Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack

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Important notice

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

1. Workflow Overview

Who this workflow is for Accounting and bookkeeping firms needing automated invoice creation and payment reminders. What this workflow does AI generates personalized emails for overdue invoices, lo...

Best for

Invoice Processing automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.stripetrigger, n8n-nodes-base.set, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.switch, n8n-nodes-base.googlesheets, n8n-nodes-base.slack

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack
Workflow name: Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack

Who this workflow is for

Accounting and bookkeeping firms needing automated invoice creation and payment reminders.

What this workflow does

AI generates personalized emails for overdue invoices, logs invoice info in Google Sheets, notifies accountants via Slack, creates PDF invoices, and schedules follow-ups.

How the workflow works

Invoice creation triggers workflow
AI drafts personalized email
Routes based on payment status
Logs invoice info in Google Sheets
Sends Slack notifications to accountant
Sends email to client
Generates PDF invoice
Schedules follow-up events
Optional CRM/accounting tool integration

Author: Hyrum Hurst, AI Automation Engineer
Company: QuarterSmart
Contact: [email protected]

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 - Stripe Invoice Trigger

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

Block 2 - Workflow Configuration

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

Block 3 - Normalize Invoice Data

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

Block 4 - Generate Payment Reminder

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3

Block 5 - OpenAI Chat Model

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

Block 6 - Structured Output Parser

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

Block 7 - Route by Payment Status

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

Block 8 - Log to Google Sheets

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 9 - Notify Accountant on Slack

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.4

Block 10 - Send Reminder Email

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

Block 11 - Generate Invoice PDF

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

Block 12 - Schedule Follow-up

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

Block 13 - CRM Integration

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 14 - Sticky Note

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

Block 15 - Sticky Note1

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

Block 16 - Sticky Note2

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

Block 17 - Sticky Note3

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

3. Summary Table

Workflow	Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack
Complexity	advanced
Nodes	17
Categories	Invoice Processing, AI Summarization
Author	Hyrum Hurst
Published	15 Jan 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12741/12741.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 Invoice Processing workflows AI Summarization workflows

Frequently asked questions

What does Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack 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 Invoice Processing, AI Summarization use case.

Hyrum Hurst

25 workflows

Nodes

n8n-nodes-base.stripetrigger n8n-nodes-base.set @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.switch n8n-nodes-base.googlesheets n8n-nodes-base.slack

Complexity

advanced

Published 15 Jan 2026

Likes 0

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Install path: /data/workflows/12741/12741.json

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Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Who this workflow is for

What this workflow does

How the workflow works

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Stripe Invoice Trigger

Block 2 - Workflow Configuration

Block 3 - Normalize Invoice Data

Block 4 - Generate Payment Reminder

Block 5 - OpenAI Chat Model

Block 6 - Structured Output Parser

Block 7 - Route by Payment Status

Block 8 - Log to Google Sheets

Block 9 - Notify Accountant on Slack

Block 10 - Send Reminder Email

Block 11 - Generate Invoice PDF

Block 12 - Schedule Follow-up

Block 13 - CRM Integration

Block 14 - Sticky Note

Block 15 - Sticky Note1

Block 16 - Sticky Note2

Block 17 - Sticky Note3

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