AI receptionist vs voicemail: what happens to the call you miss

Voicemail is a recording device on the end of your line. Set a landline to divert when you don't pick up and BT's help page describes it as diverting the calls you do not manage to answer within 15 seconds. Mobiles do the same with conditional diverts, which EE describes as diverting calls when your phone is busy or there is no answer. The call rings out, then it goes somewhere.

Unless you've changed something, where it goes is voicemail. BT's own description of 1571 is honest enough. It answers when you are busy or away, and it lets callers leave a message. On Voicemail Essential, which is what BT calls the basic tier, a message can run to two minutes and new messages are kept for 60 days. BT's premium tier gives more of both, so check which one you're on.

That's the whole job. It records. Everything useful after the beep depends on the caller choosing to speak into it.

Put yourself at their end of it. There's water coming through a ceiling. They've three numbers off Google and yours was the first one they tried. You don't pick up, they get a beep, and now they're being asked to make a short speech to a stranger's machine with no idea when anybody will hear it.

Plenty of them ring off and try the next name. I'm not going to dress that up as a statistic, because I haven't got one I can show you the source for. It's what I've watched happen on my own phone, and nothing I've measured. The ones who do leave a message often leave a poor one. Ring us back, and a mobile number said once, fast, at the end.

What voicemail hands you is thin.

• No name, unless they say it.
• No number, unless they say it, or the caller ID came through and you fancy matching it up later.
• No idea what the job was, so you can't tell an emergency call-out from somebody pricing a job for next spring.
• No sense of which one mattered. Three missed calls at nine at night look identical on the screen.

A missed call alert tells you somebody rang. That's the whole of what it tells you.

It picks up. It answers in your business name, asks who's calling, takes a number, asks what they need, and reads the number back to be sure it has it right. Then it texts you the lot. You ring back when you're down off the ladder.

The plumbing is the same call divert you already have. The calls that used to drop into voicemail get pointed at the receptionist instead. Your number doesn't change, so nothing on the van or the website needs reprinting. You decide when it's on: overflow while you're already on a call, evenings, weekends, or round the clock. Setup takes about five days, it's included in the price, and most of it is unglamorous. Learning your services, your patch, your prices and what you want done with an emergency at eleven at night. There's more detail on the services page, and a trades version at AI receptionist for tradesmen.

The useful part is the text. Somebody who was about to ring the next name on the list gave their name and their number instead, and it's sitting on your phone when you finish the job you were on.

Voicemail is free, or as near as makes no odds, because it comes with the line. That's its strongest argument and it's a fair one.

EdgeAudit is £249 a month on Starter, £449 on Pro and £749 on Enterprise. Flat monthly, with no per-minute billing, so a busy month costs the same as a quiet one until you go past your plan's call cap. Past the cap it's 65p a call on Starter and 45p on Pro. Setup is free. It's a 30-day rolling contract, cancel any time, no minimum term and no annual lock-in unless you choose to pay yearly, which takes 15 percent off. I'm not VAT registered, because the business sits under the £90,000 turnover threshold, so there's no VAT on top and the price you see is the price you pay. If that ever changes you'll get it in writing first. Pro adds SMS follow-up, booking integration and weekly ROI reports. Enterprise adds multi-line, custom integrations and bi-weekly strategy calls. It's all on the pricing page.

Human answering services usually bill by the minute or by the call. I've only checked one closely, so take that as the pattern rather than the rule. Face For Business publishes starting prices on its pricing page. At the time of writing, August 2026, that page lists a Taster plan from £49 p/m, Message Only from £99 p/m and Inclusive Minutes from £115 p/m. Those are starting prices on metered plans, so the floor is well under a flat monthly fee and a heavy month can go past it. Their page doesn't say whether those figures are before VAT, so check. Prices change, so open the page yourself before you compare anything.

The only sum that counts is your own. Take what an average job is worth to you, take the number of calls a month you're genuinely losing, and see whether the arithmetic works. If it doesn't, don't buy it. There's a rough missed call calculator if you want to put figures on it.

If you take three calls a week and you answer all three, you don't need this. You'd be paying £249 a month to fix a problem you haven't got.

Voicemail is also fine when your callers already know you. Regulars, suppliers, the merchant ringing about a delivery. They'll try you again later. They aren't shopping around.

Same again if somebody sits in your office and picks up, or if your work comes from repeat customers and word of mouth rather than strangers finding you on a phone.

The case for an AI receptionist rests on one thing. It's whether strangers ring you, and whether you lose them when you can't pick up. If they don't, keep your money. Emergency trades are the clearest case the other way, which is why there's a separate page for plumbers.

It isn't a person, and I'm not going to pretend otherwise.

• It won't handle a proper complaint. Somebody angry about a job that went wrong wants you on the phone, not a receptionist taking details.
• It won't price a non-standard job. It can take what's needed and flag it as urgent. The quote is still yours to give.
• It can mishear. Local names and townlands give it trouble, in my experience. It reads numbers back for exactly that reason, and it's still not perfect.
• It depends on the network. If your line is down or your signal is gone, nothing forwards anywhere, and no answering setup fixes that. Ask me how your particular divert is configured before you assume voicemail is still catching anything behind it.
• It won't win you the work. It gets you a name and a number. If that text sits unread until Thursday, you're back where you started.

One of my clients is a joinery business. Before they started with me they reckoned they were missing somewhere around ten out-of-hours calls a month. That's the number they came to me with.

What I can't tell you is what happened after that, because it hasn't been measured yet. When it has been, and if they're happy for it to go public, it'll appear on the site with the working shown. I'm not going to invent a percentage and stick a stock photo beside it. The site says elsewhere that I won't fabricate case studies. That goes for the blog too.

Ten calls a month outside working hours is worth sitting with, mind. Work out what an average job is worth to you, then ask how many of ten strangers ringing at seven in the evening you'd have liked to speak to.

Do this for a fortnight before you spend anything. Every time you see a missed call, write down whether you rang it back, whether it turned into work, and what time it came in. After two weeks you'll know whether you've got a voicemail problem or not.

If the list is short, close the tab and get on with your day. If it isn't, I'm in Derry and I answer my own phone. Have a look at the pricing, or get in touch and tell me what you're missing.