Smart Invoice Collection with GPT-4.1, Gmail & Google Sheets

Automates overdue invoice follow-ups by monitoring Google Sheets, analyzing Gmail history with AI, and sending personalized escalating reminders to recover payments effortlessly.

This workflow builds an intelligent invoice collection system that automatically detects overdue invoices from a Google Sheets database, calculates days overdue, and triggers follow-ups at precise intervals (7, 14, 21, 28 days). It integrates Gmail to retrieve recent email conversations with clients, using GPT-4.1 to analyze communication patterns and avoid inappropriate timing, ensuring professional and relationship-preserving reminders. Key benefits include generating $10-15K annually in reco
Platform
n8n
Category
HR Management
Price
$24.99
Creator
Tomas Zielinski

How to import this workflow into n8n

  1. 1Purchase or download the workflow to get the n8n workflow JSON file.
  2. 2In your n8n instance, open Workflows and choose "Import from File" (or paste the JSON with Ctrl+V on the canvas).
  3. 3Open each node marked with a credential warning and connect your own accounts and API keys.
  4. 4Run the workflow once manually to verify the data flow, then toggle it to Active.

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