AI receptionist or voicemail? Test it on after-hours calls before you pay

The three options in plain English

Voicemail (done properly): the caller hears your greeting and leaves a message. Usually part of your phone plan (check with your carrier). Takes about 10 minutes to set up. Best for low call volume, regular customers and people who'd rather talk to you.

Missed-call text-back (the middle option): you miss the call, and they get a text from your number saying you'll call back, plus a question or two. Sometimes built into your phone system, carrier or job app; otherwise it's a paid add-on (check with your carrier or app). Best for callers who won't leave voicemail but will reply to a text.

AI receptionist: a computer voice answers, asks questions, and sends you a summary. Some can book, or put urgent calls through to you. Usually a monthly subscription, sometimes with a setup fee. We don't list prices, so check the vendor's official site. Setup takes longer: you have to teach it your services, areas, hours and emergency rules, then test it. Best for lots of calls you can't answer, or busy after-hours lines.

Pros and cons (honest)

Voicemail. Pros: cheap or free, and everyone knows how it works. The caller still hears your voice, and nothing can make up an answer or promise a time on your behalf. Cons: lots of people don't leave a message, messages pile up, and you get no info until you call back, by which time they may have rung someone else. Make it better with a short greeting that asks for name, suburb and job and says when you'll call back. There's a prompt in Missed calls.

Missed-call text-back. Pros: the caller hears back quickly, even when you're up a ladder. People who won't talk to a robot will often reply to a text. You write the message once, so it can't wander off-script. Cons: it only works for mobiles. An automatic text with no follow-up feels worse than nothing, so you still have to call back. The text should say who it's from and stick to their enquiry, with no promos tacked on (see the privacy and spam section below).

AI receptionist. Pros: it picks up every call and asks the same questions every time (job, suburb, urgency, contact). You get a written summary instead of a voicemail. Some can filter spam or sales calls, text a booking link, or put real emergencies through to you, depending on the product. Cons: some callers hang up on AI, and older and regular customers may like it least. It can mishear a phone number or suburb, answer a question it shouldn't, or sound like it's promising a time or price. It costs money every month and setup takes real effort. You're also collecting and storing customer voices and details through another company. Set up badly, it's worse than voicemail.

What customers actually say (the sceptics included)

Ask around and you'll hear both sides. On one Australian forum, several people said flatly they'd hang up on a bot, and one said it made a business look like it couldn't be bothered. Others said: get a decent voicemail and an online booking form sorted first. But one caller said an electrician's AI told them straight away it was an AI, took the details, and the sparky rang back within minutes. They nearly hung up, but stayed because it didn't pretend to be a person.

The lesson: if you try AI, say up front that it's AI, keep it short, and make sure a real person calls back fast. And test it on your own customers before you commit.

Telling callers it's AI (do this every time)

Never let an AI pretend to be a person. Open with a short, honest line, give an easy way out (a message or a call back in the morning), and mention recording if the system records.

Sample AI greeting (callers hear this first). Some systems can't switch to normal voicemail, so this version offers a short message instead:

Copy this prompt and fill in the [square brackets]:

Hi, you've reached [Business]. I'm [Name]'s automated AI assistant. [Name]'s on the tools or closed right now. I can take a few details and [Name] will call you back [tomorrow morning]. This call is recorded so we get your details right. If you'd rather not talk to an AI, just say so and I'll take a short message. If it's an emergency with gas, sparks, smoke or flooding near power, hang up and call 111 [NZ] / 000 [AU].

Tip: Tell the AI it must not give prices, promise times, or give repair or safety advice. You confirm all of that yourself. Sample missed-call text-back: "Hi, it's [Name] from [Business]. Sorry I missed your call, I'm on a job. Reply with your suburb and what the job is and I'll ring you back [by 5pm / tomorrow morning]. Emergency? Call 111 [NZ] / 000 [AU]."

Emergencies: AI and texts can only take a message

Put the 111 (NZ) / 000 (AU) line in your voicemail greeting, your text-back and any AI greeting.

Privacy, recording and disclosure (NZ & AU): check the current rules

This is general information, not legal advice. Rules change and depend on your situation, so check the current rules with the official sources below or ask an adviser. See also Safe AI habits, Is ChatGPT safe for business data? and our privacy page.

New Zealand. The Privacy Commissioner says the Privacy Act applies to everyone using AI tools in New Zealand. How that applies to an AI answering your phone and recording calls: check the current rules with the Office of the Privacy Commissioner (opens in a new tab).

