Extract, validate, and log email invoices from Gmail to Google Sheets with GPT-4

About

Inbox2Ledger is an end-to-end n8n template that turns a noisy finance inbox into a clean, structured ledger. It fetches emails, uses AI guardrails to keep only finance-relevant messages, extracts invoice/receipt fields via an OCR-style agent, validates and auto-categorizes each expense, generates a unique case ID, and appends the result to a Google Sheet for accounting or downstream automations. Key Features Trigger*: Form submission or scheduled fetch (sample *On form submission node included