SMS broadcast is a method of sending one message to a large group of contacts simultaneously through an SMS gateway platform. Businesses upload a contact list, write a message, and the platform delivers it to thousands of recipients within seconds. It is commonly used for marketing promotions, appointment reminders, alerts, and customer notifications across Australia.

What Is SMS Broadcast?

SMS broadcast (also called bulk SMS or mass texting) lets a business send identical or personalised text messages to many recipients at once, rather than one at a time.

Unlike a personal text message sent from a phone, broadcast SMS runs through a dedicated platform connected to telecom networks. This allows messages to be sent at scale, tracked for delivery, and automated based on triggers like bookings or abandoned carts.

Why Businesses Use SMS Broadcast

Email open rates in Australia typically sit between 15-25%. SMS, by comparison, is read by most recipients within minutes of delivery. That speed and visibility make broadcast SMS one of the most reliable channels for time-sensitive communication.

Common use cases include:

• Flash sales and promotional offers
• Appointment and booking reminders
• Service outage or weather alerts
• Event invitations and RSVPs
• Order and delivery updates

How SMS Broadcast Actually Works

Step 1: Build or Import a Contact List

Businesses upload a list of mobile numbers, usually via CSV, or sync contacts directly from a CRM such as Zoho, HubSpot, or Salesforce.

Step 2: Write and Schedule the Message

Messages are limited to 160 characters per SMS segment. Platforms allow scheduling for specific dates and times, including time-zone targeting for national campaigns.

Step 3: Send Through an SMS Gateway

The platform routes the message through telecom carrier networks. A good gateway provider maintains direct carrier connections, which improves delivery speed and reduces the chance of messages being filtered as spam.

Step 4: Track Delivery and Engagement

After sending, businesses can see delivery status, failed numbers, opt-outs, and (where two-way SMS is enabled) reply rates — data that email simply cannot match in real time.

SMS Broadcast vs Email Marketing

The two channels work best together: email for storytelling and detail, SMS for urgency and confirmation.

Compliance Requirements in Australia

Businesses sending bulk SMS must comply with the Spam Act 2003, which requires:

• Express or inferred consent before sending marketing messages
• A clear sender identity
• A working opt-out (STOP) mechanism in every message

Non-compliance can result in significant fines from the ACMA, so any SMS broadcast platform used should have opt-out handling built in by default.

How to Choose an SMS Broadcast Provider

Look for a provider offering:

1. Direct carrier connections (not third-party resellers) for faster, more reliable delivery
2. Transparent, pay-as-you-go pricing with no lock-in contracts
3. CRM and Zapier integrations for automation
4. Local Australian support and data hosting
5. Delivery and engagement reporting

Australian providers such as Guni SMS offer pay-as-you-go SMS broadcast with direct carrier routing and CRM integrations, which is worth comparing if delivery speed and local support are priorities.

FAQs

Is SMS broadcast the same as bulk SMS?

Yes, the terms are used interchangeably to describe sending the same message to a large list of recipients at once.

How many people can I send an SMS broadcast to?

Most platforms have no upper limit — businesses commonly send to lists ranging from a few hundred to several hundred thousand contacts.

Do I need consent to send marketing SMS in Australia?

Yes. Under the Spam Act 2003, businesses must have express or inferred consent and provide an opt-out option in every marketing message.

How fast does an SMS broadcast get delivered?

Most messages are delivered within seconds to a few minutes, depending on network conditions and message volume.