Texts (NZ). Commercial texts have rules on consent, identifying the sender and unsubscribing. Whether an automatic reply to someone's own enquiry counts: check the current rules with the Department of Internal Affairs (opens in a new tab). Either way, include your business name and number and don't add promos.

Australia. The privacy regulator's guidance on AI products talks about telling people when they're dealing with AI. Whether the Privacy Act covers your business, and the call-recording rules where you and your callers are: check the current rules with the OAIC (opens in a new tab) (and its small business page (opens in a new tab)).

Texts (AU). For the spam rules on texts: check the current rules with the ACMA (opens in a new tab).

Callers can be anywhere, so the simple habit is to tell everyone at the start that it's AI and the call is recorded.

• Say it's AI and that the call is recorded, in the first sentence.
• Only collect what you need: first name, number, suburb, job, urgency.
• Ask the vendor where recordings and transcripts are stored, how long they're kept, whether you can delete them, and whether they're used to train AI. Get the answers in writing.
• Put a line in your privacy policy about using an AI phone assistant and recording calls.
• Keep the login secure: two-step login, and don't share it.
• Delete old recordings and transcripts on a schedule.

The 2-week after-hours test

Don't decide from a demo. Test it on your real after-hours calls for two weeks and count what happens. It's not a science experiment, since weeks differ with weather, school holidays and so on, but it beats guessing.

1. Set your after-hours window. For example weekday evenings and nights, plus the weekend. Write it at the top of the tally sheet. Only count calls in that window.
2. Week 1: your normal setup, done properly. Record a good voicemail greeting (prompt in Missed calls). If you can, send your own callback text first thing next morning. Count everything.
3. Week 2: try ONE change, after hours only. Either turn on a missed-call text-back (if your phone, carrier or job app has it), or try an AI receptionist on a free trial or month-to-month plan, in after-hours mode only, with the honest greeting above. Don't change anything else that week, and keep business-hours calls as they are.
4. Each morning (2 minutes): check your call log, plus the voicemail list or AI summaries, and fill in that night's row.
5. Day 15: add up both weeks and use the decision guide below.

What to measure

Use the same definitions both weeks so they compare fairly.

• After-hours calls: every call in the window, from your phone's call log. Count obvious spam and sales calls separately.
• Missed calls: calls nobody (and nothing) talked to: no voicemail left, or the AI didn't pick up.
• Calls answered: week 1, a voicemail was left. Week 2, the AI took the caller's name, number and job, or the caller replied to the text-back.
• Hang-ups: the caller hung up without leaving any details, on the greeting or partway through the AI questions.
• Callbacks: how many you rang or texted back the next working day, and how many you actually reached.
• Jobs booked: after-hours callers who booked a quote visit or a job within a week of calling.
• Time spent (minutes): each morning, time spent on after-hours calls: voicemail or summaries, ringing back, fixing mistakes. In week 2, also count setup and training time.
• AI or text mistakes: wrong number, wrong suburb, wrong job, or it said something you didn't want said (price, time, advice).
• Comments: anything callers said about the robot or the text.

Tally sheet (print one per week)

Print this page with your browser's print button, or copy the sheet below into a notes app or a Google Sheet.

Copy this prompt and fill in the [square brackets]:

AFTER-HOURS TEST — WEEK ___
Setup this week: [ ] Voicemail  [ ] Text-back  [ ] AI receptionist
After-hours window: ____________________

Night | Calls | Spam | Missed | Answered | Hang-ups | Called back | Reached | Jobs booked | Minutes spent | Mistakes | Notes
Mon   |       |      |        |          |          |             |         |             |               |          |
Tue   |       |      |        |          |          |             |         |             |               |          |
Wed   |       |      |        |          |          |             |         |             |               |          |
Thu   |       |      |        |          |          |             |         |             |               |          |
Fri   |       |      |        |          |          |             |         |             |               |          |
Sat   |       |      |        |          |          |             |         |             |               |          |
Sun   |       |      |        |          |          |             |         |             |               |          |
TOTAL |       |      |        |          |          |             |         |             |               |          |

Setup/training time this week (minutes): ______
Anything a caller said about it: ___________________________________

Tip: Use a pencil and keep the sheet in the ute. Tick each call once and only once.

How to decide

Lay the two TOTAL rows side by side and go down this list.

