Setting up missed-call text back: options, wording, pitfalls

The problem it solves, in numbers

A worked example, not anyone's results. A plumber gets 40 inbound calls a month and answers 25. Of the 15 missed, perhaps 5 leave a voicemail, 4 ring back later, and 6 ring the next plumber on the list. If the average job is £180, those 6 calls are worth around £1,080 a month, or nearly £13,000 a year, before you count repeat work.

A text sent within 30 seconds of the missed call will not recover all six. It will recover some, because the customer now knows you exist, you are busy rather than ignoring them, and they can reply with the problem instead of dialling again. That is a cheap fix for a five-figure leak.

The core difficulty: detecting the missed call

The text back needs to know a call was missed. On a landline or a VoIP number, that is easy, because the call passes through a system that logs it. On a personal mobile, the call goes from the network to your handset and nothing else sees it.

So the first decision is architectural. There are four ways to do it.

Option 1: A virtual number in front of your mobile

You take a new number, local landline or mobile format, from a VoIP or call-tracking provider. That number forwards to your mobile. If you do not answer within a set number of rings, the provider's system marks the call missed and fires a text from the same number.

This is the cleanest approach and it is how most managed systems work. Trustmark Trades, for example, gives each member a local landline forwarded to their mobile with call tracking, and Riley Marketing's fixed-fee system includes missed call text back on the same principle.

The cost is that you must put the new number on your website, van and Google Business Profile, and existing customers who have your mobile saved will bypass it. Over time the new number becomes the business number and the mobile becomes the one friends use. That is a good outcome, but it takes months.

Option 2: Conditional call forwarding to a service

Your mobile network supports conditional forwarding: 'if unanswered, forward to X'. Point X at a service number that answers, detects the caller ID, hangs up or plays a short message, and sends the text. Some AI receptionist products work this way, since the forwarded call can be answered by the AI instead of dropped. Our comparison of AI receptionists for trades covers those.

Advantage: you keep your existing mobile number. Disadvantage: the caller hears a ring, then a click, then either a message or silence, which can feel odd, and the forwarding adds a second or two of delay. Check your network's forwarding charges, as some bill the diverted leg.

Option 3: An app on the handset

On Android, an app can read the call log and send an SMS when a missed call appears. Several small apps do this. On iPhone, it cannot be done reliably because iOS does not expose the call log to third-party apps, which rules this option out for most people.

It is cheap and quick on Android, but fragile. Battery optimisation kills background apps, the SMS goes from your personal number with no record elsewhere, and there is no integration with a CRM. Fine as a stopgap.

Option 4: Business phone system

A hosted business phone system with a mobile app gives you a business number, call routing, voicemail transcription and missed-call events you can wire to anything. It is the right answer for a firm with two or more people answering, and overkill for a sole trader.

What the text should say

The message has three jobs: confirm who they reached, explain why you did not answer, and give them a way to move forward without ringing again. Keep it to one or two SMS segments.

• Sorry I missed your call, it's Dan at DJ Plumbing. I'm on a job at the moment. Reply here with what you need and your postcode and I'll get back to you as soon as I'm free.
• Hi, this is Northern Roofing. We're up a ladder right now! Text us a quick description and a photo if you can, and we'll call you back within the hour.
• Thanks for calling Ashby Electrical. We can't pick up just now. For emergencies reply URGENT and we'll ring straight back; for quotes, reply with your postcode and what you need doing.

Wording rules

• Name the business in the first sentence. The caller may have rung three firms
• Give a reason. 'On a job' is honest and reassures them you are working
• Ask for the postcode. It tells you whether the job is in your area before you call back
• Invite a photo for anything visual. A roofer or plasterer can quote faster from an image
• Set a callback expectation you can keep. 'Within the hour' only if that is true
• Do not include a link in the first message. Unknown number plus link reads as a scam
• Sign off with a first name. It is a tradesperson texting, not a call centre

Wiring it into the rest of the system

The text back is not a standalone gadget. The missed call should also create a record: caller number, time, and status 'missed, texted, awaiting reply'. If the caller replies, the record updates. If nobody calls them back within an hour, something should nag you.

That is CRM territory, and the integration is the point. Our guide to a CRM for a one-van business explains the minimal setup, and the wider picture of how this stage connects to quoting and reviews is in the anatomy of a trades lead system.

Providers who bundle the text back with a CRM are listed in our missed call text back providers for UK trades comparison.

Seven pitfalls

• Texting landlines. A missed call from a landline cannot receive SMS. Filter numbers that do not start 07 (or suppress if the provider flags them as fixed line)
• Texting withheld numbers. There is no number to text. Make sure the system fails silently rather than erroring
• Texting your own number. If you ring your business line from your mobile to test it, you will text yourself. Add your own numbers to an exclusion list
• Repeat texting. A customer who rings three times in ten minutes should get one text, not three. Set a suppression window of at least an hour per number
• Texting at 3am. A missed emergency call at night still deserves a text, but a cheerful 'on a job!' message at 3am looks automated. Use a night variant: 'We're closed until 7am; reply URGENT if this can't wait'
• Forgetting voicemail. If the forwarded call still drops to your mobile voicemail, the customer gets both a voicemail prompt and a text. Shorten the ring count so the forward happens before voicemail picks up
• Nobody reading the replies. The text invites a reply. If replies land in a web inbox nobody checks from the van, you have built a second place to miss customers

A short test plan before going live

Ring the business number from a friend's mobile and do not answer. Time the text. Ring again within five minutes and confirm no second text. Ring from a landline and confirm nothing errors. Ring at night if you have a night variant. Then reply to the text and check where the reply appears and who is notified.

Twenty minutes of testing saves the embarrassment of a customer receiving three identical messages and a voicemail.

Frequently asked questions