Australia SMS Sender ID Registration
A new standard for trust in SMS
If you’re sending messages using a branded sender ID (your business name instead of a number), you’ll need to register it — or risk your messages being flagged or blocked.
This isn’t just compliance. It’s a shift toward a verified, trusted messaging ecosystem.
What’s changing?
Why this matters?
SMS works because of trust and immediacy.
With registration:
– Customers know it’s really you
– Networks prioritize verified senders
– Your brand becomes recognisable and credible instantly
Without it:
– Your messages look suspicious
– Engagement drops
– Deliverability becomes unpredictable
What happens if you don’t register?
– Messages labeled “Unverified”
– Lower open and reply rates
– Possible message blocking
– Lost revenue from SMS campaigns
What you need to register?
– Full legal business details (including complete ABN)
– Proof of sender ID ownership (domain, trademark, or brand alignment)
– An authorised contact to verify submission
How to prepare now?
– Audit all your sender IDs
– Ensure they match your business name or domain
– Gather ABN documentation
– Assign someone responsible internally
– Check your ABR contact details are up to date
Official Guide
For full details, refer to the ACMA Sender ID Register User Guide:
https://www.acma.gov.au/sms-sender-id-register-user-guide-businesses-and-organisations
How Guni helps?
– Register your Sender IDs correctly
– Validate brand ownership and documentation
– Ensure compliance without disrupting campaigns
– Maintain high delivery rates with verified messaging
Act now
From 1 July 2026, unregistered sender IDs will be labeled “Unverified” or blocked.
Don’t wait until your campaigns stop working.
Need help?
Contact Guni to handle your Sender ID registration end-to-end.