Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack — n8n Workflow

Medium complexity⚡ Trigger13 nodes🏷️ Invoice Processingby Hyrum Hurst

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, 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 accou

Nodes used

Send EmailGoogle SheetsHTTP RequestSlackGoogle CalendarAI AgentOpenAI Chat ModelStructured Output Parser

Workflow Preview

modelparser
⚡
S
Stripe Invoice Trigger
W
Workflow Configuration
N
Normalize Invoice Data
Generate Payment Reminder
OpenAI Chat Model
Structured Output Parser
R
Route by Payment Status
Log to Google Sheets
Notify Accountant on Slack
Send Reminder Email
G
Generate Invoice PDF
Schedule Follow-up
CRM Integration
13 nodes12 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a trigger trigger.

  2. 2

    Process

    Data flows through 13 nodes, connecting agent, converttofile, emailsend.

  3. 3

    Output

    The workflow completes its automation and delivers the result to the configured destination.

Node Details (13)

SE

Send Email

emailSend

#1
GO

Google Sheets

googleSheets

#2
HT

HTTP Request

httpRequest

#3
SL

Slack

slack

#4
GO

Google Calendar

googleCalendar

#5
AI

AI Agent

n8n-nodes-langchain.agent

#6
OP

OpenAI Chat Model

n8n-nodes-langchain.lmChatOpenAi

#7
ST

Structured Output Parser

n8n-nodes-langchain.outputParserStructured

#8

How to Import This Workflow

  1. 1Click Download JSON button on the right to save the workflow file.
  2. 2Open your n8n instance. Go to Workflows → New → Import from file.
  3. 3Select the downloaded send-stripe-invoice-reminders-with-gpt-41-mini-google-sheets-and-slack file and click Import.
  4. 4Set up credentials for each service node (API keys, OAuth, etc.).
  5. 5Click Test Workflow to verify everything works, then activate it.

Or paste directly in n8n → Import from JSON:

{ "name": "Send Stripe invoice reminders with GPT-4.1-mini, Google Sheets and Slack", "nodes": [...], ...}

Integrations

agentconverttofileemailsendgooglecalendargooglesheetshttprequestlmchatopenaioutputparserstructuredsetslackstripetriggerswitch

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes13
Complexitymedium
Triggertrigger
CategoryInvoice Processing

Created by

Hyrum Hurst

Hyrum Hurst

@hyrum-hurst

Tags

agentconverttofileemailsendgooglecalendargooglesheetshttprequestlmchatopenaioutputparserstructuredsetslack
⚡

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Automate Custom QuickBooks Invoice PDFs & Email with n8n

Standard accounting templates often fail to reflect a premium brand identity. This sophisticated n8n workflow bridges the gap between financial record-keeping and professional client presentation. By moving beyond the native limitations of QuickBooks Online, this automation enables businesses to generate high-end, multi-page PDF invoices that align perfectly with their corporate styling. The process begins the moment a new invoice is generated in QuickBooks, triggering a webhook that captures real-time billing data. The workflow then utilizes advanced HTML-to-File conversion and custom Code nodes to structure data into a polished, branded layout. It handles complex logic such as line-item merging and multi-page formatting automatically. Once the document is rendered, the system bypasses generic 'no-reply' senders by routing the finalized PDF through your preferred email provider. This ensures a seamless, white-labeled experience for your clients while eliminating the manual overhead of exporting, styling, and attaching files. Ideal for agencies and service providers, this flow guarantees that your most frequent touchpoint—the bill—is as professional as your work. **Common Use Cases:** - High-end creative agencies requiring bespoke, white-labeled billing documents for premium clients. - Automated recurring subscription billing where custom tax disclosures or localized branding are required. - Service-based businesses needing to attach dynamic project reports or terms of service directly to QuickBooks invoices.

🔗 Webhook·12 nodes