Automatic reminders
Not for the timing. A reminder is a rule: when an invoice goes overdue or an appointment gets close, send this message. Your accounting or booking software may already have that setting. A date or a status starts the reminder: Xero sends before and after the due date, then weekly until paid, while Cliniko lets a practice set the period and time. AI is an optional extra that writes the message. Check your settings first, before you pay anyone.
- TriggerA date or status starts the reminder, for example an invoice goes overdue.
- Fixed messageA template with the client's name and details filled in.
- ReplyYou decide who sees a reply with a problem, and set that up.
- AI wordingAn optional step where an AI writes a fresh note for each client.
A date or status triggers the reminder, a template fills in the details, an AI can optionally write fresh wording instead, and you decide who handles any reply with a problem.
A reminder is a rule
Xero says its reminders are sent automatically before and after the due date, and weekly until paid. Cliniko, a practice management tool, lets a practice set an SMS reminder as a template with a reminder period and time, up to 9 days before the appointment, with placeholders that fill in each patient's details.
Sources: Xero, read 11 Oct 2026; Cliniko, read 11 Oct 2026
Both are the same idea: when this happens, send that. If a job can be written that way, a rule does it. The wording is written once, ahead of time, and the software fills in the names and details. Check for a setting you already have before you buy anything.
A made-up example
Example, made upThis is a made-up example. A bookkeeper has a client whose invoice went overdue on Friday. In the first version her accounting software sends the same polite reminder on the due date and again each week until it is paid. In the second version an AI writes a fresh note for that client each time. Both versions send a reminder, and only the second one writes new wording.
The same reminder, two ways
A reminder that goes out on a set date follows a set path. Here is one overdue invoice handled both ways.
| One overdue invoice | A fixed rule | AI-written wording |
|---|---|---|
| What starts it | The invoice goes overdue. | The same thing: the invoice goes overdue. |
| What the client gets | The same polite message every time, with their name and the amount filled in. | A note written fresh for that client. |
| What can go wrong | The wording is a bit stiff. | The wording may suit one client and not another. |
| Who reads it before it goes | You, once, when you write the template. | Only if you set up a check first. |
Xero's invoicing page says that sending automatic reminders and tracking sent, opened, paid and overdue status in the aged receivables report lets owners spend up to 50% less time chasing payments, citing its own survey of 172 small business customers in Australia in May 2024. That is Xero's own figure about its own customers and it covers reminders and tracking together, not a promise for your business.
Source: Xero, read 11 Oct 2026
A check you can run yourself
- Find the reminder setting in the software you already use, such as accounting, bookings or practice software.
- Look at what starts it: a date, a status, or a person pressing send.
- Read the wording it sends. Does it use the right name and the right details?
- Send one to yourself first, and read it on your phone.
- Check what happens when someone replies with a problem, and who sees that reply.
- If the fixed message does the job, you are done. AI adds nothing to this job.
Cliniko says an SMS reminder typically costs 1 credit, a message over 160 characters costs an additional credit, and SMS credits are bought separately. So check what each text costs before you turn on a rule.
Source: Cliniko, read 11 Oct 2026
Where the idea stops being true
Anthropic's own advice to people building with AI is to find the simplest solution possible and only add complexity when needed, which it says might mean not building agentic systems at all.
Source: Anthropic, read 11 Oct 2026
A reminder is not a relationship. Let the software send the nudge, and keep the reply for yourself. AI wording or a person may earn its place when the message needs judgement about one customer, and the customer who writes back with a problem should always reach a person.
The ACMA says that if you plan to send marketing messages or emails you must first have consent from the person who will receive them, and every commercial message must include an unsubscribe option. Whether a particular reminder counts as one is a question for the ACMA or your adviser, and this page does not say.
Source: Australian Communications and Media Authority, read 11 Oct 2026
Questions worth asking
- Does my software already have a reminder setting that I have not turned on?
- What starts the reminder, and can I change when it goes?
- What happens when someone replies with a problem, and who sees it?
- What does each message cost, and what happens when the text runs long?
- If a seller says AI is needed, what does AI do here that a template does not?
Sources and checking
- Xero Australia: online invoicing, read 11 Oct 2026
- Cliniko: Set up SMS appointment reminders, read 11 Oct 2026
- Australian Communications and Media Authority: Avoid sending spam, read 11 Oct 2026
- Anthropic: Building effective agents, read 11 Oct 2026
Last checked against the sources: 11 Oct 2026. Where a source is a seller, what it says is the seller’s statement, not a measured result. Tax is shown exactly as the source gives it.
Published by Three Fixes. An AI drafted this page from the sources above, and a separate review pass checked it against them on 11 Oct 2026.
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