SMS gateway providers in Australia

What is an SMS gateway?

An SMS gateway is the provider's hosted sending service. It accepts a message from your web app, your software or your email, routes it to the recipient's mobile network, and returns a delivery receipt. The unit an SMS gateway charges by is the message part, not the message.

A hardware SMS gateway is a SIM card in a modem or a phone, and it sends from one ordinary mobile number at that SIM's plan rate. The gateways on this page are hosted services instead. The provider runs the software, connects to the mobile networks directly or through carriers, and you install nothing on your own server. Mobile Message describes its gateway as the bridge between your software and Australia's mobile networks.

In Australia the gateway, the SMS provider and the SMS platform are usually the same company, and marketing platforms add campaign tools on top.

The next section follows one message through the gateway step by step.

How an SMS gateway sends a message

One message moves through the gateway in five steps.

1. Your system submits the message. Your web app or software sends the message text and the recipient's mobile number to the gateway.
2. The gateway checks the sender and the length. It applies your sender ID or your sending number, counts the characters, and splits a long message into linked parts.
3. The gateway hands the message to the recipient's mobile network. Australia's mobile networks are run by Telstra, Optus and TPG Telecom, which runs the Vodafone network.
4. The network delivers the message to the handset. The recipient sees your sender ID or your number as the sender.
5. The network returns a delivery receipt. That receipt is how the gateway reports your message as delivered or failed.

The first step depends on the connection method your system uses, and the next section covers all four.

Four ways to connect to a gateway

The web app runs in your browser. You log in, upload your list, type the message and press send. It suits a business that sends promotions or reminders without a developer.

The API connection is for your own software. Your application makes an HTTP request that carries the recipient's number and the message text, and the gateway sends it. It suits a team with a developer whose system generates its own messages, such as appointment reminders or login codes. 31 of the 32 gateways on this page publish an SMS API.

SMPP holds a persistent connection open between your system and the gateway. It suits high-volume senders and resellers. 12 of the 32 gateways on this page publish SMPP.

Email to SMS is the no-code option. You address an email to the recipient's mobile number at the provider's domain, and the gateway sends it as a text message. It suits staff who work from an inbox rather than a system. 24 of the 32 gateways on this page publish it.

Every method lands on the same bill, because the gateway charges by the message part whichever way you connect.

What an SMS gateway costs

An SMS gateway charges by the message part. A single SMS holds 160 characters in the standard GSM-7 character set, or 70 when the message contains an emoji or any character outside that set. A longer message travels as linked parts of 153 characters (GSM-7) or 67 (UCS-2), and each part is charged as one message.

The published range at 15,000 messages a month runs from 3.00c (Mobile Message) to 12.33c (Bulk SMS Australia), and the median across the 14 gateways that publish an Australian-dollar rate is 5.66c.

The table on this page prints each gateway's rate at that volume, and you can filter it by connection method.

Rates fall as monthly volume rises. Some providers price by monthly volume, some by the size of a prepaid credit bundle, and ClickSend by the size of a single top-up. Ask for the rate at your own monthly volume before you judge any published figure.

Two costs sit outside the per-part rate. A dedicated virtual mobile number carries a monthly fee at most providers, and Mobile Message includes the first dedicated number free after the first credit purchase. Most Australian rates are published excluding GST, so check whether a quoted price includes it before you compare.

This site's cheapest bulk SMS comparison ranks every provider on price at four monthly volumes.

The rate is only part of the decision, and the next section covers the number you send from and whether customers can reply.

Replies, numbers and sender IDs

A sender ID is your business name of 2 to 11 characters, shown in place of a number. A sender ID cannot receive replies, so two-way SMS needs a number instead, either a dedicated virtual mobile number or a shared number. 30 of the 32 gateways on this page publish two-way SMS.

Since 1 July 2026 a text sent with a sender ID that is not registered on the SMS Sender ID Register shows "Unverified" in place of the name, and the message is still delivered. You register through each telco or message provider you send with. ACMA publishes an approved list of telcos and message providers, and 28 of the 32 gateways on this page are on that list, 16 as certified telcos.

A registered name still needs a gateway that stays up, and the next section covers what providers promise about that.

Reliability and uptime

Uptime measures how often the gateway is available. Delivery speed measures how fast a message reaches the handset. Login codes and appointment reminders depend on that speed more than promotions do.

Some providers put a document behind their uptime figure.

Mobile Message commits to 99.9% gateway availability in any calendar month, with an account credit as the sole remedy. Kudosity commits to 99.9% monthly platform uptime in a published Service Level Agreement. Sinch Engage, formerly MessageMedia, publishes a 99.95% uptime commitment in its Australian SLA. ClickSend publishes a 99.95% uptime SLA figure beside a public status page and a published outage procedure.

Others publish a figure with no SLA document, credit schedule or remedy behind it. Cellcast states "100% uptime SLA", Notifyre states 99.99%, Guni SMS states 99.9%, and MessageWorks states 99.95%. An uptime figure with no SLA document is a claim, not a commitment.

Beyond uptime, the law places obligations on what you send, and the next section sets them out.

What Australian regulation should I consider?

The Spam Act 2003 applies to every message you send through a gateway. It requires consent, express or inferred, before you send. It requires clear identification of the sender with accurate contact details, and a functional unsubscribe. An unsubscribe must be honoured within 5 working days and must keep working for at least 30 days after the message is sent.

The obligations sit with the business that sends the message, not with the gateway. ACMA enforces the Spam Act.

The Sender ID Register covered above is the other ACMA scheme that applies to your sending.

One connection method raises questions of its own, and the next section explains SMPP.

What is an SMPP gateway?

An SMPP gateway is a gateway you reach over SMPP, the Short Message Peer-to-Peer protocol. The protocol holds a persistent connection open between the sender's system and the gateway, and that open line suits larger senders and resellers. SMPP needs a developer or a messaging platform that speaks the protocol, where the SMS API needs only an HTTP request.

Examples on this page include ClickSend, SMSGlobal and Esendex.

With the methods and the rules clear, the final section turns the comparison into a decision.

How to choose an SMS gateway

Work through five decisions before you commit.

1. Decide the connection method. A business without a developer starts with the web app or email to SMS, and a business whose software sends its own messages needs the API or SMPP.
2. Estimate your monthly volume. The table on this page gives each provider's rate at 15,000 messages a month, so ask for the same quote at the volume you actually send.
3. Decide whether you need replies or a branded name. Two-way SMS needs a dedicated or shared number, and a branded sender ID needs registration through the provider you send with.
4. Check where support is based. 19 of the 32 gateways on this page are headquartered in Australia.
5. Read the published record, then test. Check what each provider publishes about uptime and delivery reports before you sign up, and test with free credits where they are offered. Mobile Message gives 50 free SMS credits on signup, SMS Broadcast gives 25 free credits plus a month on the platform with no credit card, and touchSMS gives 10 free credits.