Draft and send AI customer support email replies with Gmail and Google Sheets

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1. Workflow Overview

How it works 1. Gmail is monitored every minute for new incoming emails 2. Automated and irrelevant emails are filtered out (newsletters, noreply senders, out of office replies, bounce notification...

Best for

Support Chatbot automation workflows
AI Chatbot automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.gmailtrigger, n8n-nodes-base.if, @n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.lmchatopenrouter, n8n-nodes-base.gmail, n8n-nodes-base.googlesheets, n8n-nodes-base.scheduletrigger, 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 George Dan.

Original n8n.io source

1.1 Workflow description

Title: Draft and send AI customer support email replies with Gmail and Google Sheets
Workflow name: Draft and send AI customer support email replies with Gmail and Google Sheets

How it works

Gmail is monitored every minute for new incoming emails
Automated and irrelevant emails are filtered out (newsletters, noreply senders, out-of-office replies, bounce notifications)
AI reads the email and drafts a reply based on your company documentation - embedded directly in the system prompt, no vector database needed
The original email and the draft reply are logged to a Google Sheet for human review
Type "send" in the Send column to approve a reply - the workflow detects it and sends it via Gmail
The row is updated to "Replied" to prevent duplicate sends

Set up steps

Connect your Gmail, OpenRouter, and Google Sheets credentials (~5 min)
Create a Google Sheet with columns: Message ID, From, Subject, Body, Reply, Send
In the Draft AI Reply node, replace the sample company documentation in the system prompt with your own
In the Filter Unwanted Emails node, update the first condition with your own email address
Activate 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 - Receive Customer Emails

Type / Role: n8n-nodes-base.gmailTrigger - gmailTrigger
Config choices: Version 1.3

Block 2 - Filter Unwanted Emails

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 3 - Draft AI Reply

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.9

Block 4 - OpenRouter Model

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

Block 5 - Mark Email as Read

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

Block 6 - Log to Google Sheets

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 7 - Check Pending Replies

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.3

Block 8 - Get Approved Replies

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 9 - Send Reply to Customer

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

Block 10 - Update Status to Replied

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 11 - Is Approved to Send?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 12 - Overview

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

Block 13 - Section - Email Intake

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

Block 14 - Section - Review and Send

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

3. Summary Table

Workflow	Draft and send AI customer support email replies with Gmail and Google Sheets
Complexity	intermediate
Nodes	14
Categories	Support Chatbot, AI Chatbot
Author	George Dan
Published	14 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/14038/14038.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 Support Chatbot workflows AI Chatbot workflows

Frequently asked questions

What does Draft and send AI customer support email replies with Gmail and Google 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 Support Chatbot, AI Chatbot use case.

George Dan

3 workflows

Nodes

n8n-nodes-base.gmailtrigger n8n-nodes-base.if @n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.lmchatopenrouter n8n-nodes-base.gmail n8n-nodes-base.googlesheets n8n-nodes-base.scheduletrigger n8n-nodes-base.stickynote

Complexity

intermediate

Published 14 Mar 2026

Likes 0

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Install path: /data/workflows/14038/14038.json

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Draft and send AI customer support email replies with Gmail and Google Sheets

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How it works

Set up steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Receive Customer Emails

Block 2 - Filter Unwanted Emails

Block 3 - Draft AI Reply

Block 4 - OpenRouter Model

Block 5 - Mark Email as Read

Block 6 - Log to Google Sheets

Block 7 - Check Pending Replies

Block 8 - Get Approved Replies

Block 9 - Send Reply to Customer

Block 10 - Update Status to Replied

Block 11 - Is Approved to Send?

Block 12 - Overview

Block 13 - Section - Email Intake

Block 14 - Section - Review and Send

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