📧 AI-Powered Gmail Classification & Automation Workflow (n8n)

This n8n workflow is an AI-driven Gmail automation system that automatically reads,

classifies, and processes incoming emails using OpenAI and Google services.

🔹 1. Gmail Trigger (Inbox Watch)

• The workflow starts when a new email arrives in Gmail

• The email content (subject, body, sender) is passed into the automation

🔹 2. AI Email Classifier (OpenAI Chat Model)

• An AI model analyzes the email

• It classifies each message into predefined categories such as:

  • 📄 Receipt

  • 📢 Promotion

  • 🏢 Business

  • 👤 Personal

  • 🌐 Social

  • 📰 Newsletter

This replaces manual inbox sorting completely.

🔹 3. Conditional Routing (If / Switch Logic)

• Based on the AI classification, emails are routed automatically

• Each category follows its own logic path

🔹 4. Category-Specific Actions

Depending on the email type, the workflow can:

✉️ Business / Personal Emails

• Sent to an AI Agent

• AI can:

  • Summarize the email

  • Generate a smart reply

• Reply is sent automatically via Gmail – Send Message

📄 Receipts

• Extract key data (amount, vendor, date)

• Append structured data to Google Sheets (expense tracking)

• Upload attachments to Google Drive

Click on the Image to Download the Template👇👇

📢 Promotions / Newsletters / Social

• Logged or ignored

• Optionally summarized and stored

• Prevents inbox clutter

🔹 5. AI Agent Layer (Advanced Logic)

• Uses an AI Agent node powered by OpenAI

• Allows multi-step reasoning:

  • Decide what action to take

  • Choose whether to respond, save, or ignore

• Makes the workflow feel “human-like”

🔹 6. Google Workspace Integration

• Gmail → reading & sending emails

• Google Sheets → logging and tracking

• Google Drive → storing files and receipts

🚀 What This Workflow Achieves

✅ Fully automated inbox management
✅ AI-based email classification
✅ Smart replies without manual effort
✅ Automatic expense & receipt tracking
✅ Zero clutter, maximum productivity

💡 Perfect Use Cases

• Founders & solopreneurs

• Customer support automation

• Finance & receipt tracking

• AI personal assistants

• Inbox-zero systems

{

"receipt": {

"receipt_id": "RCPT-2026-0001",

"date": "2026-01-02",

"time": "14:05:00",

"currency": "USD",

"payment_method": "Card",

"status": "Paid",

"seller": {

"name": "Example Store",

"address": "123 Main Street, Casablanca, Morocco",

"phone": "+212 600 000 000",

"email": "contact@examplestore.ma",

"tax_id": "ICE123456789"

},

"customer": {

"name": "John Doe",

"phone": "+212 611 111 111",

"email": "john.doe@email.com"

},

"items": [

{

"item_id": "SKU-001",

"description": "Wireless Mouse",

"quantity": 1,

"unit_price": 150.00,

"total_price": 150.00

},

{

"item_id": "SKU-002",

"description": "Keyboard",

"quantity": 1,

"unit_price": 250.00,

"total_price": 250.00

}

],

"subtotal": 400.00,

"tax": {

"rate": 0.20,

"amount": 80.00

},

"discount": {

"description": "New Year Promo",

"amount": 20.00

},

"total_amount": 460.00,

"payment_details": {

"transaction_id": "TXN-987654321",

"paid_amount": 460.00,

"change": 0.00

},

"notes": "Thank you for your purchase!"

}

}

Output Parser JSON Example :