Optus review
Optus is one of Australia's three major mobile network operators, wholly owned by Singapore Telecommunications, itself majority owned by Singapore's Temasek Holdings. Optus Enterprise sells a business SMS and messaging API product line under names including SMS Messaging and API, Enterprise SMS Messaging and Optus API Connect, described as a CPaaS platform connecting through one of several APIs with optional Sender ID registration for Australian sending. No per-message Australian dollar price for this product line could be confirmed on the pages read for this review; enterprise SMS and API pricing is handled through Optus's own sales team rather than published on a public page.
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Not yet scored
One of 44 brands reviewed. Not in the priced comparison: publishes no Australian rate.
- One of Australia's own network operators, alongside Telstra, already reviewed in this comparison
- A dedicated CPaaS product, Optus API Connect, sits alongside its more general enterprise SMS messaging line
- Optional Sender ID registration for Australian sending is offered directly through the platform
- No confirmed per-message Australian dollar price for its enterprise SMS or API Connect products; pricing runs through a sales conversation
- Optus names several related SMS products without one page clearly distinguishing them
- Built for enterprise buyers rather than a small business wanting a self-serve rate card
Where Optus stands
Optus is one of Australia's three major mobile network operators, wholly owned by Singapore Telecommunications, itself majority owned by Singapore's Temasek Holdings. Optus Enterprise sells a business SMS and messaging API product line under names including SMS Messaging and API, Enterprise SMS Messaging and Optus API Connect, described as a CPaaS platform connecting through one of several APIs with optional Sender ID registration for Australian sending. No per-message Australian dollar price for this product line could be confirmed on the pages read for this review; enterprise SMS and API pricing is handled through Optus's own sales team rather than published on a public page.
An Australian-registered company with its head office in Australia and support based here. How we classify this.
Sending under your own brand name also depends on the ACMA SMS Sender ID Register, separate from this site's own scoring. What the register requires.
What Optus publishes instead of a rate
Optus publishes no Australian per-message rate that maps onto a monthly volume, so this page carries no rate table and no cost calculator. Putting a figure here would mean quoting a price Optus does not publish. What it does publish is below.
| Feature | Published |
|---|---|
| API | not published |
| Email to SMS | not published |
| Two way | not published |
| SMPP | not published |
| Dedicated number | not published |
| Shared number | not published |
| Sender ID | not published |
"Not published" means the provider states nothing either way on its Australian pages. It is not the same as "No", and this page does not turn one into the other.
One of Australia's own network operators, not a self-serve rate card
Optus is one of Australia's three major mobile network operators, alongside Telstra and Vodafone. It is wholly owned by Singapore Telecommunications, itself majority owned by Singapore's Temasek Holdings, and in 2026 Singtel said it was open to selling a minority stake in Optus, though this would not change majority control. Optus Enterprise sells a business SMS and messaging API line under several related names, including SMS Messaging and API, Enterprise SMS Messaging and Optus API Connect, its CPaaS platform, connecting through one of several APIs with optional Sender ID registration for Australian sending.
No confirmed per-message Australian dollar price for this product line appears on the pages read for this review. Its enterprise SMS and API pricing runs through its own sales team rather than a published rate card, the same commercial pattern as the equivalent Telstra product already reviewed on this site, and no rate is carried in the tables above for that reason.
Compare Optus with another provider
| Measure | Optus | Cellcast |
|---|---|---|
| Overall out of 10 | not published | 9.0 |
| Rate at 1K | no published rate | 3.70c |
| Rate at 15K | no published rate | 3.10c |
| Rate at 125K | no published rate | 2.83c |
| Rate at 250K | no published rate | 2.83c |
| Cost at 15,000 a month | not published | $465 |
| Carrier routes | not published | not published |
| Uptime | not published | "100% uptime SLA" and a "100% delivery rate guarantee"; no SLA document, credit schedule or remedy is published behind either |
| Dedicated number | not published | Yes |
| Shared number | not published | Yes |
| Alpha sender ID | not published | Yes |
| Email to SMS | not published | Yes |
| SMPP | not published | not published |
| Two way | not published | Yes |
| Support | not published | 8am to 8pm AEST staffed, with 24/7 emergency tickets; phone, email and SMS |
| Head office | Sydney, New South Wales | South Melbourne, Victoria |
| Public reviews | not published | 4.2/5 from 6 reviews on Trustpilot |