1. Only a handful of after-hours calls? Good voicemail plus a quick callback text is probably all you need. Don't pay for more.
2. Did jobs booked go up in week 2? That's the number that matters most. More "answered" calls but no more jobs means it's not paying its way yet.
3. Did hang-ups go up? If more people hung up on the AI than used to hang up on voicemail, your customers don't like it. Try the text-back instead, or shorten the greeting and try again.
4. Did your morning time go down? Include setup time. If you spent longer fixing AI mistakes than you used to spend on voicemail, it isn't saving you anything.
5. Any serious mistakes? If it promised a time or price, gave advice, or got numbers wrong more than once, stop and fix the setup before you go on.
6. What did callers say? One grumble isn't a verdict, but regular customers complaining is a warning sign.

Tip: Simple verdicts: keep voicemail (and improve it) if calls are few or customers didn't like the change. Go with text-back if missed calls dropped with no rise in hang-ups. Keep the AI receptionist (still after hours only) if jobs booked went up, hang-ups were no worse, mornings got quicker and there were no serious mistakes, then run it another month before trying it in business hours. Not sure? Run the test for 2 more weeks.

If you already use a job app

ServiceM8 (official help, checked 19 Oct 2026): the ServiceM8 Phone Agent (opens in a new tab) is an add-on for ServiceM8 Phone, available on the Connect Plus and Unlimited plans for ServiceM8 Phone. ServiceM8 says customers who were on ServiceM8 Phone before 19 September 2025 get the After Hours mode without changing plans. It has Business Hours, After Hours and Voicemail modes, logs each call with a summary, transcript and recording, and can text callers a booking-form link or transfer urgent calls. ServiceM8 itself recommends starting with one mode (for example After Hours) and testing it thoroughly. Plans change, so check with ServiceM8 what your account includes before you pay for a separate service. This isn't a recommendation: run the same 2-week test. Step-by-step: Set up the ServiceM8 AI Phone Agent.

Other job apps and phone services: check your own app or carrier for a missed-call text or AI answering option before buying something new. Comparing apps? See Compare job management apps and our ServiceM8 notes.

Questions to ask any AI receptionist company before you sign

Not sure you want to do this yourself? See DIY vs done-for-you or get AI set up for you.

1. Can it say up front that it's an AI? Can I write that line myself?
2. Can callers choose a message or a human instead?
3. Can I switch it on for after hours only?
4. Can it put urgent calls through to my mobile? What counts as urgent, and who decides?
5. Can I stop it giving prices, times or advice?
6. Where are recordings and transcripts stored, for how long, can I delete them, and are they used for training?
7. Is there a free trial or month-to-month option, and how do I cancel? (Get it in writing.)
8. Can I keep my existing number, so my van signage stays right?
9. Can I see a call log so I can count hang-ups for my test?

⚠️ Red flags: guarantees of more jobs, made-up "customers love it" claims, long lock-in contracts, pressure to decide on the call, or refusing to let the AI say it's an AI.

Is an AI receptionist worth it for a small trade business?

It depends on how many calls you miss and whether your customers put up with it. If you only miss a few after-hours calls a week, good voicemail and a quick text are usually enough. Run the 2-week test and decide from jobs booked, not from a demo.

Do customers hang up on AI receptionists?

Some do. On a public Australian forum, plenty of people said they'd hang up on a bot, while others were fine when it said up front that it was an AI and a person rang back quickly. Count hang-ups in your own test.

What's a missed-call text-back?

When you can't answer, the caller automatically gets a text from your number saying you'll ring back and asking what the job is. It's a middle option between voicemail and AI. Check whether your phone, carrier or job app has it.

Do I have to tell callers they're talking to an AI?

Do it every time: it stops callers feeling tricked. Whether the law requires it in your situation: check the current rules with the NZ Privacy Commissioner (opens in a new tab) or the OAIC (opens in a new tab) in Australia. This is general information, not legal advice.

Can an AI receptionist record my calls legally?

Recording rules differ between NZ and the Australian states, so check the current rules where you and your callers are. The safe habit is to say "this call is recorded" at the start, collect only what you need, and know where the vendor keeps recordings.

Should an AI receptionist handle emergencies?

No. It can take a message or put the call through to you, but it can't judge a fault. Tell callers with gas smells, sparking, smoke or flooding near power to call 111 (NZ) or 000 (AU) or the network emergency line.