n8n WhatsApp Automation: Claude Replies via Twilio, Sheets & Gmail

Instant WhatsApp replies powered by Claude + Twilio—logged to Google Sheets, with Gmail alerts for complaints

This n8n automation receives inbound WhatsApp messages via Twilio, uses Anthropic Claude Haiku to classify intent and draft replies in your shop’s voice, then sends the response back through Twilio. At the same time, it records orders, questions, complaints, social messages, and other feedback to Google Sheets—and notifies you of complaints via Gmail.

What this workflow does

• Receives WhatsApp inbound messages through an n8n webhook connected to Twilio WhatsApp, with optional verification using your Twilio Auth Token.
• Extracts key message data (sender, recipient, profile name, message text, timestamp).
• Classifies intent (order, question, complaint, social, or other) using Anthropic Claude Haiku.
• Orders: Claude extracts structured order details, appends them to the Google Sheets “Orders” tab, and drafts an order confirmation reply.
• Questions: the workflow reads the Google Sheets “FAQ” tab and drafts a reply using only that FAQ content.
• Complaints: appends the issue to Google Sheets “Complaints”, drafts an apology with a same-day follow-up promise, and emails the owner via Gmail with the complaint details.
• Social / Other: drafts a short friendly response for social messages; logs other messages to Google Sheets “Review” for manual follow-up.
• Sends the reply back to the customer via Twilio WhatsApp and returns an empty TwiML response to acknowledge the webhook.

Use cases

• Automate WhatsApp order capture and confirmation without manual typing
• Answer customer questions using your curated FAQ from Google Sheets
• Catch negative feedback quickly—log it to Sheets and email the owner with details the same day

Technical details

• Integrations/Credentials: Twilio, Anthropic (Claude), Google Sheets, Gmail
• n8n nodes/tools used: if, set, code, gmail, switch, twilio
• Routing logic: Claude-based intent classification with conditional flows for Orders, FAQ Q&A, Complaints, Social, and Review logging

Ideal for: n8n users, automation engineers, and SaaS operators who want a practical WhatsApp automation workflow with clear operational logging and alerting.