Client Email AI Agent — Smart Email Response Automation (n8n Workflow)

Automate your inbox with AI-powered email understanding, classification, and response generation — directly inside Gmail (or other email provider), powered by OpenAI & LangChain.

🔍 What It Does

The Client Email AI Agent is a production-ready n8n workflow designed to intelligently manage inbound emails by:

✅ Analyzing email intent using GPT-4

✅ Classifying messages as either:

• 🛠️ Customer Support

• 💼 New Business Leads

✅ Generating professional replies using:

• Your company’s custom knowledge base (via Supabase vector store)

• Past email history (chat memory via Postgres)

• AI reasoning (LangChain agent + OpenAI)

✅ Replying automatically in Gmail, maintaining thread continuity

✅ Built-in memory, context awareness, and custom response structure.

🚀 Key Features

• Gmail Integrated: Real-time email polling using the Gmail Trigger node

• AI-Powered Categorization: GPT-4 classifies inquiries into support or leads

• Smart AI Agent: LangChain + GPT-4 + Supabase vector store + Postgres memory

• Threaded Responses: Replies are drafted in the same Gmail thread

• Structured Output: Ensures clean, reliable, and parseable AI email generation

• Fully Customizable: Update prompts, add response conditions, or plug in your own data

🛠️ Use Cases

• 🧑‍💼 Freelancers & Consultants: Automatically respond to new project inquiries

• 🧑‍🔧 Customer Support Teams: Draft responses for common questions instantly

• 🏢 AI Service Providers: Handle “How much do you charge?” and other sales leads with professional clarity

• 🧠 Knowledge Agents: Respond to emails using embedded vector data from internal docs

🔐 Requirements

• OpenAI API Key

• Supabase Account

• PostgreSQL Database

• Gmail Account with OAuth2 Access

🎯 Ideal For:

• Solo founders

• AI consultants

• Support-driven startups

• Agencies managing client communications.