The Missed-Call Text-Back Agency: $2,500 a Month From Calls Nobody Answered
Every local business you walk past is leaking leads through its phone. Roofers, electricians, salons, they miss around a third of their calls, and for them a missed call is not an inconvenience, it is a customer dialing the next result on Google. This build catches the miss and texts the caller back in seconds, in the owner's voice, before that next call happens. The stack: a Twilio number that costs about a dollar a month, a Make scenario that starts free, one ChatGPT module, and a Calendly link. You charge $500 to install it and $250 a month to keep it running. Here is the exact build, step by step.
The math before you build
You are selling recovered revenue, the easiest thing on earth to price. These businesses miss around a third of their calls, and every miss is a lead dialing the next result on Google. Your fix costs them $500 once and $250 a month, and it pays for itself the first time it saves a single job. One roofing job can be a five-figure ticket. Your side of the ledger: a Twilio number at about a dollar a month per client, a Make plan that starts free, and a ChatGPT module doing the writing. Ten clients is $2,500 a month recurring, plus $5,000 in setup fees collected on the way there.
Step 1: Forward missed calls to a $1 Twilio number
Buy a Twilio number for the client. It runs about a dollar a month. They keep their existing business number and nothing about their marketing changes. The whole trick is conditional forwarding: their line forwards to the Twilio number only when nobody picks up. Answered calls work exactly like before, and the only calls that ever reach the Twilio number are the ones the client missed, which is what lets your automation see them. Send the client the setup message below and they can switch it on in a minute. Two rules. First, this system only texts people who just called the business. They reached out first, so the text is a reply. Never repurpose it for cold outreach. Second, when Twilio asks you to register the number for business texting, do it. Registration adds a few dollars a month and your texts will not deliver reliably without it.
Quick setup on your end: in your phone's call settings, turn on call forwarding for unanswered calls only and point it at this number: [Twilio number]. If you don't see the option, your carrier can flip it on in one call. Answered calls don't change at all, this only catches the ones you miss.Step 2: Build the Make scenario that texts back
Make's free tier covers about 1,000 operations a month, plenty to build and demo with. The build is two small scenarios. Scenario one is the text-back: 1. Trigger: a call hits the Twilio number. Because of the conditional forward, every call that lands here is a missed call by definition. 2. ChatGPT writes a one-line text in the owner's voice, using the exact prompt below. 3. Twilio sends that SMS straight back to the caller. Scenario two is the catch: when the caller texts back, log their number and message to a Google Sheet, then reply with the client's Calendly link. Paste the prompt into the ChatGPT module and swap in your client's details. It is casual, short, and emoji-free on purpose. It has to read like the owner typed it between jobs, and the first text carries no link so carriers do not flag it.
Write a one-sentence text from [Business Owner] at [Business Name] apologizing for the missed call and asking the caller what service they need and their address. Casual, like a busy owner typing between jobs. Under 160 characters. No emojis, no links.Step 3: Prove it on your own phone first
Do not pitch theory. Point the whole flow at your own phone, call it, let it ring out, and watch the text arrive. Then record a 60-second Loom of exactly that: call, miss, instant text, reply, booking link. That video is your entire sales deck. An owner who watches a missed call turn into a booked job in under a minute does not need convincing, they need an invoice. Use the talk track below while you screen-record.
This is your phone line on a busy Tuesday. I call, you're mid-job, it rings out. Now watch the customer's screen. Seconds later there's a text from you, asking what they need and where. They reply, the system logs the lead and sends your booking link. That missed call just became a job on your calendar, and you never touched your phone.Step 4: Pitch five local shops with a guarantee
Walk into five local shops, or send the DM below if you cannot walk in. Either way, lead with the Loom and deliver the offer line at the end word for word. The guarantee closes for you. Their missed calls are sitting right there in their own phone log, so the value shows up the first week. You are not asking them to believe you. You are asking them to check their own phone.
Hey [Name], quick one. [Business type]s miss about a third of their calls, and every missed call is a customer dialing the next shop on Google. I install a system that texts those callers back in seconds, in your name, before that happens. Here's a 60-second video of it working: [Loom link]. $500 setup, $250/mo, you'll close 3-5 extra jobs your first month or it's free.Step 5: Scale by duplicating, not rebuilding
Every new client is the same two scenarios duplicated, a fresh Twilio number, and a new name in the prompt. Twenty minutes of work, not a new build. You will outgrow Make's free tier after the first client or two. Upgrade when you cross 1,000 operations a month. It is the cheapest line item in the whole business. Ten clients is $2,500 a month recurring plus $5,000 banked in setup fees. The system texts back missed calls at 2 a.m. whether you are awake or not. Build it once, sell it ten times, and the invoice repeats every month.
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