Voice-to-email response system with Telegram, OpenAI Whisper & Gmail

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Important notice

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

1. Workflow Overview

This workflow gives you the ability to reply to a long email with a voice note, rather than having to type everything out. ChatGPT will format your audio response and create an email draft for you....

Best for

Personal Productivity automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.outputparserstructured, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.telegram, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.gmailtrigger, n8n-nodes-base.if, n8n-nodes-base.telegramtrigger, n8n-nodes-base.gmail

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Voice-to-email response system with Telegram, OpenAI Whisper & Gmail
Workflow name: Voice-to-email response system with Telegram, OpenAI Whisper & Gmail

This workflow gives you the ability to reply to a long email with a voice note, rather than having to type everything out.

ChatGPT will format your audio response and create an email draft for you.

How it works

When a new email arrives in your inbox, the workflow checks if it needs a response, and it it does, it sends a message to you on Telegram via a VoiceEmailer bot.

When you reply to that message with an audio message, the second part of this workflow is triggered. It checks if the message is in the right format, transcribes the audio, and creates a draft response that shows up in the same email thread.

Set up steps

Add your credentials for Gmail and OpenAI
Create an Telegram bot following the instructions here.
Connect your telegram credentials so the workflow will use your bot.
Turn on the workflow, and message the bot from your telegram. Find the Chat ID from the Executions tab of your workflow, and enter it in as a variable.

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 - Structured Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.2

Block 2 - OpenAI Chat Model

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

Block 3 - Text Email

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 4 - OpenAI

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.5

Block 5 - New Email Received

Type / Role: n8n-nodes-base.gmailTrigger - gmailTrigger
Config choices: Version 1.1

Block 6 - In the Inbox?

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

Block 7 - Needs a response?

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

Block 8 - Telegram Bot Message Received

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.1

Block 9 - It needs to be an audio message + a reply!

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 10 - Get Audio File

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 11 - Create Email Draft

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

Block 12 - Direct to Draft

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

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 - Does Email Need a Response?

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

Block 16 - Sticky Note1

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

Block 17 - Is Type Audio Message + Reply?

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

Block 18 - Sticky Note5

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

Block 19 - Sticky Note6

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

Block 20 - OpenAI Chat Model1

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

Block 21 - Write Polished Reply

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

Block 22 - Sticky Note7

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

Block 23 - Set Chat ID

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

Block 24 - Sticky Note2

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

3. Summary Table

Workflow	Voice-to-email response system with Telegram, OpenAI Whisper & Gmail
Complexity	advanced
Nodes	24
Categories	Personal Productivity, Multimodal AI
Author	Adam Janes
Published	08 May 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/3930/3930.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 Personal Productivity workflows Multimodal AI workflows

Frequently asked questions

What does Voice-to-email response system with Telegram, OpenAI Whisper & Gmail 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 Personal Productivity, Multimodal AI use case.

Adam Janes

6 workflows

Nodes

@n8n/n8n-nodes-langchain.outputparserstructured @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.telegram @n8n/n8n-nodes-langchain.openai n8n-nodes-base.gmailtrigger n8n-nodes-base.if n8n-nodes-base.telegramtrigger n8n-nodes-base.gmail

Complexity

advanced

Published 08 May 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/3930/3930.json

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Voice-to-email response system with Telegram, OpenAI Whisper & Gmail

Workflow preview

Important notice

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 - Structured Output Parser

Block 2 - OpenAI Chat Model

Block 3 - Text Email

Block 4 - OpenAI

Block 5 - New Email Received

Block 6 - In the Inbox?

Block 7 - Needs a response?

Block 8 - Telegram Bot Message Received

Block 9 - It needs to be an audio message + a reply!

Block 10 - Get Audio File

Block 11 - Create Email Draft

Block 12 - Direct to Draft

Block 13 - Sticky Note4

Block 14 - Sticky Note

Block 15 - Does Email Need a Response?

Block 16 - Sticky Note1

Block 17 - Is Type Audio Message + Reply?

Block 18 - Sticky Note5

Block 19 - Sticky Note6

Block 20 - OpenAI Chat Model1

Block 21 - Write Polished Reply

Block 22 - Sticky Note7

Block 23 - Set Chat ID

Block 24 - Sticky Note2

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