The Australian Communications and Media Authority (ACMA) mandate requires businesses sending SMS to Australian numbers to register their alphanumeric sender IDs. Use the tables below to find the specific guides tailored to your role, business type, and stage in the registration process.
General Guides & Preparation
This section is for all users, decision-makers, and platform administrators. These articles cover the foundational rules, prerequisites, and general steps that apply to almost everyone.
| Article Title & Link | When to Use It |
|---|---|
| Australia | Changes to alphanumeric sender ID (formerly alpha tag) registration and usage | Start here for a high-level overview of the ACMA mandate, timeline, and formatting rules. |
| Australia | Setting up ACMA Assist before your alphanumeric Sender ID is registered | Use this before attempting to register in the platform. Explains how your Authorized Business Representative (ABR) first logs into the government portal. |
| Australia | How Alphanumeric Sender ID registration works with Sinch MessageMedia | Read this to understand the end-to-end workflow between the Sinch MessageMedia platform and the ACMA Assist portal. |
| Australia | Alphanumeric sender ID registration - Choosing an entity type | Review right before you begin submission to ensure you declare the correct legal structure (e.g., Direct vs. Entity Associate). |
| Australia | Alphanumeric sender ID Registration | Your general, step-by-step guide to submitting a sender ID within the Sinch MessageMedia portal. |
| Australia | What does “Business Administrator” mean in ACMA Assist? | Use if your ABR needs to delegate the day-to-day management and approval of Sender IDs to another staff member. |
| Australia | FAQs: Alphanumeric sender ID (formerly alpha tags) registration | Check here if you have specific edge-case questions, run into roadblocks, or need clarification on rules. |
Direct Sinch MessageMedia Customers
This section is for businesses with an active Australian Business Number (ABN) that are sending SMS directly under their own brand name.
| Article Title & Link | When to Use It |
|---|---|
| Australia | Alphanumeric sender ID registration - Direct customer flow | Follow this specific workflow when you are submitting sender IDs for your own registered business. |
| Australia | Completing Identity Verification for Sender ID Registration | Use when the person submitting the registration needs to securely verify their identity as part of the approval process. |
Businesses Without an ABN
This section is for international or overseas entities that do not hold an active Australian Business Number (ABN) but still need to send SMS to Australia.
| Article Title & Link | When to Use It |
|---|---|
| Australia | Alphanumeric Sender ID Registration for Businesses Without an ABN - Direct Customer | Use if you are an overseas direct customer needing interim solutions to continue sending messages to Australia. |
| Australia | Registering a Sender ID on Behalf of a Non-ABN Customer (Entity Associate & EMSP Partners) | Use if you are an agency or partner registering a sender ID for an international client without an ABN. |
Messaging Service Providers & Partners
This section is for agencies, IT integrators, Entity Associates (EAs), and Equivalent Messaging Service Providers (EMSPs) who manage accounts and send SMS on behalf of multiple client businesses.
| Article Title & Link | When to Use It |
|---|---|
| Australia | Alphanumeric sender ID registration - Entity Associates (EA) flow | Use when registering a sender ID on behalf of one of your clients using their ABN. |
| Australia | Alphanumeric Sender ID Registration - EMSP Partners Single Flow | Step-by-step instructions for EMSP partners who need to process a one-off sender ID registration for a client. |
| Australia | Alphanumeric Sender ID Registration - EMSP Partner (Bulk) Flow | Use when managing large volumes of clients and needing to register multiple sender IDs via a bulk upload process. |
| Australia | Bulk Sender ID Registration - Error Reference Guide | Keep handy to troubleshoot and resolve common data errors or formatting issues that occur during a bulk upload. |