UTM marketing attribution reports with Google Sheets, 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

Description Turn raw marketing data into actionable insights with this n8n Source/UTM Attribution and Reporting workflow! It automatically aggregates lead submissions, calculates Cost Per Lead (CPL...

Best for

Market Research automation workflows
AI Summarization automation workflows
intermediate n8n builders looking for reusable templates

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.gmail, n8n-nodes-base.googlesheets, @n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.lmchatazureopenai, n8n-nodes-base.code, 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 Rahul Joshi.

Original n8n.io source

1.1 Workflow description

Title: UTM marketing attribution reports with Google Sheets, GPT-4o & Gmail
Workflow name: UTM marketing attribution reports with Google Sheets, GPT-4o & Gmail

Description

Turn raw marketing data into actionable insights with this n8n Source/UTM Attribution and Reporting workflow! It automatically aggregates lead submissions, calculates Cost Per Lead (CPL) per channel, and generates AI-powered weekly attribution reports—delivered straight to your inbox in a professional HTML format.

What This Template Does

📅 Runs hourly to process new lead submissions 📊 Aggregates leads by source (Instagram, LinkedIn, Google Ads, etc.) 💰 Calculates key metrics like Cost Per Lead (CPL) 🧠 Uses AI to generate executive-ready HTML reports 📈 Highlights top-performing sources and growth opportunities 📧 Sends polished reports via Gmail automatically

Prerequisites

Google Sheets with lead submission data
Google Forms (or similar) as the data input source
n8n instance (self-hosted or cloud)
Azure OpenAI (GPT-4o-mini) API key for AI-powered reporting
Gmail API credentials for automated report delivery

Step-by-Step Setup

Trigger workflow hourly with n8n Scheduler.
Fetch new lead submissions from Google Sheets.
Aggregate and group data by Source/UTM parameters.
Calculate CPL using spend + lead count per channel.
Standardize column names for consistent reporting.
Send raw + aggregated data to Azure OpenAI for report generation.
Format into a professional HTML report (with insights & recommendations).
Send report via Gmail node to stakeholders.

Customization Ideas

Replace Gmail with Slack/Teams notifications for real-time sharing.
Add visual charts (Google Data Studio / Looker) for more analytics.
Use additional UTM fields (campaign, adgroup, creative) for deeper granularity.
Extend reporting to include ROI and ROAS calculations.

Key Benefits

✅ Hands-free attribution tracking and analysis ✅ Accurate CPL metrics per channel ✅ AI-generated reports with actionable insights ✅ Saves time vs. manual data crunching ✅ Weekly reports ensure marketing strategy stays optimized

Perfect For

Marketing teams managing multi-channel campaigns
Agencies providing client attribution reports
Business owners optimizing ad spend efficiency
Growth teams tracking lead quality by source

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 1.1

Block 2 - Send Follow-up Email1

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

Block 3 - Get row(s) in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4

Block 4 - Basic LLM Chain

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.7

Block 5 - Azure OpenAI Chat Model1

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

Block 6 - Code

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

Block 7 - Code1

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

Block 8 - Sticky Note

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

Block 9 - Sticky Note1

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

Block 10 - Sticky Note2

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

Block 11 - Sticky Note3

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

Block 12 - Sticky Note4

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

Block 13 - Sticky Note5

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

Block 14 - Sticky Note6

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

3. Summary Table

Workflow	UTM marketing attribution reports with Google Sheets, GPT-4o & Gmail
Complexity	intermediate
Nodes	14
Categories	Market Research, AI Summarization
Author	Rahul Joshi
Published	12 Sept 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8513/8513.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 Market Research workflows AI Summarization workflows

Frequently asked questions

What does UTM marketing attribution reports with Google Sheets, GPT-4o & 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 Market Research, AI Summarization use case.

Rahul Joshi

269 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.gmail n8n-nodes-base.googlesheets @n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.lmchatazureopenai n8n-nodes-base.code n8n-nodes-base.stickynote

Complexity

intermediate

Published 12 Sept 2025

Likes 0

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Install path: /data/workflows/8513/8513.json

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UTM marketing attribution reports with Google Sheets, GPT-4o & Gmail

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Schedule Trigger

Block 2 - Send Follow-up Email1

Block 3 - Get row(s) in sheet

Block 4 - Basic LLM Chain

Block 5 - Azure OpenAI Chat Model1

Block 6 - Code

Block 7 - Code1

Block 8 - Sticky Note

Block 9 - Sticky Note1

Block 10 - Sticky Note2

Block 11 - Sticky Note3

Block 12 - Sticky Note4

Block 13 - Sticky Note5

Block 14 - Sticky Note6

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