Automated multilingual Gmail draft reply with OpenAI GPT-4o

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Important notice

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

1. Workflow Overview

Automated Multilingual Gmail Draft Reply with OpenAI GPT 4o in n8n Who is this for? This workflow is ideal for anyone who receives a high volume of Gmail inquiries, especially those providing multi...

Best for

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

Tools used

n8n-nodes-base.if, n8n-nodes-base.stickynote, n8n-nodes-base.gmail, n8n-nodes-base.switch, @n8n/n8n-nodes-langchain.chainllm, n8n-nodes-base.gmailtrigger, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Automated multilingual Gmail draft reply with OpenAI GPT-4o
Workflow name: Automated multilingual Gmail draft reply with OpenAI GPT-4o

Automated Multilingual Gmail Draft Reply with OpenAI GPT-4o in n8n

Who is this for?

This workflow is ideal for anyone who receives a high volume of Gmail inquiries, especially those providing multilingual customer support or handling diverse client communications.

What problem is this workflow solving?

Managing frequent emails in multiple languages can be overwhelming. This workflow reduces manual drafting by automatically generating context-aware replies using OpenAI GPT-4o, letting users focus on personalization and quality assurance.

What this workflow does

Monitors your Gmail inbox for new emails with a specific label (e.g., "Inquiry").
Uses OpenAI GPT-4o for message assessment and language detection.
Parses information using a JSON parser.
Generates an AI-powered draft reply in the detected language via OpenAI GPT-4o.
Converts the reply to HTML and saves it as a draft in the original Gmail thread for your review.

Setup

Connect your Gmail account and set up relevant labels in both Gmail and the workflow.
Integrate your OpenAI credentials in n8n.
Configure the workflow trigger for your desired labels.

How to customize this workflow to your needs

Adjust label names in both Gmail and the workflow for different email categories.
Define custom starting and ending phrases for draft replies per supported language.
Expand supported languages or modify AI prompt instructions to suit your brand’s tone.

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 - If Needs Reply

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

Block 2 - Sticky Note

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

Block 3 - Sticky Note1

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

Block 4 - Gmail - Create Draft

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

Block 5 - Sticky Note4

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

Block 6 - Switch based on email language

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

Block 7 - Sticky Note3

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

Block 8 - Generate email for a Japanese client

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.4

Block 9 - Generate email reply for an English client

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.4

Block 10 - Sticky Note5

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

Block 11 - Gmail trigger

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

Block 12 - OpenAI GPT-4o

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

Block 13 - Assess if a message needs a reply and identify the language

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.3

Block 14 - Parser Result

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

Block 15 - OpenAI GPT 4o - For English

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

Block 16 - OpenAI GPT-4o - for Japanese

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

3. Summary Table

Workflow	Automated multilingual Gmail draft reply with OpenAI GPT-4o
Complexity	advanced
Nodes	16
Categories	Ticket Management, Multimodal AI
Author	Henry
Published	11 Jun 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/4870/4870.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 Automated multilingual Gmail draft reply with OpenAI 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, Multimodal AI use case.

Henry

5 workflows

Nodes

n8n-nodes-base.if n8n-nodes-base.stickynote n8n-nodes-base.gmail n8n-nodes-base.switch @n8n/n8n-nodes-langchain.chainllm n8n-nodes-base.gmailtrigger @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured

Complexity

advanced

Published 11 Jun 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/4870/4870.json

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Automated multilingual Gmail draft reply with OpenAI GPT-4o

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Automated Multilingual Gmail Draft Reply with OpenAI GPT-4o in n8n

Who is this for?

What problem is this workflow solving?

What this workflow does

Setup

How to customize this workflow to your needs

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - If Needs Reply

Block 2 - Sticky Note

Block 3 - Sticky Note1

Block 4 - Gmail - Create Draft

Block 5 - Sticky Note4

Block 6 - Switch based on email language

Block 7 - Sticky Note3

Block 8 - Generate email for a Japanese client

Block 9 - Generate email reply for an English client

Block 10 - Sticky Note5

Block 11 - Gmail trigger

Block 12 - OpenAI GPT-4o

Block 13 - Assess if a message needs a reply and identify the language

Block 14 - Parser Result

Block 15 - OpenAI GPT 4o - For English

Block 16 - OpenAI GPT-4o - for Japanese

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