Automate Invoice Processing: OCR.Space, GPT-4, Drive to Gmail

Watches Google Drive for new invoices, extracts text via OCR.Space, uses GPT-4 to identify companies and match emails from Google Sheets, then sends via Gmail or alerts operator.

n8n
Automate Invoice Processing: OCR.Space, GPT-4, Drive to Gmail

This workflow automates invoice processing by monitoring a Google Drive folder for new scanned invoices. Upon detection, it downloads the file, performs OCR using OCR.Space to extract text, and employs a GPT-4 AI agent to parse the 'billed to' field for company names. The AI then cross-references these against a Google Sheets database to retrieve recipient emails.

If a match is found, the invoice is automatically emailed as an attachment to the correct recipient via Gmail. In cases of no match or errors, it sends an alert email to an operator for manual review, ensuring no invoice is lost.

Benefits include massive time savings for accounts payable teams, reduced errors in routing, and seamless integration of AI for intelligent data extraction. Ideal for businesses handling high volumes of vendor invoices, AP automation, or any scenario needing smart document routing without manual intervention.

$24.99
Last updated August 29, 2026
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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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