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What your business voicemail should say — and when to let an AI answer instead

If you run a small business on your own or with a couple of people, you know the moment: the phone rings while you are under a sink, with a client in the chair, or driving between two jobs. You cannot pick up. What happens next is decided by one thing — the few seconds the caller hears instead of you.

For most small businesses that is still a voicemail greeting recorded years ago, or the carrier's default robot voice reading out the number. This post is a practical guide to making that greeting work, and to recognising when a recording is no longer the right tool at all.

What actually happens when a call goes to voicemail

A voicemail box costs almost nothing and asks nothing of you. But it moves the work somewhere else:

  • onto the caller, who has to decide whether to leave a message or simply ring the next business on the list;
  • onto your evening, when you listen to the messages and start returning calls — often to people who are now busy themselves;
  • onto the clock, because a question that could have been answered in thirty seconds now takes two calls and half a day.

None of that means voicemail is wrong. For a lot of lines it is exactly right. It just means the greeting has to do as much of the job as a recording can.

Five rules for a business voicemail greeting

  1. Say who they reached. Business name first, so the caller knows they dialled the right number. "Hi, this is Martin Plumbing" beats "You have reached 06 …".
  2. Say why nobody is answering — and, if it helps, your hours. "We're on a job" or "We're open Tuesday to Saturday, 9 to 6" tells the caller this is normal, not a closed business.
  3. Ask for exactly what you need to call back. Name, number and the reason for the call. Callers who are told what to say leave better messages.
  4. Say when you will call back — and then do it. "Today before 6 pm" is a promise; "as soon as possible" is not.
  5. Keep it short. The caller is waiting to speak, not to listen. Fifteen seconds is plenty.

Scripts you can adapt

A trade on the road:

"Hello, you've reached Martin Plumbing. We can't take your call right now — we're on a job. Leave your name, your number and what you need, and we'll call you back today before 6 pm."

A solo professional on a mobile:

"Hi, it's Sophie, mobile hairdressing. I'm with a client — leave your name and number and I'll call you back within the hour."

After hours, with opening times:

"Thanks for calling Green Leaf Bakery. We're closed right now — we open tomorrow at 7. For orders, leave your name, your number and what you'd like, and we'll call you back in the morning."

If you use a phone menu ("press 1 for…"): keep the options few, put the most requested one first, and always offer a way to leave a message. A menu sorts calls; it does not answer anyone's question, so every extra option is one more chance for the caller to hang up.

Recording it properly

  • Record in a quiet room, not in the van with the engine running.
  • Speak more slowly than feels natural, and smile — it is audible.
  • Listen to it once from another phone before you switch it on.
  • Change it for holidays, and change it back when you return. A greeting that announces last August's closure tells callers nobody is listening.

Your half of the deal: returning calls

A good greeting only works if the callback happens. A simple routine helps:

  • check messages at fixed times (for example, at lunch and at the end of the day) instead of "when I get a minute";
  • call back in the order the calls came in, and keep a short list of who still needs an answer;
  • if you promised "today", call today, even if only to say when you can come.

Signs that a recording is no longer enough

Voicemail stops being the right tool when the calls you miss are the calls that make you money. Some signs:

  • Callers don't leave messages. You see missed calls from unknown numbers and never hear from them again.
  • Most calls are bookings or orders. The caller wants a time slot or a price, and a recording cannot give either.
  • A lot of calls come in after hours, when you will not be calling back until tomorrow.
  • Callers speak other languages, and the message they leave is hard to act on.
  • You spend your evenings on callbacks that could have been settled during the first call.

If two or three of these sound familiar, it is worth looking at something that answers instead of recording.

What an AI answering machine does differently

An AI answering machine is a recording that talks back: when you don't pick up, an AI agent answers the call, holds the conversation and hands you the result. The important questions are what it is allowed to say, what it does with the call, and what control you keep.

As one example, here is how it works in Weyvox, where calls are handled by Cindy, the AI receptionist:

  • It tells the caller it is an AI. At the start of every call Cindy says she is the AI agent answering calls for the business and that the call is transcribed for a call note. This is a product rule, not a setting.
  • It answers from your information only. She answers from your business profile, quotes prices only from your price list, and offers only times when you are actually available. If something is not on your price list, she says she will check rather than invent a figure.
  • It finishes the job on the call. She recognises a returning customer by their number, takes the order or booking before saying goodbye, and texts a confirmation once the caller agrees.
  • You get a note, not a recording. After the call, a short note — who called, what was found out, what was agreed — appears in the chat with that number. No call audio is kept.
  • You decide when it picks up. Your phone can ring for 10, 20, 30 or 40 seconds first, so you can still answer yourself; declining the call hands it over at once; or it can pick up immediately. It answers on servers, so it works when your phone is off.
  • You can step in. A call in progress shows up in the app as a mini call card: listen in, take the conversation over, or end it.

It also helps to be clear about the limits. An AI agent is not a person: a complaint or an unusual request still needs you. In Weyvox, when the plan's credits and the balance are both used up, Cindy does not answer and the call rings for you as a normal call. The full comparison of answering machine, voicemail and AI — including what to watch out for — is in AI answering machine for business: when voicemail is not enough.

Telling callers it's an AI

Whatever tool you use, callers should know when they are talking to a machine. In the EU, Article 50 of the AI Act sets transparency rules for AI systems that interact with people. Beyond the law, it is simply good manners: a caller who knows they are talking to an AI agent asks clearer questions and is not surprised later. (This is a general note, not legal advice.)

What it costs compared with voicemail

Voicemail is the cheapest option, and for a quiet line it may stay the best one. An AI agent costs per call, so the useful question is how many of your missed calls would have turned into work.

To give a concrete reference point from Weyvox: prices are in credits, where 1 credit = €0.01 excluding VAT. A minute of Cindy on a call is about 23 credits plus the operator line for the country, and the cost simulator on the pricing page counts an average call at about 50 credits — an estimate, since a real call is billed by its minutes. The Start plan is €19 a month excluding VAT and includes 2,500 credits, so around 40 answered calls a month come to roughly 2,000 credits, plus the number's monthly fee. Unit prices are listed on the pricing page.

If you are unsure whether missed calls are costing you anything, it is worth working it through with your own numbers first — this guide walks through the calculation.

A quick checklist

  • Does your greeting say your business name in the first sentence?
  • Does it tell callers what to leave and when you will call back?
  • Is it under 15–20 seconds, and recorded somewhere quiet?
  • Do you have fixed times for returning calls?
  • Are callers hanging up without leaving a message, or calling mostly to book or order? If yes, a recording may no longer be enough.

Fix the greeting first — it costs nothing and takes ten minutes. Then decide, with your own call log in front of you, whether the calls you miss are worth having something answer them.


This article was drafted with the help of AI and approved for publication by the Weyvox team.

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