Extract invoice data from PDFs with AI - Google Sheets Email alerts

Built by Setidure Technologies This smart n8n automation extracts invoice details from PDF files uploaded to Google Drive using AI, logs them to a Google Sheet, and notifies the billing team via email — all without manual intervention.

⚠️ Note: This workflow requires a self-hosted n8n instance with LangChain, LLM, and Google integrations configured.

📦 What This Workflow Does Monitors a Google Drive folder for new invoice uploads

Extracts text and parses key invoice details using LLM via LangChain

Logs extracted data into a Google Sheet (Invoice Database)

Generates a summary email using GPT-4O-MINI (Greenie)

Sends the email to the billing team via Gmail

✅ Prerequisites A Google Drive folder to monitor for PDF uploads