# Respond to missed calls with Twilio SMS: n8n workflow template

> Started by another system calling it, and works across Email and Twilio. 12 steps, 3 branches: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/respond-to-missed-calls-with-twilio-sms (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Alerts and monitoring](https://millionrounds.com/workflows?category=Alerts+and+monitoring#library)

# Respond to missed calls with Twilio SMS

Started by another system calling it, and works across Email and Twilio. 12 steps, 3 branches: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Frespond-to-missed-calls-with-twilio-sms)

**12 steps** Medium: a working afternoon

**3** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Logic 9 Service 2

The steps in the order they run, from what starts it.

- 1 **Receive Call Event** Webhook *Starts it*
- 2 **Normalize Call Event** Code *Logic*
- 3 **Is This a Valid Missed Call?** If *Logic*
- 4 **Deduplicate Call Event** Code *Logic*
- 5 **Stop, Not a Missed Call** No Op *Logic*
- 6 **Is This a New Call Event?** If *Logic*
- 7 **Check Business Hours** Code *Logic*
- 8 **Stop, Duplicate Event** No Op *Logic*
- 9 **Build Missed-Call Text** Code *Logic*
- 10 **Send SMS via Twilio** Twilio *Service*
- 11 **Did Twilio Accept the SMS?** If *Logic*
- 12 **Email Business Alert** Email Send *Service*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 12, with 3 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Email, Twilio
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Email and Twilio accounts. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 12 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 12 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Frespond-to-missed-calls-with-twilio-sms)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Email](https://millionrounds.com/workflows?service=Email#library)[Twilio](https://millionrounds.com/workflows?service=Twilio#library)

## Workflows like it

Also alerts and monitoring, with the same services where possible, closest in size first.

- [**Automated YouTube subscription notifications with RSS** 12 steps · Email, RSS](https://millionrounds.com/workflow/automated-youtube-subscription-notifications-with-rss)
- [**Automated construction project alerts** 12 steps · Email](https://millionrounds.com/workflow/automated-construction-project-alerts)
- [**Monitor SSL certificate expiry with Google Sheets and SMTP** 12 steps · Email, Google Sheets](https://millionrounds.com/workflow/monitor-ssl-certificate-expiry-with-google-sheets-and-smtp)
- [**Monitor brand domains and typosquat variants with DomainKits** 12 steps · Email](https://millionrounds.com/workflow/monitor-brand-domains-and-typosquat-variants-with-domainkits)
- [**Real-time stock monitor with Google Sheets and Telegram** 12 steps · Email, Google Sheets](https://millionrounds.com/workflow/real-time-stock-monitor-with-google-sheets-and-telegram)
- [**Text back missed callers with Twilio and CallRail** 12 steps · Email, Twilio](https://millionrounds.com/workflow/text-back-missed-callers-with-twilio-and-callrail)