Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o

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1. Workflow Overview

Quick overview Automatically triage your Gmail inbox using OpenAI GPT 4o. Each new email is classified as Urgent or Not Urgent. Urgent emails get an AI drafted reply saved to Gmail Drafts. All emai...

Best for

Ticket Management automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

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

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o
Workflow name: Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o

Quick overview

Automatically triage your Gmail inbox using OpenAI GPT-4o. Each new email is classified as Urgent or Not Urgent. Urgent emails get an AI-drafted reply saved to Gmail Drafts. All emails are logged to Google Sheets for tracking.

How it works

Triggers every minute when a new email arrives in Gmail.
Extracts the sender, subject, body text, message ID, and thread ID from the email.
Sends the email details to OpenAI GPT-4o to classify the message as URGENT or NOT_URGENT.
If the email is urgent, OpenAI GPT-4o generates a concise reply and the workflow saves it as a Gmail draft in the original thread.
Appends a row to Google Sheets for each email, marking the urgency and whether a draft was created.

Setup

Connect a Gmail OAuth2 credential and adjust any trigger filters (such as labels) to control which emails are processed.
Add an OpenAI API credential with access to the gpt-4o model for both the classification and reply-drafting steps.
Connect a Google Sheets OAuth2 credential, set the target spreadsheet ID and sheet name, and create the columns Timestamp, Sender, Subject, Urgency, and Draft Created.

Requirements

Gmail account connected via OAuth2
OpenAI API key with GPT-4o access
Google account with Google Sheets OAuth2 connected
A Google Sheet with headers: Timestamp | Sender | Subject | Urgency | Draft Created

Customization

Change the Gmail Trigger to watch a specific label (e.g. "Clients" or "Support") instead of the full inbox to narrow the scope
Edit the urgency classification prompt in the Classify Email Urgency node to add a MEDIUM priority tier and add a third IF branch
Modify the reply tone in the Draft Urgent Reply node prompt — change "professional" to "friendly", "concise", or "formal"
Add a Slack or Telegram node after the IF node to send yourself an instant notification when an urgent email is detected
Replace the Google Sheets log with Notion, Airtable, or a CRM of your choice

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 - Sticky Note

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

Block 2 - Sticky Note1

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

Block 3 - Sticky Note2

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

Block 4 - Sticky Note3

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

Block 5 - Sticky Note4

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

Block 6 - When New Email Arrives

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

Block 7 - Extract Email Details

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3

Block 8 - AI Determines Urgency

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

Block 9 - Assign Urgency Label

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3

Block 10 - Check Email Urgency

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

Block 11 - Draft Urgent Reply with AI

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

Block 12 - Create Draft in Gmail

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

Block 13 - Log Urgent Email to Sheets

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

Block 14 - Log Non-Urgent Email to Sheets

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

3. Summary Table

Workflow	Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o
Complexity	intermediate
Nodes	14
Categories	Ticket Management, AI Summarization
Author	Muhammad Adeel
Published	26 May 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/15953/15953.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 AI Summarization workflows

Frequently asked questions

What does Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o 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, AI Summarization use case.

Muhammad Adeel

4 workflows

Nodes

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

Complexity

intermediate

Published 26 May 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/15953/15953.json

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Triage Gmail emails, draft AI replies, and log to Google Sheets with GPT-4o

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Quick overview

How it works

Setup

Requirements

Customization

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Sticky Note1

Block 3 - Sticky Note2

Block 4 - Sticky Note3

Block 5 - Sticky Note4

Block 6 - When New Email Arrives

Block 7 - Extract Email Details

Block 8 - AI Determines Urgency

Block 9 - Assign Urgency Label

Block 10 - Check Email Urgency

Block 11 - Draft Urgent Reply with AI

Block 12 - Create Draft in Gmail

Block 13 - Log Urgent Email to Sheets

Block 14 - Log Non-Urgent Email to Sheets

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