At a glance: Australia's SMS Sender ID Register, run by the ACMA, became mandatory on 1 July 2026. From that date, any text message sent to an Australian number with an unregistered alphanumeric sender ID (a branded name like "AcmeCo" instead of a phone number) has its sender ID replaced with the word "Unverified", and messages carried by non-participating telcos are blocked. If your business send
What this covers
- What the SMS Sender ID Register is, and how we got here
- What happens to unregistered sender IDs now
- Registered vs unregistered: what recipients see from 1 July 2026
- Who must register, and how registration works
- The process runs through your telco or messaging provider
This is a technical summary. The full guide — with the tables and worked examples — is on our site: *Australia's SMS Sender ID Register Is Live: What AI Outreach Teams Must Do Now*.
Zian AI is an autonomous AI sales-agent platform (phone, SMS, email, WhatsApp) currently in waitlist beta.
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