Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets

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1. Workflow Overview

What this workflow does This workflow monitors your Gmail inbox every minute and automatically extracts SES (System Engineering Service) project information from recruitment emails. It uses AI to c...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.gmailtrigger, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.code, n8n-nodes-base.if, n8n-nodes-base.googlesheets, n8n-nodes-base.noop, n8n-nodes-base.set, n8n-nodes-base.stickynote

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets
Workflow name: Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets

What this workflow does

This workflow monitors your Gmail inbox every minute and automatically extracts SES (System Engineering Service) project information from recruitment emails. It uses AI to classify emails and parse structured data, then appends project details to a Google Spreadsheet.

Workflow steps

Gmail Trigger polls your inbox every minute
AI Project Classifier analyzes each email to determine if it's a project recruitment email
Parse JSON converts the AI response into structured data
Is Project Email? routes project emails forward; others are skipped
Set Spreadsheet Config sets the target spreadsheet ID and sheet name
Append to Spreadsheet writes the extracted project data as a new row

Requirements

Gmail OAuth2 credentials
OpenAI API credentials
Google Sheets OAuth2 credentials
A Google Spreadsheet with a sheet named Projects (or update the sheet name in the Set Spreadsheet Config node)

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

Block 2 - AI Project Classifier

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1

Block 3 - Parse JSON

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 4 - Is Project Email?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2

Block 5 - Append to Spreadsheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 6 - Skip (Non-Project Email)

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

Block 7 - Set Spreadsheet Config

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

Block 8 - Workflow Overview

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

Block 9 - Note: Gmail Trigger

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

Block 10 - Note: AI Classifier

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

Block 11 - Note: Config

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

Block 12 - Note: Spreadsheet

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

3. Summary Table

Workflow	Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets
Complexity	intermediate
Nodes	12
Categories	Document Extraction, AI Summarization
Author	Fujii Ryota
Published	05 May 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/15485/15485.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 Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets 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 Document Extraction, AI Summarization use case.

Fujii Ryota

3 workflows

Nodes

n8n-nodes-base.gmailtrigger @n8n/n8n-nodes-langchain.openai n8n-nodes-base.code n8n-nodes-base.if n8n-nodes-base.googlesheets n8n-nodes-base.noop n8n-nodes-base.set n8n-nodes-base.stickynote

Complexity

intermediate

Published 05 May 2026

Likes 0

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Install path: /data/workflows/15485/15485.json

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Classify SES project emails with GPT-4.1 mini and save from Gmail to Sheets

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

What this workflow does

Workflow steps

Requirements

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Gmail Trigger

Block 2 - AI Project Classifier

Block 3 - Parse JSON

Block 4 - Is Project Email?

Block 5 - Append to Spreadsheet

Block 6 - Skip (Non-Project Email)

Block 7 - Set Spreadsheet Config

Block 8 - Workflow Overview

Block 9 - Note: Gmail Trigger

Block 10 - Note: AI Classifier

Block 11 - Note: Config

Block 12 - Note: Spreadsheet

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