Invoice Creator with Google Sheets & Automated Email Payment Reminder System — n8n Workflow

High complexity Scheduled17 nodes🏷️ Invoice Processingby Oneclick AI Squad

Overview

This automated n8n workflow streamlines invoice creation and payment reminders. It generates invoices on a monthly schedule and sends reminders for overdue payments, updating records in Google Sheets.

Good to Know Supports monthly invoice generation and daily overdue checks Integrates with Google Sheets for data management Uses email notifications for invoice delivery and reminders Includes logging for tracking and auditing Features multiple reminder types based on overdue duration

How It Work

Nodes used

Send EmailGoogle SheetsCode

Workflow Preview

Invoice Creation Flow
Monthly Invoice Trigger – Triggers workflow on a set mo
Get Clients for Invoicing – Reads client data from Goog
Filter Active Clients –
Reminder Flow
Daily Payment Reminder Check – Triggers workflow daily
Get Overdue Invoices – Reads overdue invoices from Goog
Filter Overdue Invoic
M
Monthly Invoice Trigger
D
Daily Payment Reminder C…
Get Clients for Invoicing
Get Overdue Invoices
Filter Active Clients
Filter Overdue Invoices
Generate Invoice Data
Save Invoice to Google S…
Send Invoice Email
Calculate Reminder Type
S
Switch Reminder Type
Send Gentle Reminder
Send Follow-up Reminder
Send Urgent Reminder
Send Final Notice
Update Reminder Log
Log Invoice Creation
17 nodes18 edges

How it Works

  1. 1

    Trigger

    The workflow starts with a scheduled trigger, running on a defined schedule.

  2. 2

    Process

    Data flows through 17 nodes, connecting code, cron, emailsend.

  3. 3

    Output

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

Node Details (17)

SE

Send Email

emailSend

#1
GO

Google Sheets

googleSheets

#2
CO

Code

code

#3

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 invoice-creator-with-google-sheets-automated-email-payment-reminder-system 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": "Invoice Creator with Google Sheets & Automated Email Payment Reminder System", "nodes": [...], ...}

Integrations

codecronemailsendgooglesheetsswitch

Get This Workflow

Download and import in one click

Download JSONView on n8n.io
Nodes17
Complexityhigh
Triggerscheduled

Created by

Oneclick AI Squad

Oneclick AI Squad

@oneclick-ai

Tags

codecronemailsendgooglesheetsswitch

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