mechanism.
What Australians Should Do When the Register Starts
From July, the appearance of a branded sender name will carry more weight than it does today, but recipients still need to treat the message body, links and requested actions with the same care as any unknown call. Consider the following:
- Do check whether the sender label reads as a verified brand name or "Unverified" before acting on the message.
- Do open the relevant app or type the organisation's URL directly rather than tapping links inside the SMS.
- Do contact the organisation through a phone number listed on its official website if a message claims urgent action is required.
- Don't assume a verified sender name guarantees the content is legitimate. Compromised business systems can still send messages with genuine sender IDs.
- Don't reply with personal details, one-time passwords or banking information, regardless of how the message is labelled.
How to Report Suspect SMS and Check a Number
Australians who receive a suspicious text can forward it free of charge to 0429 999 888 (which spells 0429 9YY TTT for SMS scam reporting) and to the standard 7726 service operated by carriers, both of which feed intelligence into network-level filters. Scam losses and details should also be reported to Scamwatch at scamwatch.gov.au, while cybercrime incidents involving financial loss or identity theft can be lodged with ReportCyber at cyber.gov.au. ACMA accepts complaints about telco compliance directly through acma.gov.au.
For numbers that follow up an SMS with a phone call, Reverseau aggregates community reports on individual Australian numbers, allowing contributors to add what was claimed during the call, the script used and any payment requests made. Cross-checking a calling number against existing reports before responding gives recipients an additional data point alongside the new sender ID label, particularly during the early months of the register when the line between verified and unverified senders will reshape how Australians read their inboxes.