Auto-draft professional email replies with Gmail, AI, and Slack

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Important notice

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

1. Workflow Overview

What this workflow does This workflow monitors your Gmail inbox for new, unreplied emails and automatically generates a professional reply draft using AI. Instead of sending the email automatically...

Best for

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

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.limit, n8n-nodes-base.gmail, n8n-nodes-base.if, n8n-nodes-base.code, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.slack, 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 kota.

Original n8n.io source

1.1 Workflow description

Title: Auto-draft professional email replies with Gmail, AI, and Slack
Workflow name: Auto-draft professional email replies with Gmail, AI, and Slack

What this workflow does

This workflow monitors your Gmail inbox for new, unreplied emails and automatically generates a professional reply draft using AI.
Instead of sending the email automatically, the draft is sent to Slack so a human can review and decide whether to send it.

This makes it ideal for teams that want to save time on email replies while keeping full control over outgoing communication.

How it works

Checks Gmail on a schedule for new, unreplied emails
Limits the number of emails processed per run to avoid overload
Extracts the email body and sends it to an AI model
Generates a polite, professional reply draft
Sends the draft to a Slack channel for review
Adds a Gmail label to prevent duplicate processing

Setup time

~10–15 minutes

Who this is for

Customer support teams
Freelancers and consultants
Small businesses handling frequent email inquiries
Anyone who wants AI-assisted email replies with human approval

Requirements

Gmail account
Slack workspace
OpenAI (or compatible AI) credentials

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 - Schedule Trigger

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

Block 2 - Limit - Max emails per run

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

Block 3 - Gmail - Get message details

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

Block 4 - Search unreplied emails

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

Block 5 - Check if new emails exist

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

Block 6 - Extract email body for AI

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

Block 7 - AI - Draft professional email reply

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 2.1

Block 8 - Notify draft reply in Slack

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 9 - Mark email as AUTO_REPLIED

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

Block 10 - Sticky Note1

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

Block 11 - Sticky Note2

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

Block 12 - Sticky Note3

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

Block 13 - Sticky Note4

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

Block 14 - Sticky Note

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

Block 15 - Sticky Note5

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

Block 16 - OPTIONAL – Auto-send reply

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

3. Summary Table

Workflow	Auto-draft professional email replies with Gmail, AI, and Slack
Complexity	advanced
Nodes	16
Categories	Ticket Management, AI Summarization
Author	kota
Published	16 Dec 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/11845/11845.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 Auto-draft professional email replies with Gmail, AI, and Slack 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.

kota

3 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.limit n8n-nodes-base.gmail n8n-nodes-base.if n8n-nodes-base.code @n8n/n8n-nodes-langchain.openai n8n-nodes-base.slack n8n-nodes-base.stickynote

Complexity

advanced

Published 16 Dec 2025

Likes 0

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Install path: /data/workflows/11845/11845.json

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Auto-draft professional email replies with Gmail, AI, and Slack

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

What this workflow does

How it works

Setup time

Who this is for

Requirements

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Schedule Trigger

Block 2 - Limit - Max emails per run

Block 3 - Gmail - Get message details

Block 4 - Search unreplied emails

Block 5 - Check if new emails exist

Block 6 - Extract email body for AI

Block 7 - AI - Draft professional email reply

Block 8 - Notify draft reply in Slack

Block 9 - Mark email as AUTO_REPLIED

Block 10 - Sticky Note1

Block 11 - Sticky Note2

Block 12 - Sticky Note3

Block 13 - Sticky Note4

Block 14 - Sticky Note

Block 15 - Sticky Note5

Block 16 - OPTIONAL – Auto-send reply

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