🎯 Classify Gmail emails with GPT-4o mini and send Telegram notifications

⚡ 1,204 views · 🎯 AI Summarization & Classification

Description

Gmail AI Email Classifier & Notifier

Since Gmail inboxes can quickly become cluttered, this workflow provides an automated AI-based email classification system. It listens for new emails, categorizes them using an AI classifier, applies Gmail labels, and sends you a Telegram notification with a quick summary.

If you often miss urgent client messages or struggle with sorting work vs. promotions, this workflow ensures you never overlook important emails.

Use case: Especially useful for professionals who receive a high volume of mixed emails (clients, work, promotions). The workflow automatically labels and notifies you of new emails based on their category.

How It Works

Trigger Input
- The workflow starts with the Gmail Trigger node, which listens for new incoming emails.
- By default, it polls every minute, but you can adjust the polling frequency.
- Email metadata (from, subject, body) is passed downstream.
Example JSON input:
```
{
  "from": "client@example.com",
  "subject": "Urgent project deadline",
  "text": "Please review the attached contract ASAP"
}
```
Classify Email (AI)
- The Classification Agent (powered by OpenAI via LangChain) receives the email data.
- It sorts the email into one of four categories:
  - High Priority – urgent, time-sensitive
  - Work Related – general work emails
  - Promotions – newsletters, offers, sales
  - Other – uncategorized emails
- The classifier uses a system prompt to ensure output is returned in JSON format for downstream processing.
Apply Gmail Labels
- Based on classification, the workflow applies the corresponding Gmail label:
  - High Priority → “Important + Starred”
  - Work Related → “Work” (custom Gmail label)
  - Promotions → “Promotions” (custom Gmail label)
- Each label must already exist in Gmail for the operation to work.
Generate Notification
- The AI Agent (notification assistant) takes the classified email and rewrites it into a short, casual notification.
- Example notification:
```
[High Priority] New email from client@example.com  
Subject: Urgent project deadline  
"Please review the attached contract ASAP"
```
Send to Telegram
- The Telegram node sends the generated notification to your personal chat ID.
- Requires a Telegram bot created with @BotFather and your chat ID configured.

How to Use

Import this workflow into n8n.
Set up Gmail OAuth2 credentials and connect your Gmail account.
Create Gmail labels: High Priority, Work Related, Promotions.
Set up a Telegram bot in @BotFather and copy your chatId into the node.
Run the workflow — every new email will now be classified, labeled, and notified.

Requirements

n8n Gmail Trigger with Gmail OAuth2 credentials
OpenAI API key configured for LangChain nodes
Telegram bot created via @BotFather with your chat ID
Existing Gmail labels (Work, Promotions, etc.)

Customizing This Workflow

You can extend it by:

Adding more categories – e.g., “Finance,” “Personal,” or “Spam.”
Changing the notification channel – send to Slack, Discord, or SMS instead of Telegram.
Adjusting classification rules – edit the system prompt for finer-grained AI sorting.
Changing polling frequency – set Gmail Trigger to every 5 minutes instead of every minute.
Expanding extracted fields – include attachments, links, or CC addresses in the notification.

🔗 Nodes Used

Telegram, Gmail, Gmail Trigger, AI Agent, OpenAI Chat Model, Text Classifier

📥 Import

Download workflow.json and import into n8n: Workflow menu → Import from File

📖 Importing guide · 🔑 Credential setup