Missed Call Text BackMissed call text back that gives every caller a next step
For any office that books by phone and can’t always pick up: when a call to your business goes unanswered, the caller gets a text with your booking link or one question, and the call lands in your CRM as a lead, so the next step does not wait for someone to check voicemail.
It is the API Integration, a fixed $1,200: one integration between two systems with documented APIs, here your Twilio number and your CRM, covering up to 3 event types, delivered 5 business days after API docs and test credentials arrive. Simon Dziak builds it in your own Twilio account and code repository, and you own it. Twilio usage is billed by Twilio to your account.
Fixed prices
All fixed-price offers- $1,200API IntegrationTwo systems connected through their APIs, with retries, logs, failure alerts and tests.See scope and start
- $2,500AI Feature or Agent BuildOne LLM feature or agent wired into your app or tools, with an eval set that shows how well it works.See scope and start
Something else? Describe your project
How it works
What the missed call text back build covers
01
The missed call is seen as an event
Your business number is forwarded to a Twilio number, or ported into your Twilio account; the spec says which. When a call goes unanswered, the build sees it and acts on it. A different phone system is a second integration, quoted in writing.
API Integration02
What the caller receives
A message such as: “Sorry your call to [business] was missed. Book a time here: [link], or reply with your question.” Written in your words and approved before launch.
03
A short text, in your words
The caller gets your booking link or one question, written in your words and approved before launch. If they reply, the reply is kept with the lead so whoever calls back sees it.
04
Logged in your CRM
Each missed call creates or updates the contact in your CRM with the time and the number. Retries, logs, a failure alert and tests are included. A staff notification by email is a setting in the same build.
05
Opt-outs handled
Twilio’s docs say that when Twilio receives an Opt-out keyword from one of your users, it adds this phone number to a list of blocked numbers. A caller who texts STOP gets no further texts from that number until they text START.
06
When you want more than a text
Web form leads answered with a booking link, or an AI follow-up that asks your intake questions by text and books the slot, are on the speed to lead page; the AI follow-up is the AI Feature or Agent Build at $2,500. The AI Receptionist Build at $5,000 answers the call itself, plus chat and forms, and includes missed-call text back.
Speed to lead automationAI receptionist for small businessAI answering service07
Built from Miami, for businesses across the US
Simon works from Miami and builds for businesses anywhere in the US, by email and shared documents.
App369 in Miami
Parts already in production
The same parts run in Workspace369
App369 built and runs Workspace369, a client-work platform for freelancers and small agencies, live on the App Store. Its texting and booking parts are what a missed call text back is wired from. It is App369’s own product, not client work.
Twilio texting and calling
Business numbers, two-way SMS with STOP opt-outs, and calls, inside a shared inbox.
Booking pages
Booking pages that offer open times from a connected Google Calendar and create the event with a confirmation.
- Twilio
- Webhooks
- Node.js
- TypeScript
FAQ
Questions before you start
How much does missed call text back cost?
$1,200 fixed, as the API Integration: your Twilio number and your CRM, up to 3 event types (the missed call, the caller’s reply and an opt-out). Your CRM needs a documented API; if it has none, the spec says so before you pay. Retries, logs, a failure alert and tests are included, delivered 5 business days after API docs and test credentials arrive. A web form flow or another system is a second integration, quoted in writing before you pay. Twilio usage is billed by Twilio to your own account.
Can I keep my business number?
Yes, in one of two ways, and the spec says which. Forwarding: you set your carrier to send unanswered calls to a Twilio number, so the text comes from that Twilio number, not the one the caller dialed. Porting: your number moves into your own Twilio account and the texts come from it; Twilio rings your phone first, and a call that goes unanswered triggers the text. Whether your line can be ported, and how long it takes, depends on your carrier.
Do I need to register to send texts?
Yes. Twilio’s docs say anyone sending SMS/MMS messages over a 10DLC number from an application to the US must register for A2P 10DLC. Simon prepares the details and you submit them in your own Twilio account. Approval is by the carriers and its timing varies, so texting goes live after it clears. This is not legal advice.
Is it legal to text back a missed call?
The text is written to go only to the number that just called you, name your business and say how to stop. Whether that is enough consent for the first text, and for any text after it, is yours to confirm with your counsel. This is not legal advice.
What if the caller texts STOP?
Twilio blocks further texts from that number to them until they text START. The opt-out is also logged with the contact in your CRM, as one of the 3 event types.
Does it run during business hours too?
It runs for any call that goes unanswered. A set of hours, such as after hours only, is a setting in the same build.
What do I own afterward?
The code in your repository, the Twilio account and number, and the records in your CRM. Nothing runs on an App369 account.
Do I need a call first?
No. The scope and the build happen in writing by email. If you want to talk it through, consultations are paid: $100 per 15 minutes, paid upfront.
Not a fixed-price job?
Describe it and get a written quote
Send what you need built or fixed. You get a written scope, a fixed price and a timeline; Simon replies by email, usually within one business day.
Prefer a call? Consultations are $100 per 15 minutes, paid upfront.