Missed call text back is an automation that sends a text message to a caller within seconds of a missed call. It tells them who you are, that you will call back, and how to reply or leave details. For a tradie on the tools, a clinic with a busy front desk, or anyone who cannot answer every call, it turns a missed call into a conversation instead of a lost enquiry. What it is worth to you depends on your own numbers, and our missed-call calculator does the sum.
How does missed call text back work?
- A customer calls your business number and nobody answers.
- Your phone system or call provider registers the missed call and triggers the automation.
- The caller gets a text from your business within seconds.
- They reply by text with what they need, or follow a link to leave details.
- The reply lands where you already work: your phone, a shared inbox, or your job or booking tool.
- You follow up, and the call and the reply are logged against the customer.
The main technical question is whether your phone setup can tell software that a call was missed. Many cloud phone systems can. A plain mobile number usually needs calls forwarded on no answer to a number that can. It is the first thing to check, because it decides how simple the setup is.
What should a missed call text say?
Short, plain and clearly from you. A template to adapt:
- Say who you are. Your business name and contact details belong in every message.
- Do not pretend to be a person. Write in your voice, but make it clear a real person will follow up.
- Leave offers out. A discount turns a reply into a marketing message, with extra legal rules (below).
- Send from a number people can reply to. ACMA notes that alphanumeric message headers generally cannot receive replies, and replies are the point.
- One text, not a sequence. If they do not reply, call them back.
What is missed call text back worth?
The calculator uses one formula, shown on the page so it is never a black box:
It opens with starting values of 5 missed calls a week, 30% who would have booked, and a A$250 average job. That works out to 5 × 0.3 × 250 × 4.33, or about A$1,625 a month. Those are placeholders so the fields are not empty. They are not an industry average, and you should replace them with your own numbers. Nothing you type is stored or sent.
| Input | Where to find your number |
|---|---|
| Missed calls a week | Your phone log or call provider report, averaged over two to four weeks. |
| Share that would have booked | Your best guess. The share of answered calls that turn into bookings is a sensible upper limit. |
| Average job value | Your average booking, including GST, from your job or accounting software. |
Read the result for what it is. It estimates the work walking away, not what a text back will recover. Some callers will not reply, and some would have called back anyway. The honest test is after launch: count the replies and bookings that came from text backs for a month and compare. On our ongoing plans you get a plain monthly report on enquiries and response times, so you can judge it yourself.
What are the Spam Act rules for business SMS in Australia?
The Spam Act 2003 applies to commercial electronic messages. ACMA says that if a message offers, advertises or promotes a product or service, it must comply, even if that is only one part of the message. ACMA also says messages are generally not spam if they have no advertisements, such as appointment reminders or messages about a service you use. When a message is commercial, ACMA sets out three rules.
- Consent. You need express or inferred consent from each person. You cannot send a message to ask for consent, because that is itself marketing. Keep a record of who consented, when and how, because it is up to you to prove it.
- Identify yourself. Accurately identify your business, using its correct legal name or your name and ABN, and include correct contact details. That information must stay correct for at least 30 days after sending.
- Make it easy to unsubscribe. Clear instructions, honoured within 5 working days, no fee, no more than the usual cost of a text, working for at least 30 days, and no login or extra personal details required.
Two ACMA warnings matter for text back in particular. Automatically adding people to marketing lists after a one-off purchase or a simple enquiry may breach the consent rules. ACMA gives the example of email addresses, and the same caution applies to phone numbers. And using a provider does not move the risk: ACMA says your business is liable and you cannot outsource it.
So keep the text back a direct reply to the caller, with no offers, and include your business name and contact details every time. Never add missed callers to a promotions list. If you want to send offers later, get express consent first, for example with a tick box when they book. Adding "Reply STOP to opt out" costs nothing and covers you if a message is ever judged commercial.
Do you need to register an SMS sender ID?
Only if you send with a branded sender ID, meaning your business name appears at the top of the text instead of a phone number. Since 1 July 2026, texts sent with an unregistered sender ID are labelled 'Unverified' and grouped with other unverified messages, including scams. You register through your telco or message provider, and ACMA says there is no cut-off date to do it.
If you send from a phone number, ACMA says you do not need to do anything. For text back, a phone number is usually the better choice anyway, because people can reply to it.
What about privacy for clinics?
The OAIC says most small businesses with an annual turnover of A$3 million or less are not covered by the Privacy Act, but health service providers are covered regardless of turnover. For a clinic, the caller's number and anything they text back are handled under the Privacy Act. Keep automated messages free of clinical detail, limit who can see the inbox, and know where the messages are stored. Our clinics page covers how we scope this.
Is missed call text back right for your business?
It suits businesses where the phone rings while the work is being done: trades, clinics and allied health, gyms and studios, and hospitality venues taking bookings. It matters less if you already answer almost every call, or if most enquiries arrive through other channels.
At IMME it is part of the Lead Response System in software for small business, alongside after-hours answering, instant replies to web enquiries and review requests, connected to the job, booking or accounting tool you already use. It is scoped on a 20 minute call with a fixed written quote before any work starts.