From July 1, 2026, Australian businesses that have not registered their SMS sender ID will have their branded text messages labelled 'Unverified' and grouped with potential scam texts. Registration through telcos is free but must happen before the deadline.
Imagine your appointment reminder arriving on a customer's phone, stripped of your brand name and filed next to a message claiming to be from Australia Post about a missed delivery. That is what July 1 looks like if you have not registered.
From July 1, 2026, text messages sent with your business name that are not registered with the ACMA SMS Sender ID Register will be labelled "Unverified" on the recipient's phone. Your brand name will disappear. The message will be grouped alongside potential scam texts.
The Australian Communications and Media Authority introduced the register as part of its anti-scam framework. The intent is to help consumers distinguish legitimate business communications from fraudulent ones. The unintended consequence is that every business that has not registered will look like a scammer to their own customers.
The date unregistered business SMS sender IDs will start showing as 'Unverified' on Australian phones
The change applies to branded sender IDs only. These are the text messages that show your business name at the top instead of a phone number. If your appointment reminders, delivery notifications, marketing campaigns or two-factor authentication messages use a branded sender ID, they are affected.
Registration is free. Businesses register through their telco or SMS messaging provider, who then submit the details to the national register. The process opened on November 30, 2025, which means businesses have had six months to act. Many have not.
The impact on marketing is direct. SMS remains one of the highest-converting channels in Australian marketing, with open rates consistently above 90%. A message labelled "Unverified" will see those rates collapse. Customers who have learned to ignore scam texts will apply the same reflex to legitimate business communications that carry the same warning label.
For businesses that rely on SMS for transactional communications (appointment confirmations, shipping updates, booking reminders) the impact extends beyond marketing into operations. A customer who ignores an appointment reminder because it looked like spam is a customer who does not show up.
Why it matters
This is not a marketing trend piece. It is a compliance deadline with immediate commercial consequences. Every Australian business that sends branded SMS and has not registered will see a measurable decline in message engagement from July 1.
What to do about it
The deadline is less than eight weeks away. Registration is free and the process is straightforward. There is no reason to wait and every reason to act now.