Generate professional emails with custom tones using OpenAI GPT

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Important notice

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

1. Workflow Overview

AI Email Generator with Tone Selection Made by [Biznova](https://www.biz...

Best for

Content Creation automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.formtrigger, n8n-nodes-base.set, n8n-nodes-base.code, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.form, 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 Biznova.

Original n8n.io source

1.1 Workflow description

Title: Generate professional emails with custom tones using OpenAI GPT
Workflow name: Generate professional emails with custom tones using OpenAI GPT

AI Email Generator with Tone Selection

Made by Biznova on Tiktok

📧 What This Does

This workflow creates a professional email generator that allows users to:

Choose from multiple tones (Professional, Friendly, Formal, Casual)
Input recipient details, subject, and context
Generate a complete, well-formatted email using AI

👥 Who's It For

Business professionals who need to write emails quickly
Customer support teams responding to inquiries
Sales teams crafting outreach messages
Anyone who wants help writing professional emails

🎯 How It Works

User fills out a form with email details and selects a tone
The workflow processes the input and creates an AI prompt
OpenAI generates a complete email based on the tone
The formatted email is displayed for the user to copy

⚙️ Setup Requirements

OpenAI API key (get one at https://platform.openai.com)
n8n instance (cloud or self-hosted)

🚀 How to Use

Set up your OpenAI credentials in the "OpenAI Chat Model" node
Activate the workflow
Share the form URL with users
Users fill out the form and receive a generated email instantly

🔧 Setup Steps

1. OpenAI API Key

Go to https://platform.openai.com/api-keys
Create a new API key
Add it to the "OpenAI Chat Model" node credentials

2. Customize Tones (Optional)

Edit the "Build AI Prompt" node
Modify the tone instructions to match your needs
Add new tones to the form dropdown

3. Adjust AI Settings (Optional)

In "OpenAI Chat Model" node:
Change model (gpt-4 for better quality)
Adjust temperature (0.5-0.9)
Modify max tokens for longer/shorter emails

4. Test the Workflow

Click "Test workflow" button
Fill out the form
Check the generated email

5. Share the Form

Activate the workflow
Copy the form URL
Share with your team or customers

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 - Email Generator Form

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

Block 2 - Extract Form Data

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

Block 3 - Build AI Prompt

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

Block 4 - OpenAI Chat Model

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

Block 5 - Generate Email

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 6 - Format Output

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

Block 7 - Display Generated Email

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

Block 8 - Main Description

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

Block 9 - Setup Instructions

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

Block 10 - Step 1

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

Block 11 - Step 2

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

Block 12 - Step 3

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

Block 13 - Step 4

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

Block 14 - Step 5

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

Block 15 - API Key Note

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

3. Summary Table

Workflow	Generate professional emails with custom tones using OpenAI GPT
Complexity	advanced
Nodes	15
Categories	Content Creation
Author	Biznova
Published	03 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/9225/9225.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 Content Creation workflows

Frequently asked questions

What does Generate professional emails with custom tones using OpenAI GPT do?

AI Email Generator with Tone Selection Made by [Biznova](https://www.biz...

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 Content Creation use case.

Biznova

2 workflows

Nodes

n8n-nodes-base.formtrigger n8n-nodes-base.set n8n-nodes-base.code @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.agent n8n-nodes-base.form n8n-nodes-base.stickynote

Complexity

advanced

Published 03 Oct 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/9225/9225.json

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Generate professional emails with custom tones using OpenAI GPT

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

AI Email Generator with Tone Selection

📧 What This Does

👥 Who's It For

🎯 How It Works

⚙️ Setup Requirements

🚀 How to Use

🔧 Setup Steps

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Email Generator Form

Block 2 - Extract Form Data

Block 3 - Build AI Prompt

Block 4 - OpenAI Chat Model

Block 5 - Generate Email

Block 6 - Format Output

Block 7 - Display Generated Email

Block 8 - Main Description

Block 9 - Setup Instructions

Block 10 - Step 1

Block 11 - Step 2

Block 12 - Step 3

Block 13 - Step 4

Block 14 - Step 5

Block 15 - API Key Note

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