Invoice Reminder Bot

Automated overdue invoice follow-up powered by n8n and AI. Reads your Google Sheet of invoices, identifies past-due accounts, drafts personalized reminder emails, and sends them automatically every week.

n8n Google Sheets AI Gmail
Invoice Reminder Bot Workflow
7
Workflow Steps
Weekly
Schedule
AI
Powered
Auto
Follow-Up

Key Features

A complete automated pipeline from invoice tracking to personalized email reminders

Weekly Schedule

Triggers every week automatically — no manual intervention needed. The workflow runs on a reliable schedule so you never miss a follow-up.

📋

Invoice Reader

Pulls invoice data directly from your Google Sheet. Reads client names, amounts, due dates, and contact info in real time.

🔍

Overdue Filter

Intelligently identifies past-due invoices by comparing due dates to today. Only overdue accounts enter the reminder pipeline.

🤖

AI Reminder Draft

Creates personalized follow-up emails tailored to each client. AI considers invoice amount, days overdue, and client history.

📧

Auto Send

Sends reminders directly via Gmail integration. Professional, personalized emails go out without any manual clicks.

📊

Owner Report

Weekly summary of overdue activity sent to you. Know exactly which invoices were followed up and their current status.

Tech Stack

Built with n8n and integrated services for a seamless automation pipeline

n8n
Workflow automation platform
Schedule Trigger
Weekly automated workflow start
AI / LLM
Personalized email drafting
Google Sheets
Invoice data source
Gmail
Automated email delivery
// Invoice Reminder Workflow 1. Schedule Trigger // Every Monday 9am 2. Google Sheets // Read invoice data 3. Filter // Due date < today 4. AI Agent // Draft reminder email 5. Gmail Send // Deliver to client 6. Aggregate // Compile summary 7. Gmail Send // Owner report

How It Works

Four-step automated pipeline from trigger to delivery

1

Weekly Trigger

The workflow fires automatically every week on a set schedule.

2

Check Invoices

Reads all invoices from your connected Google Sheet.

3

Find Overdue

Filters for past-due invoices and AI drafts personalized reminders.

4

AI Draft & Send

Sends reminder emails via Gmail and delivers a summary report.

Stop Chasing Invoices Manually

Let automation handle your overdue follow-ups so you can focus on growing your business.