Receipt Inbox

Receipt Inbox is an n8n workflow solution that automatically extracts receipt information from Gmail PDFs and populates Google Sheets. It polls Gmail for SaaS and vendor receipts, extracts merchant name, amount, and date using regex-based extraction, and stores the PDFs in Google Drive for easy reference.

The tool is designed for freelancers and small agencies who manage expenses through Gmail and Google Sheets rather than dedicated expense software. It features confidence-based validation—extractions below 70% confidence are flagged as "needs_review" and trigger a Slack notification for human verification. The solution operates entirely through workflow automation without requiring LLM processing.

Receipt Inbox is ideal for teams seeking a lightweight, privacy-conscious alternative to expense management platforms. It integrates with Gmail, Google Sheets, Google Drive, and Slack, never accessing bank accounts or contacting merchants.