You Might Not Need an AI Receptionist
Two prices, both published by the vendor, both checked on 2 September 2026. Call Catchers sells UK missed-call text-back at £35 a month. IONOS sells a UK AI receptionist at £39 a month excluding VAT, which is £46.80 with it, covering 30 calls and then £0.49 per call.
About forty pounds buys either one. That kills the argument almost every page on this subject rests on, ours included until we went and looked. Text-back is not the cheap option any more, so price cannot be the reason you pick it.
Two things decide it instead. Whether your text message is legally direct marketing, which turns on a single clause in it. And whether a text can do the job the caller actually rang about.
Key takeaways
- At UK entry level the two cost roughly the same. £35 buys text-back plus SMS, £39 excluding VAT buys AI answering for 30 calls.
- An administrative text-back needs no consent. PECR Regulation 22 only applies to messages sent "for the purposes of direct marketing".
- One promotional clause changes that. The ICO's position is that a service message with any direct-marketing element "will count as direct marketing", whatever its main purpose.
- The soft opt-in cannot rescue a promotional text-back, because Regulation 22(3)(c) requires the opt-out at the moment the number was collected, and a missed call gives you no such moment.
- Since 5 February 2026 a Regulation 22 breach carries the higher maximum penalty, £17.5m or 4% of worldwide turnover. The old £500,000 ceiling is history.
What is missed-call text-back?
Missed-call text-back is an automation that watches your phone line and, when a call goes unanswered, immediately sends the caller an SMS. That is the whole product. Nothing answers the phone, nothing speaks to anyone, and no conversation happens on the call itself.
The better implementations then run a short scripted exchange over SMS, asking two or three questions and passing the answers to the business owner. The simplest ones send one message and stop.
It is genuinely useful, and it is a real alternative rather than a strawman. A business that misses calls because the owner is up a ladder, and whose enquiries are simple enough to handle in writing later, may not need anything to answer the phone at all.
Is text-back actually cheaper in the UK?
Not at the entry level, no. Here is what UK-facing vendors publish, alongside what published AI answering costs. Every figure below was seen on 2 September 2026.
| Product | Published price | What you get |
|---|---|---|
| Call Catchers, text-back | £35/month | Text-back, two-way SMS, review replies, mobile app, free setup |
| Call2SMS, text-back | £37 / £67 / £97 per month | 36 / 135 / 225 recovered-lead conversations a month |
| 1nexus, text-back | £77/month, from £197 | Near-identical feature list to Call Catchers |
| IONOS, AI receptionist | £39 / £69 / £99 per month excl VAT | 30 calls then £0.49/call; 100 calls then £0.39; unlimited |
| RingCentral AI Receptionist | $49 standalone, $39 as a RingEX add-on | 100 minutes, then $0.50/min, billed in 30-second increments |
Two honesty notes on that table. RingCentral publishes no GBP price for this product at all, so the "£32 a month" figure circulating in third-party reviews is not RingCentral's own number and we will not print it as one. And Call2SMS is the most honest structure of the three text-back vendors, because it prices conversations, which is the thing that actually costs money.
Why do four UK SMS providers quote the same price?
Because they are the same company. Esendex, TextAnywhere, Text Marketer and Voodoo SMS all publish an identical price card: 500 messages from £54 a month, 2,500 from £143, 10,000 from £468. All four are Commify brands. Voodoo's own site states it plainly in the footer: "Commify UK Limited trading as Voodoo registered in England and Wales under number 04217280".
A small business dutifully getting four quotes is getting one quote four times.
The relevant part for text-back is the floor. £54 buys a bundle of 500 messages, and a business missing 30 calls a month needs 30 of them. As an effective unit cost that is £1.80 a message, against Twilio's published rate below. Volume pricing is real, but a text-back user never reaches the volume.
Also worth knowing: Textlocal, for years the default UK small-business SMS provider, no longer exists as a self-serve product. Its pricing page now redirects to Webex Interact. Any comparison article quoting Textlocal's old per-credit rates is quoting a dead product.
What does the DIY version cost?
