Automation
WhatsApp Audio Replies & Automated Follow-Ups
WhatsApp automation that sends prerecorded audio replies, tracks contacts, and schedules follow-up messages using n8n and Evolution API.
Overview
A customer communication automation built with n8n and Evolution API. The workflow receives incoming WhatsApp messages, checks the contact record, retrieves prerecorded audio files, and sends them in a defined sequence.
What I built
- Incoming WhatsApp message handling through webhooks.
- Contact lookup and record updates.
- Prerecorded audio retrieval and ordered delivery.
- Scheduled reminder processing.
- Reminder status tracking.
The problem
Responding to incoming WhatsApp enquiries and keeping track of follow-ups requires consistent contact records and an ordered message sequence.
The workflow
Incoming messages arrive through a webhook. The workflow looks up the contact, updates or creates their record, retrieves prerecorded audio files, sorts them, and sends them in sequence through Evolution API. A separate scheduled workflow checks due reminders, sends follow-up messages, and updates the contact’s reminder status. The audio is prerecorded.
Tools
n8n / Evolution API / Webhooks / Persistent Data Tables
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