Classify and auto-reply to Gmail with OpenAI, Google Sheets RAG and Telegram

📨 Gmail Classifier —Classify emails using AI and automate responses

This workflow delivers a complete, enterprise-grade Gmail automation system designed for high-volume teams. It classifies incoming emails, applies labels, generates AI-powered responses, and routes messages to the right department. It also includes optional demo email generation and an inbox cleanup utility so teams can test the workflow instantly.

🚀 What This Workflow Does - Classifies Gmail messages into High Priority, Customer Support, Promotions, or Finance/Billing - Generates AI-written replies or drafts based on category - Applies Gmail labels automatically - Uses RAG from Google Sheets for Support queries - Sends real-time internal notifications (Telegram) - Includes tools to generate & delete test emails for repeatable QA

🏢 Who This Is For Teams that want reliable, automated inbox management: - Customer Support - Sales - Billing & Finance - Operations - Solo founders who need executive inbox automation - AI-powered enterprise workflows using Gmail

🧩 Internal Workflow Overview 1. Gmail Trigger pulls unread emails from the inbox 2. Email Classifier Agent (OpenAI) cleans + classifies the email 3. Switch Node routes to the correct workflow lane 4. Labels are added → AI responders generate the message → internal teams get notified 5. Optional: Demo email generator + inbox cleanup for testing

🛠️ How to Set Up 1. Add credentials: - Gmail OAuth2 - OpenAI / Gemini - Google Sheets OAuth2 2. Copy the demo sheet: https://docs.google.com/spreadsheets/d/1A959skQt0a7RbdsD0IGaCbPxMv4a-HjmQL4hwB9TcXc/edit?usp=sharing 3. Update the Google Sheets nodes with your Document ID + Sheet Name 4. Enable Gmail Trigger (UNREAD filter recommended) 5. Use “Send Demo Emails” → test end-to-end behavior 6. Run the Gmail Classifier workflow live

📦 Requirements - Gmail API access - OpenAI/Gemini API key - Google Sheets OAuth (for RAG/lookup) - n8n (latest recommended version)

🎯 Ideal Enterprise Use Cases - Automated customer support with AI-written replies - High-priority routing for executives - Finance & billing summarization for operations - Filtering promotions/marketing noise from shared inboxes - AI-augmented helpdesk workflows