Boost LINE Response with Gemini AI & Google Sheets Automation

Transform your LINE Official Account into an intelligent customer service powerhouse that responds instantly to Japanese customers while automatically handling inquiries 24/7. This n8n workflow combines Google Gemini AI with automated LINE messaging to deliver smart responses and seamless escalation management.

What this workflow does

This automation receives customer messages from your LINE Official Account via webhook and intelligently processes each inquiry through Google Gemini AI. The system classifies messages into four categories: FAQ, product inquiries, complaints, or other requests. Based on the classification, it automatically sends appropriate Japanese responses through the LINE Reply API. Critical complaints are escalated via Gmail to designated staff members, while every interaction gets logged to Google Sheets for comprehensive tracking and analysis.

Perfect for these use cases

• Retail shops handling product availability and store hour inquiries
• Restaurants managing reservation requests and menu questions
• Beauty salons responding to booking and service inquiries
• Service providers offering instant responses to common customer questions
• Small businesses reducing response times without additional staffing costs

Technical details

Built with essential n8n nodes including webhook triggers for LINE integration, HTTP requests for API communication, switch logic for message routing, Gmail nodes for escalation, and configuration nodes for easy customization. The workflow integrates seamlessly with LINE Messaging API, Google Gemini AI for intelligent classification, Google Sheets for data logging, and Gmail for staff notifications.

Setup requires a LINE Official Account with Messaging API enabled, Google Gemini API key (free tier available), and Google Sheets plus Gmail OAuth2 credentials. The workflow is fully customizable - simply edit the classification prompt to match your business type and extend the switch node rules to add more response categories.

Ideal for small to medium Japanese businesses seeking to automate customer support while maintaining quality service standards and comprehensive interaction tracking.