Automate email triage with GPT-4.1-mini classification and Gmail auto-replies

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

How it works: Detects new unread Gmail messages Extracts sender name for personalized replies Classifies the email into one of four categories Applies the correct Gmail label and either sends an au...

Best for

Ticket Management automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.gmailtrigger, n8n-nodes-base.if, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.set, n8n-nodes-base.gmail, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.stickynote, @n8n/n8n-nodes-langchain.informationextractor

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Giovanni Beggiato.

Original n8n.io source

1.1 Workflow description

Title: Automate email triage with GPT-4.1-mini classification and Gmail auto-replies
Workflow name: Automate email triage with GPT-4.1-mini classification and Gmail auto-replies

How it works:

Detects new unread Gmail messages
Extracts sender name for personalized replies
Classifies the email into one of four categories
Applies the correct Gmail label and either sends an auto-reply, creates a draft, or logs the contact in Google Sheets

Setup steps:

Takes about 5–10 minutes to connect accounts and set labels
Connect Gmail, OpenAI, and optional Google Sheets in n8n
Add label IDs, Google Sheet ID, sheet name, and phone number in Set – Config
Create four Gmail labels for the categories
Keep full setup instructions in the sticky notes inside the workflow

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Gmail Trigger

Type / Role: n8n-nodes-base.gmailTrigger - gmailTrigger
Config choices: Version 1.2

Block 2 - If

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 3 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 4 - Name Found

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 5 - Name Not Found

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 6 - OpenAI Chat Model1

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 7 - Label - Agency Lead

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 8 - Label - Course Request

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 9 - Label - Paid Collaborations

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 10 - Label - Miscellaneous

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 11 - Message a model

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 12 - Create a draft

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 13 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 14 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 15 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 16 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Name Extractor

Type / Role: @n8n/n8n-nodes-langchain.informationExtractor - informationExtractor
Config choices: Version 1.2

Block 19 - Single Intro Line

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 20 - Reducing content before LLM

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 21 - AI-Classification & Sentiment Analysis

Type / Role: @n8n/n8n-nodes-langchain.textClassifier - textClassifier
Config choices: Version 1.1

Block 22 - Standard Answer

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 23 - Standard Answer 2

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 24 - Update DB

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

3. Summary Table

Workflow	Automate email triage with GPT-4.1-mini classification and Gmail auto-replies
Complexity	advanced
Nodes	24
Categories	Ticket Management, Multimodal AI
Author	Giovanni Beggiato
Published	14 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7399/7399.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Ticket Management workflows Multimodal AI workflows

Frequently asked questions

What does Automate email triage with GPT-4.1-mini classification and Gmail auto-replies do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Ticket Management, Multimodal AI use case.

Giovanni Beggiato

1 workflow

Nodes

n8n-nodes-base.gmailtrigger n8n-nodes-base.if @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.set n8n-nodes-base.gmail @n8n/n8n-nodes-langchain.openai n8n-nodes-base.stickynote @n8n/n8n-nodes-langchain.informationextractor

Complexity

advanced

Published 14 Aug 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/7399/7399.json

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Automate email triage with GPT-4.1-mini classification and Gmail auto-replies

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works:

Setup steps:

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Gmail Trigger

Block 2 - If

Block 3 - OpenAI Chat Model

Block 4 - Name Found

Block 5 - Name Not Found

Block 6 - OpenAI Chat Model1

Block 7 - Label - Agency Lead

Block 8 - Label - Course Request

Block 9 - Label - Paid Collaborations

Block 10 - Label - Miscellaneous

Block 11 - Message a model

Block 12 - Create a draft

Block 13 - Sticky Note

Block 14 - Sticky Note1

Block 15 - Sticky Note2

Block 16 - Sticky Note3

Block 17 - Sticky Note4

Block 18 - Name Extractor

Block 19 - Single Intro Line

Block 20 - Reducing content before LLM

Block 21 - AI-Classification & Sentiment Analysis

Block 22 - Standard Answer

Block 23 - Standard Answer 2

Block 24 - Update DB

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions