# Send missed call text-backs with Twilio and email dispatcher approvals

> Quick overview This workflow receives missed-call webhook events, validates and normalizes the caller number, looks up the caller in an n8n Data Table, and sends an appropriate Twilio SMS text-back, while logging outcomes and emailing a dispatcher (with approval required after hours). How it works 1. Receives a POST webhook request for a missed call event. 2. Normalizes the incoming caller number, sets the call timestamp, and determines whether the call is after business hours. 3. If the phone number is missing or invalid, it responds with HTTP 400, logs the rejected event to an n8n Data Table, and emails the dispatcher. 4. If the phone number is valid, it immediately responds with HTTP 202, looks up the caller in an n8n Data Table, and checks whether the call happened outside business hours. 5. For after-hours calls, it sends an approval email to the dispatcher and proceeds only if the dispatcher approves sending the text. 6. Builds a different SMS message for known customers versus f

- **Domain**: `n8n-workflow-20319.n8n.io`
- **Provider**: n8n.io (https://n8n.io)
- **Kind**: workflow
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 40%

## URLs
- Agent card: https://n8n.io/workflows/20319
- Page (HTML): https://agenstry.com/agents/n8n-workflow-20319.n8n.io
- Documentation: https://n8n.io/workflows/20319