Task deadline reminders with Google Sheets, ChatGPT, and Gmail

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Important notice

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

1. Workflow Overview

Intro This template is for project managers , team leads , or anyone who wants to automatically remind teammates of tasks due today—no manual copy‑and‑paste required. How it works 1. Schedule Trigg...

Best for

Project Management automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.scheduletrigger, n8n-nodes-base.googlesheets, n8n-nodes-base.if, n8n-nodes-base.summarize, @n8n/n8n-nodes-langchain.openai, 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 Yar Malik (Asfandyar).

Original n8n.io source

1.1 Workflow description

Title: Task deadline reminders with Google Sheets, ChatGPT, and Gmail
Workflow name: Task deadline reminders with Google Sheets, ChatGPT, and Gmail

Intro

This template is for project managers, team leads, or anyone who wants to automatically remind teammates of tasks due today—no manual copy‑and‑paste required.

How it works

Schedule Trigger runs every morning at 8 AM.
Google Sheets node reads your “Tasks” sheet.
If node filters rows where Due Date = today.
Summarize (ChatGPT HTTP Request) generates a friendly reminder per person.
Message a model sends the prompt to your ChatGPT Assistant and returns the AI response.
Send a message (Gmail) emails each assignee their personalized reminder.

Required Google Sheet Structure

Column Name	Type	Example	Notes
Name	string	Alice Johnson	Person to remind
Email	string	[email protected]	Recipient email address
Task	string	Submit quarterly report	Task description
Due Date	date	2025‑07‑29	Format: YYYY‑MM‑DD

Detailed Setup Steps

Google Sheets
- Create your sheet with the columns above.
- In n8n → Credentials, add Google Sheets API (do not include real sheet IDs in the name).
ChatGPT Assistant
- In the OpenAI Dashboard → Assistants, click Create Assistant.
- Choose a model (e.g., gpt-4), copy the Assistant ID.
- In n8n → Credentials → OpenAI, add your API Key and Assistant ID.
Gmail
- In n8n → Credentials → Gmail (OAuth2 or SMTP), connect your account without embedding your real address in the credential name.
Import & Configure
- Export this workflow’s JSON (three‑dot menu → Export).
- Paste it under Template Code in the Creator form.
- In each node, select your Google Sheets, OpenAI, and Gmail credentials.
Sticky Notes
- A note on the Schedule node: “Set your desired run time.”
- A note on the ChatGPT node: “Customizes reminder text.”
- A note on the Gmail node: “Sends reminder email.”

Customization Guidance

Change schedule: edit the Cron expression in Schedule Trigger.
Adjust tone: modify the system prompt in your ChatGPT Assistant.
Email format: update Subject and Body in the Gmail node.
Batch processing: insert a SplitInBatches node before Summarize for large sheets.

Troubleshooting

Ensure your Google Sheet is shared with the connected service account.
Verify Due Date format (YYYY‑MM‑DD).
If ChatGPT fails, check your API key and quota.

Security & Best Practices

Do not hard‑code API keys, sheet IDs, or real emails.
Use n8n Credentials or environment variables only.
Remove any private information before submitting.

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 - Sticky Note

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

Block 2 - Schedule Trigger1

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

Block 3 - Get row(s) in sheet1

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.6

Block 4 - If1

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

Block 5 - Summarize1

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

Block 6 - Message a model1

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 7 - Send a message1

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

3. Summary Table

Workflow	Task deadline reminders with Google Sheets, ChatGPT, and Gmail
Complexity	intermediate
Nodes	7
Categories	Project Management, Multimodal AI
Author	Yar Malik (Asfandyar)
Published	23 Jul 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/6335/6335.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 Project Management workflows Multimodal AI workflows

Frequently asked questions

What does Task deadline reminders with Google Sheets, ChatGPT, and 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 Project Management, Multimodal AI use case.

Yar Malik (Asfandyar)

5 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.scheduletrigger n8n-nodes-base.googlesheets n8n-nodes-base.if n8n-nodes-base.summarize @n8n/n8n-nodes-langchain.openai n8n-nodes-base.gmail

Complexity

intermediate

Published 23 Jul 2025

Likes 0

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Install path: /data/workflows/6335/6335.json

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Task deadline reminders with Google Sheets, ChatGPT, and Gmail

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Intro

How it works

Required Google Sheet Structure

Detailed Setup Steps

Customization Guidance

Troubleshooting

Security & Best Practices

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Sticky Note

Block 2 - Schedule Trigger1

Block 3 - Get row(s) in sheet1

Block 4 - If1

Block 5 - Summarize1

Block 6 - Message a model1

Block 7 - Send a message1

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