Less than everything above, if you can wire it up. Twilio publishes UK rates in US dollars, and these are the vendor's own figures rather than our conversion:
| Item | Twilio published UK rate |
|---|---|
| Send an SMS to a UK mobile | $0.056 per message |
| Receive an SMS | $0.0075 per message |
| Inbound voice minute | $0.0100 per minute |
| UK mobile number rental | $2.50 per month |
So one missed call plus one text is about six and a half cents of usage on top of the number rental. Twilio's page notes prices may change and that additional carrier fees may apply.
One genuine UK advantage: Twilio's UK guidelines list two-way SMS as supported on domestic long codes, with pre-registration required only for protected sender IDs. The UK has no equivalent of the US 10DLC registration regime, so most US write-ups on this topic quote setup fees a UK buyer will never pay.
The catch is the sender. Twilio's alphanumeric sender ID is free but can only send. Recipients cannot reply to it, so any text-back that expects an answer needs a real number. Twilio recommends a local one and says two-way messaging from a foreign number is not guaranteed.
Do you need consent to text someone who just rang you?
Only if the text is direct marketing. This is the hinge of the whole question and almost every vendor page gets it wrong in one direction or the other.
PECR Regulation 22(2) prohibits transmitting "unsolicited communications for the purposes of direct marketing by means of electronic mail" without prior consent. Two definitions in Regulation 2(1) do the work. "Electronic mail" expressly "includes messages sent using a short message service", so SMS is squarely inside the rule. And "direct marketing" now has its own PECR definition, inserted on 20 August 2025 by the Data (Use and Access) Act 2025: "the communication (by whatever means) of advertising or marketing material which is directed to particular individuals".
Read the two together and the answer is content-dependent. If your text-back is not advertising or marketing material, Regulation 22 does not apply to it and there is nothing to consent to. If it is, you need consent, and the caller ringing you is not consent.
The B2B exemption will not apply to you
Regulation 22 protects individual subscribers, and the ICO counts sole traders and ordinary partnerships as individuals rather than corporate subscribers. Most numbers ringing a plumbing or trades line belong to exactly those people, so "we are B2B, PECR does not apply" is wrong for the majority of UK small business.
What turns a text-back into a marketing message?
Anything promotional in it, however small a part of the message it is. The ICO calls the harmless kind a service message, and its own list of examples reads like a specification for a well-built text-back: messages that "remind people how to contact you in case of a problem", "check their contact details are correct", "confirm or remind them about appointments", or "update them on your terms or conditions".
Then comes the sentence to pin above the desk of whoever writes your SMS templates: "If your service message has elements that are direct marketing, even if that is not the main purpose of your message, then it will count as direct marketing. However, if your service message contains general branding or logos, this doesn't count as direct marketing."
The ICO's worked example is a gym ringing a customer about a failed payment. Administrative, so not direct marketing. Then, on the same call, the gym "also outlines its personal training services", and the ICO's conclusion is that it "now falls within the definition of direct marketing". Nothing about the main purpose saved it.
Two lines, one legal difference
| Text-back message | Status |
|---|---|
| "Sorry we missed your call. Reply here with what you need and we'll come straight back to you." | Administrative. No promotional element |
| "Sorry we missed your call. Reply here, and book this week for 10% off your first service." | Direct marketing. Consent required |
The ICO is explicit on the offer point: "If you want to send a message that actively promotes or encourages people to make use of a particular service, special offer, or upgrade, then it is likely to be direct marketing." A neutral tone does not help either, because the guidance treats context and purpose as part of the test.
Can the soft opt-in save a promotional text-back?
Almost certainly not, and the reason is mechanical rather than arguable. Regulation 22(3) sets three conditions and all three must hold. The first two are plausible for a genuine enquiry: you obtained the details "in the course of the sale or negotiations for the sale of a product or service", and the marketing is about "similar products and services only".
The third is the one that fails. The recipient must have been given a simple means of refusing "at the time that the details were initially collected, and, where he did not initially refuse the use of the details, at the time of each subsequent communication."
On a missed call the number arrives by caller line identification. There is no form, no conversation, and no moment at which you could have offered an opt-out, because the whole premise is that nobody spoke to the caller. The condition cannot be satisfied after the fact, and putting the opt-out in the text itself is the wrong time.
You do not know why they rang
There is a second problem underneath the first. You missed the call, so the reason for it is unknown to you. A quote request satisfies condition (a). A wrong number, a supplier, or someone asking your opening hours does not, and a blanket text to every missed number cannot tell those apart.
What is the exposure if you get it wrong?
