Missed-call text-back.
And the rules it keeps.
The phone rings while you are under a house, up a ladder or with a client, and by the time you look, the caller has gone. If they did not leave a message, you may never know who it was or what they wanted. Missed-call text-back sends a text to someone whose call to your business went unanswered, so the conversation stays open until a person calls back. This guide walks through one exchange from start to finish, what the owner signs off before it goes live, and what the Spam Act 2003 says, read from the Act itself.
Every point about the law here is cited to the Spam Act 2003 and the OAIC, read on 4 October 2026. This is general information, not legal advice. The Australian Communications and Media Authority (ACMA) publishes its own spam guidance, the next thing to read, and a lawyer is the right call for anything that hangs on the detail. Updated 4 October 2026. 10-minute read. How we write these guides.
The short answer.
Missed-call text-back sends an automatic text to someone whose call to your business went unanswered, so they can reply with what they need while you are busy. Before it goes live, the owner should approve the exact wording, the hours it runs, who handles replies and the opt-out. Under Australia's Spam Act, a text that names your business and sticks to facts about the call is treated differently from one that offers or promotes anything[1].
How does missed-call text-back work?
Three parts do the work. Something has to notice that a call went unanswered. Depending on your phone setup, that is the phone system itself, a call-forwarding service in front of your number, or an app on the business mobile. Providers differ, so ask yours which applies before you buy anything.
Then a text the owner approved goes to the caller's number. The caller replies, and the reply lands somewhere a person actually watches: the business mobile, a shared inbox or a job system. Last, a person calls back. The text does not replace the callback. It holds the conversation open until the callback happens.
- It cannot text a caller whose number is withheld, because there is nothing to send to.
- It cannot answer the caller's question. It can only collect it for a person.
- It cannot fix a reply nobody reads. If replies land in an inbox nobody checks, the missed call has simply moved.
The same gap exists on websites, where a form says thank you and nothing reaches the owner. Why website enquiries never arrive traces where those enquiries die.
What does one look like?
An illustration, not a client story: a Brisbane plumber, one missed call, one morning.
10.40am: the call rings out
A homeowner in Kedron rings about a leaking hot water system. The plumber is on a job and the call rings out. No voicemail is left.
Shortly after: the text goes
The caller receives the text the owner approved, word for word: "Hi, this is [business name]. Sorry we missed your call. Reply with your suburb and what you need, and we will call you back today. Reply STOP to opt out."
10.47am: the caller replies
"Hot water system leaking in the laundry, Kedron." The reply lands on the business mobile and in the shared inbox the office checks.
11.15am: a person calls back
Between jobs, the plumber rings back already knowing the suburb and the problem. The call is about when, not what.
What did not happen
No offer, no link, no second text. Its only job was to get the caller's details to a person, and the wording was settled before the first call ever came in.
Notice the word today. A text that promises a callback today commits the business to one, so an after-hours version should say next business day instead. That is the kind of detail the owner settles before launch, not after the first complaint.
What does the owner sign off?
Most explanations of this tool stop at how it works. The part that decides whether it helps or annoys people is the sign-off sheet. Before launch, the owner approves each of these in writing.
- The exact words of the text, for business hours and for after hours, read aloud once to check it sounds like the business.
- The number it comes from, and whether a reply to that number reaches a person.
- The hours it runs, and what it does on public holidays.
- Who reads replies, and how quickly someone calls back.
- Which numbers it skips: staff, suppliers, and customers the owner would rather ring personally.
- How often one number can be texted, so a caller who rings three times gets one text.
- The opt-out line, and who checks that a STOP is honoured.
- What it never says: no prices, no offers, no promise the business has not already made.
- Where the numbers and replies are stored, who can see them, and when they are deleted.
This matches how we run automation work generally. As our automation page sets out, customer-facing messages are written from the business's approved information and reviewed by the owner before launch, and anything going out in the owner's name is drafted for their approval by default.
Does the Spam Act apply?
A text message is an electronic message under the Spam Act 2003, because the Act's definition covers messages sent to a telephone account[1]. The Act's main rules apply to commercial electronic messages, and its own simplified outline puts them in three lines: unsolicited commercial messages must not be sent, they must include information about who authorised them, and they must contain a functional unsubscribe facility[1].
Whether a message is commercial is a test of purpose. The Act looks at the content of the message, the way it is presented, and what can be found through the links, phone numbers and contact details in it. It then asks whether one of the message's purposes is to offer to supply goods or services, or to advertise or promote them[1].
The Spam Act does not mention missed calls at all. It sets tests, and the answer turns on what your text actually says and links to. [1]
Consent under the Act is either express, or consent that can reasonably be inferred from the conduct and the business and other relationships of the person concerned[1]. Someone who rang you has done something, and it is tempting to read that as permission for anything. The Act does not say so. It does not say the opposite either. What it does say is that a business relying on consent bears the evidential burden of showing it[1].
When is a text marketing?
The Act has a category for factual messages, and a missed-call text written the right way can sit inside it.
