SMS Short Code

An SMS short code is a 5 to 6-digit phone number used to send and receive SMS or MMS messages. These codes are designed for high-volume, high-speed messaging and are most commonly used for:

• SMS marketing campaigns
• Two-factor authentication (2FA)
• SMS alerts 
• Customer service messages
• Emergency SMS notifications  

Users can interact with short codes by texting keywords (e.g., “HELP” or “STOP”) for immediate automated SMS responses.

What an SMS Short Code Provides

• High Throughput: Send thousands of messages per second, ideal for peak-volume periods like flash sales, vote tallies, or emergency broadcasts.
• Brand Recognition: Short codes are easier to remember than full-length numbers and can help build brand trust over time.
• SMS Keyword Engagement:  Enable users to respond with intuitive, memorable commands like “JOIN” or “INFO,” enhancing automation and interactivity.

Why SMS Short Codes Matter

Time-Critical Messaging 
When seconds matter, like sending OTPs, emergency notifications, or limited-time offers — short codes deliver at speed.

Engagement and Compliance 
Short codes typically require carrier vetting and opt-in processes, helping maintain compliance with regulations while boosting user engagement.

Broad Use Cases 
From political SMS marketing campaigns to bank alerts, retail promotions, and public health messages, short codes are trusted for important communications.

SMS Short Codes in Australia

Short Codes Are the Gold Standard 
In Australia, short codes are often the preferred channel for enterprise SMS, particularly for banks, government services, and marketing.

Carrier Approved 
Australian short codes are provisioned via carriers and managed through a strict compliance process, providing reliability and legitimacy. 
Short codes are commonly used for two-way messaging, allowing recipients to text back and engage.