Larger than it used to be, and the ICO has just made an example of the exact defence a text-back operator would reach for.
On 15 January 2026 the ICO fined Allay Claims Ltd £120,000 for 4,046,947 SMS messages promoting PPI tax refund services, sent without valid consent and without complying with the soft opt-in. Allay argued they were service updates. The ICO's finding: "These messages were not service updates, as Allay later claimed, but direct marketing communications designed to prompt action." Andy Curry, the ICO's Head of Investigations, put it more bluntly still, that "sending marketing messages under the guise of service updates, isn't enough".
The ceiling moved this year
PECR's Schedule 1 was substituted on 5 February 2026 by the Data (Use and Access) Act 2025, and paragraph 18 puts Regulation 22 in the higher-maximum limb of section 157 of the Data Protection Act 2018. That maximum is £17,500,000 or 4% of total annual worldwide turnover, whichever is higher. Any article still quoting PECR's old £500,000 cap is out of date.
Scale matters to what a regulator actually does, and a plumber sending thirty texts a month is not Allay. The point is that the rule is the same rule, and the defence has now been tested and rejected.
Note what the alternative does not engage. An AI answering a live call is not sending electronic mail, so Regulation 22 has nothing to say about it. The disclosure duties that do apply to a voice agent are a different question, covered in the AI disclosure guide.
So when is text-back the right buy?
When the enquiry survives being answered later, in writing, by a human. That is the whole test, and it is a real category.
| Buy text-back when | Buy something that answers when |
|---|---|
| Enquiries are simple and not time-critical | The caller needs an answer during the call |
| You will read and reply to messages yourself | Nobody is available to reply for hours |
| Callers are mobile users comfortable texting | Callers expect to speak to someone |
| You need no booking, diary or triage logic | The call should end in a booked slot |
| Your message can stay purely administrative | You want to make offers to callers |
The last row is the one to weigh properly. If your reason for wanting text-back is to push a promotion at people who rang you, the cheap product has become the legally complicated one, and the compliance work costs more than the price difference you were chasing.
What we would not use it for
Three cases where a text back is the wrong instrument, and one common claim we checked and could not support.
Out-of-hours emergencies are the clearest. A burst pipe at 11pm is not a texting situation, and the on-call routing that handles it properly is set out in the trades emergency guide. Clinical lines are the second: a caller describing a symptom to an SMS thread creates a record with duties attached, and the boundaries are in the clinic guide. Withheld numbers are the third, and they are simply invisible to the whole mechanism.
The claim we could not support is the popular one that a landline caller cannot receive a text at all. UK landline providers including BT, Virgin Media, TalkTalk, Plusnet and Vodafone do deliver SMS to landlines, read out as speech. Delivery is patchy and the experience is poor, and Twilio's UK guidance notes Virgin Mobile no longer supports SMS to UK landline numbers, but "the text just vanishes" is not accurate and we are not going to print it.
Frequently asked questions
Is it legal to send an automated text to everyone who rings and does not get through? If the text is purely administrative, PECR Regulation 22 does not apply, because the regulation only covers messages sent for the purposes of direct marketing. The ICO's service-message examples cover almost exactly what a plain text-back says. The moment you add an offer, a discount, or a mention of your other services, you are sending direct marketing to someone who did not consent, and the soft opt-in will not cover you. This is a summary of published guidance, not legal advice.
Why not just put an opt-out line in the text? Because Regulation 22(3)(c) requires the opt-out to have been offered when the contact details were collected, and then again with each later message. A missed call collects the number by caller line identification, so the first opportunity never existed. An opt-out in the message is good practice and Regulation 23 requires a working one on any marketing by electronic mail, but it does not retrospectively create the soft opt-in.
Are the vendors selling this actually different products? Often not. Two of the UK text-back vendors we looked at publish overlapping feature sets, the same free-setup offer and similar per-text estimates at prices 2.2 times apart. Our reading, and it is inference rather than anything either vendor states, is that both are white-label builds on the same platform. A practical test: if two quotes list the same features and the same per-text figure, ask what platform sits underneath.
Should we run both? It is the most defensible setup and it is what we would do. Something answers the call, and a text goes to anyone who still ends up unanswered, kept strictly administrative. Just cost it properly, because the sum of two entry tiers is no longer near the price of one.