Auto-label incoming Gmail emails using AI

##  Sort Gmail messages by category with AI 

## 👥 Who's it for  
This workflow is perfect for individuals or teams who receive a high volume of emails 📥 and want to automatically organize them into Gmail labels 🏷️ using AI. No coding required!

## 🤖 What it does  
It automatically processes new Gmail emails, skips those that already have labels, sends the content to an AI Agent powered by GPT-4o mini 🧠, and applies a relevant label based on the content. All labels must exist in Gmail beforehand.

## ⚙️ How it works  
1. **📬 Gmail Trigger** – Activates on new email received.  
2. **🚫 Filter** – Skips emails that already have a label.  
3. **🧠 AI Agent (GPT-4o mini)** – Analyzes the message and decides which label fits best.  
4. **🧾 Structured Output Parser** – Formats the AI output into a clean JSON.  
5. **🔀 Switch Node** – Routes each email to the correct label path based on the AI result.  
6. **🏷️ Gmail Nodes** – Assign the Gmail label to the original email.

## 📋 Requirements  
- Gmail account connected to n8n  
- Pre-created labels in Gmail matching the AI categories  
- OpenAI credentials with GPT-4o mini access  
- n8n's AI Agent & Structured Output Parser nodes  

## 🛠️ How to set up  
1. Open the workflow and adjust the **trigger interval** (e.g., every minute, hours or Custom using Cron ⏱️)  
2. Check that the **Filter** skips emails with existing labels  
3. Define your categories in the **AI Agent prompt** and make sure they match the Gmail labels  
4. Configure the **Switch Node** conditions for each category  
5. Ensure each **Gmail Label Node** applies the correct label  
6. Save and activate the workflow ✅

## 🎨 How to customize the workflow  
- Add or remove categories in the AI prompt & Switch Node   
- Fine-tune prompt instructions to match your specific use case