Since 1 July 2026, any branded business text sent from a sender ID not on the ACMA's SMS Sender ID Register is labelled Unverified on Australian phones and grouped with possible scams.
- The register is run by the ACMA and became mandatory on 1 July 2026. It exists to stop scammers impersonating real brands.
- Unregistered branded texts are marked Unverified and land in a shared thread with other unverified messages.
- That quietly kills reply rates on booking confirmations, on-my-way texts and missed-call text-backs.
- Registration is free. You apply through your telco or SMS provider, and your ABN contact details in the ABR must be current.
- If your job software or automations send texts under your business name, the sender ID behind them needs registering too.
Keep asking about it in
Quick answer: if your business texts say Unverified, it is because they are sent under a branded sender ID that is not on the ACMA’s SMS Sender ID Register. The register went live as mandatory on 1 July 2026: from that date, branded SMS from unregistered sender IDs is labelled Unverified on Australian phones and grouped into a single thread with other unverified messages, scam-adjacent company included. For a tradie whose booking confirmations, on-my-way texts and missed-call text-backs go out under the business name, that label quietly cuts reply rates on messages that used to just work. The fix is a free registration through your telco or SMS provider. Here is what changed and how to sort it.
What the ACMA register is, and why the label exists
The SMS Sender ID Register is an anti-scam measure. Scammers have spent years sending texts that appear to come from banks, toll operators and delivery companies, sliding into the same message thread as the real brand. The register closes that door: a business registers the alphanumeric sender IDs it texts under, telcos check messages against the register, and impersonation attempts get blocked or flagged.
The ACMA warned in May 2026 that the flip side lands on legitimate businesses: from 1 July, any branded SMS from a sender ID that is not registered shows as Unverified, and gets grouped with other unverified messages. The customer still receives the text. They just receive it wearing the exact label the ACMA has spent a year teaching Australians to distrust.
Why this hits tradies harder than most
A trade business rarely sends marketing blasts. What it sends is operational: the booking confirmation after a call, the on-my-way text with an arrival window, the review ask after the job, the automatic text-back when a call rings out. Those messages work because the customer trusts them instantly and replies. Put Unverified on top and some percentage of customers hesitate, ignore, or delete, and the whole point of missed-call text-back is the first thirty seconds.
The part that catches people out: most tradies never chose a sender ID. The job management platform or SMS tool did it for them when it was set up to send as the business name. If ServiceM8 sends your texts, or an automation platform does, the branded sender ID behind those messages is yours to register even though you never typed it. ServiceM8 publishes its own help article on Australian SMS sender ID registration, and other SMS providers have equivalent processes.
The fix, step by step
- Find out what your texts send as. Send yourself a test from your job software. If it arrives from a name rather than a mobile number, you have a branded sender ID, and it needs registering. If it arrives from a plain number, the label rules do not apply, at the cost of looking like any other number.
- Check your ABR details. Registration requires an ABN, and the ACMA requires the authorised contact or service-of-notice email on your Australian Business Register record to be current. Fix that first or the application stalls.
- Apply through your provider. You register via the telco or SMS provider that carries your messages, not directly with the ACMA. Registration is free. Some platforms, ServiceM8 among them, can lodge it on your behalf, but the sender ID is registered to your business.
- Register early and re-test. The ACMA’s advice is to apply well before you need it, because applications take time to process. Once approved, send yourself the same test and confirm the label is gone.
We do this as a standard part of every SMS automation we set up, because an automation that texts customers under an Unverified label is doing half its job. If your missed-call texts, review asks or booking confirmations were built before July 2026 and nobody has checked them since, that ten-minute test message is worth sending today. And if you would rather the whole thing was handled, registration included, that is what our Lead System and ServiceM8 automation setups are for.