WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT

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Important notice

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

1. Workflow Overview

️ Disclaimer: This workflow uses WhatsApp, Google Calendar, and Gmail nodes that must be configured manually. Who’s it for This workflow is built for professionals, teams, and automation enthusias...

Best for

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

Tools used

@n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatgooglegemini, @n8n/n8n-nodes-langchain.memorybufferwindow, n8n-nodes-base.gmailtool, n8n-nodes-base.googlecalendartool, n8n-nodes-base.datetimetool, n8n-nodes-base.stickynote, n8n-nodes-base.whatsapptrigger

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT
Workflow name: WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT

⚠️ Disclaimer: This workflow uses WhatsApp, Google Calendar, and Gmail nodes that must be configured manually.

Who’s it for

This workflow is built for professionals, teams, and automation enthusiasts who want to manage their Google Calendar and Gmail directly from WhatsApp, powered by an AI assistant using OpenAI GPT or Google Gemini. It enables users to chat naturally through WhatsApp to schedule meetings, send emails, and check events — all without opening Gmail or Google Calendar.

How it works

The WhatsApp Trigger node captures incoming messages from users.
The AI Agent (powered by Gemini or GPT) interprets user queries and determines the best tool to use.
The Simple Memory node keeps context between messages using the user’s phone number.
The Google Calendar nodes handle:
- Listing, creating, and updating events.
- Checking your availability before scheduling.
The Gmail nodes handle:
- Sending emails.
- Reading and summarizing recent messages.
The Date & Time node converts natural language like “next Monday at 3 PM” into proper ISO time format.
The assistant responds via Send WhatsApp Response, sending clear confirmations and replies.

Features

Manage Gmail and Calendar entirely via WhatsApp.
AI-powered understanding of natural language commands.
Integrated with Google Meet for automatic conferencing links.
Short-term memory for context retention.
Fully modular – swap Gemini with OpenAI GPT or any LLM.

Setup Steps

Configure WhatsApp Cloud API via Meta for Developers.
Set up Google Calendar and Gmail OAuth2 credentials.
Add your Google API keys and calendar email.
Connect your OpenAI or Gemini model credentials.
Activate and test the workflow with messages like:
- “Schedule a meeting tomorrow at 5 PM.”
- “Check my latest emails.”
- “Send an email to [email protected] about our project.”

Requirements

n8n instance (self-hosted or cloud)
WhatsApp Business API (Meta Developer Account)
Google Workspace or Gmail account
OpenAI API key or Google Gemini API key
Properly configured webhooks for WhatsApp Trigger

Example Prompts

“What’s on my calendar this week?”
“Email John to confirm our meeting.”
“When am I free tomorrow afternoon?”

Customization

Replace Gemini with OpenAI GPT in the AI Agent node.
Adjust memory length for longer or shorter conversations.
Add Slack or Teams notification nodes.
Modify the prompt personality or response tone.

Credits

Created by Praneel
For detailed setup help, visit praneel.tech/contact

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 - AI Agent

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

Block 2 - Google Gemini Chat Model

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

Block 3 - Simple Memory

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

Block 4 - Send a message in Gmail

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

Block 5 - Get many messages in Gmail

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

Block 6 - Get many events in Google Calendar

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

Block 7 - Date & Time

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

Block 8 - Get availability in a calendar in Google Calendar

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

Block 9 - Create an event in Google Calendar

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

Block 10 - Update an event in Google Calendar

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

Block 11 - Sticky Note

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

Block 12 - Sticky Note1

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

Block 13 - Sticky Note2

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

Block 14 - Sticky Note3

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

Block 15 - Sticky Note4

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

Block 16 - WhatsApp Trigger

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

Block 17 - Extract User Context

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

Block 18 - Send WhatsApp Response

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

Block 19 - Extract User Context Note

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

Block 20 - Send WhatsApp Response Note

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

Block 21 - Setup Instructions

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

Block 22 - Need Help?

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

3. Summary Table

Workflow	WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT
Complexity	advanced
Nodes	22
Categories	Support Chatbot, AI Chatbot
Author	Praneel S
Published	20 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/9931/9931.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 WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT 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.

Praneel S

4 workflows

Nodes

@n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatgooglegemini @n8n/n8n-nodes-langchain.memorybufferwindow n8n-nodes-base.gmailtool n8n-nodes-base.googlecalendartool n8n-nodes-base.datetimetool n8n-nodes-base.stickynote n8n-nodes-base.whatsapptrigger

Complexity

advanced

Published 20 Oct 2025

Likes 0

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Install path: /data/workflows/9931/9931.json

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WhatsApp AI assistant for Google Calendar & Gmail management with Gemini/GPT

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who’s it for

How it works

Features

Setup Steps

Requirements

Example Prompts

Customization

Credits

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - AI Agent

Block 2 - Google Gemini Chat Model

Block 3 - Simple Memory

Block 4 - Send a message in Gmail

Block 5 - Get many messages in Gmail

Block 6 - Get many events in Google Calendar

Block 7 - Date & Time

Block 8 - Get availability in a calendar in Google Calendar

Block 9 - Create an event in Google Calendar

Block 10 - Update an event in Google Calendar

Block 11 - Sticky Note

Block 12 - Sticky Note1

Block 13 - Sticky Note2

Block 14 - Sticky Note3

Block 15 - Sticky Note4

Block 16 - WhatsApp Trigger

Block 17 - Extract User Context

Block 18 - Send WhatsApp Response

Block 19 - Extract User Context Note

Block 20 - Send WhatsApp Response Note

Block 21 - Setup Instructions

Block 22 - Need Help?

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