Automated birthday emails with Google Sheets, OpenRouter GPT-4o & 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 contains community nodes that are only compatible with the self hosted version of n8n. Send Automated Personalized Birthday Emails Using Google Sheets, OpenRouter AI, and Gmail Wha...

Best for

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

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.googlesheets, n8n-nodes-base.filter, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenrouter, n8n-nodes-base.gmail, @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 Parth Pansuriya.

Original n8n.io source

1.1 Workflow description

Title: Automated birthday emails with Google Sheets, OpenRouter GPT-4o & Gmail
Workflow name: Automated birthday emails with Google Sheets, OpenRouter GPT-4o & Gmail

This workflow contains community nodes that are only compatible with the self-hosted version of n8n.

Send Automated Personalized Birthday Emails Using Google Sheets, OpenRouter AI, and Gmail

🧠 What This Workflow Does

This workflow sends personalized birthday greetings via email every morning using data from Google Sheets and messages generated with AI. It’s great for communities, schools, small businesses, or anyone who wants to automate meaningful connections.

⚙️ Features

🗓 Daily Birthday Check — Runs every day at 9 AM 📋 Google Sheets Integration — Reads user data: Name, Email, DOB 🔍 Smart Date Matching — Extracts day & month from DOB to match today’s date 🤖 OpenRouter AI Integration — Generates a custom subject + email message 🛠 Function Node Cleanup — Separates AI response into subject & body 📬 Gmail Node — Sends personalized birthday wishes instantly

🔧 Tech Stack

Google Sheets
OpenRouter (or OpenAI-compatible model)
Gmail

💡 Use Cases

Educators sending birthday emails to students
Team leads acknowledging team members’ birthdays
Freelancers staying in touch with clients
1Coaches or mentors maintaining personal rapport

📝 Requirements

Google Sheet with columns: Name, DOB (DD/MM/YYYY), and Email
Gmail account with OAuth2 connected
OpenRouter (or OpenAI) API key
Basic understanding of n8n nodes

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 - Schedule Trigger

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

Block 2 - Get row(s) in sheet

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

Block 3 - Filter

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

Block 4 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2

Block 5 - OpenRouter Chat Model

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

Block 6 - Send a message

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

Block 7 - Structured Output Parser

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

3. Summary Table

Workflow	Automated birthday emails with Google Sheets, OpenRouter GPT-4o & Gmail
Complexity	intermediate
Nodes	7
Categories	Personal Productivity, Multimodal AI
Author	Parth Pansuriya
Published	20 Jul 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/6201/6201.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 Automated birthday emails with Google Sheets, OpenRouter GPT-4o & Gmail do?

This workflow contains community nodes that are only compatible with the self hosted version of n8n. Send Automated Personalized Birthday Emails Using Google Sheets, OpenRouter AI, and Gmail Wha...

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.

Parth Pansuriya

9 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.googlesheets n8n-nodes-base.filter @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenrouter n8n-nodes-base.gmail @n8n/n8n-nodes-langchain.outputparserstructured

Complexity

intermediate

Published 20 Jul 2025

Likes 0

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Install path: /data/workflows/6201/6201.json

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Automated birthday emails with Google Sheets, OpenRouter GPT-4o & Gmail

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

🧠 What This Workflow Does

⚙️ Features

🔧 Tech Stack

💡 Use Cases

📝 Requirements

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Schedule Trigger

Block 2 - Get row(s) in sheet

Block 3 - Filter

Block 4 - AI Agent

Block 5 - OpenRouter Chat Model

Block 6 - Send a message

Block 7 - Structured Output Parser

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