The Act calls it a designated commercial electronic message. It is a message of no more than factual information, with or without directly related comment, plus details such as the name, logo and contact details of whoever authorised it, which would not have been commercial without those details[1]. The consent rule and the unsubscribe rule do not apply to designated messages. The identification rule carries no such exception, so the text must still name your business and say how to reach you[1].
| The text says | What the Act looks at | What to do |
|---|---|---|
| Sorry we missed your call, this is [business name]. Reply with what you need and we will call you back. | Facts about the call, plus who sent it: the shape the factual-message category describes[1] | Keep it this plain, and name the business every time[1] |
| The same, plus: book this week for 10% off. | An offer to supply services is one of the purposes that makes a message commercial[1] | Leave it out, unless you have consent and include an unsubscribe facility[1] |
| The same, plus a link to a page of specials. | The Act counts what a link leads to, not only the words in the text[1] | Link to nothing, or only to a contact page with no promotion on it |
| A text a month later about a winter special. | A new message whose purpose is promotion[1] | Treat it as marketing, and confirm you have consent before it goes[1] |
So the safer pattern is a first reply that would not need consent at all, and express consent, recorded with who, when and how, for anything promotional afterwards. Even a purely factual text can carry a short opt-out line. It costs a few words, it lets a wrong-number caller close the loop, and it covers you if a later edit ever tips the wording into promotion.
Under the Spam Act, when someone withdraws consent by sending an unsubscribe message, the withdrawal takes effect at the end of five business days, counted from the day they sent it. [1]
This is general information, not legal advice. If your text-back does anything beyond acknowledging the call, read ACMA's spam guidance and speak to a lawyer before it goes live.
What about the caller's privacy?
The OAIC lists a phone number among its examples of personal information[2]. Whether the Privacy Act applies to your business depends on more than size. The OAIC describes a small business as one with an annual turnover of $3 million or less, and lists businesses the Act covers regardless of turnover, including health service providers[3]. A clinic or allied health practice thinking about missed-call text-back should check that list before anything else.
Covered or not, the practical questions are the same, and they belong on the sign-off sheet: where the numbers and replies are stored, which staff can read them, and when they are deleted. A reply about a medical problem or a home address is more than a phone number.
What should you check before launch?
Eight tests, run from a mobile that is not the business's own. Each one takes a minute or two.
Let a call ring out
Ring the business and let it ring out. Check the text arrives, from the number you expect, with the wording that was approved.
Ring from a withheld number
Nothing should be sent and nothing should break. Those callers still depend on voicemail, so check the greeting is current.
Reply to the text
Confirm the reply lands where a person will see it during working hours, and note how long it took to get there.
Reply STOP
Ring again later from the same mobile. No second text should arrive, and someone should know where the opt-out list lives.
Ring twice in ten minutes
One text, not two. Repeat callers are often the most urgent, and a second identical text reads like a machine stuck in a loop.
Ring after hours
The after-hours wording should go, and it should not promise a callback today.
Read it against the table
No offer, no promotional link, business named, a way to contact you. Compare it with the four versions above.
Write down who owns it
Who reads replies, who calls back, and who may change the wording. An edit to the text is a new sign-off, not a quiet tweak.
Does Pixelate offer it?
Not as a live service yet. Missed-call text-back is a pilot enquiry with us rather than a live service, and our SMS service is not live either, as our automation page says plainly. We wrote this guide because the questions are the same whoever builds it: what the text says, who approves it, and what happens to the reply.
If missed calls are where your work goes missing, tell us how calls reach you now. One of us reads it, and you get a straight answer about what fits and what does not.
Questions and answers.
Is missed-call text-back legal in Australia?
The Spam Act does not mention missed calls, so there is no blanket yes or no[1]. It asks whether a message is commercial, judged by its content, presentation and links, and sets consent, identification and unsubscribe rules for commercial messages[1]. A plain text about the call that names your business sits differently from one carrying an offer. This is general information, not legal advice.
Do I need consent to text someone who just called?
It depends on what the text says. The consent rule does not apply to a designated commercial electronic message, which is one of no more than factual information plus sender details[1]. Consent can also be reasonably inferred from conduct and relationships[1], but the Act does not say a missed call is enough, and a business relying on consent bears the evidential burden of showing it[1]. Keep the first text factual.
Can I put a special offer in the text?
You can, but it changes the message. An offer to supply services is one of the purposes that makes a message commercial under the Act[1], and a commercial message needs consent, must identify who authorised it and must carry an unsubscribe facility[1]. A plain acknowledgement and a quick callback keep the first text simple. Save offers for people who have said yes to hearing them.
What happens when the caller's number is hidden?
Nothing is sent, because there is no number to send to. Test this before launch by ringing from a withheld number and checking the system skips the call cleanly. Those callers are the reason voicemail still matters, so keep the greeting current and check messages as often as you check text replies.
Should a factual text still include a STOP option?
The Act's unsubscribe rule does not apply to designated messages[1], so a purely factual text may not strictly need one. We would include it anyway. It is a few words, it lets a wrong-number caller close the loop, and if the wording is ever edited towards promotion, an unsubscribe facility becomes a requirement[1]. Once someone withdraws consent, the Act gives it effect at the end of five business days[1].
Sources.
- Spam Act 2003, Compilation No. 10 (10 March 2016): ss 3, 5, 6, 16, 17, 18, Schedule 1 clause 2, Schedule 2 clauses 2 and 6, Federal Register of Legislation. Read 4 October 2026.
- What is personal information?, Office of the Australian Information Commissioner. Read 4 October 2026.
- Small business, Office of the Australian Information Commissioner. Read 4 October 2026.
Find where your calls go missing.
Missed-call text-back is a pilot enquiry with us, not a live service yet. Our automation page shows what is live today, and the contact form reaches one of us directly, with no bot triaging it.