Extract invoice data from Gmail PDFs to Google Sheets with human review
UnknownUnknown. This template uses community nodes we can't verify statically. Uses community nodes that can't be verified statically (unverified community packages are off by default in 3.0). Static check, last run 2026-10-19.
What this workflow does
This workflow has 6 nodes and runs on Gmail events. Along the way it connects Gmail, Google Sheets and Cradlai (community).
How it runs
Trigger: On Gmail events.
- Filter PDF attachments (Code): runs custom JavaScript code
- Mark a message as read (Gmail): mark as read
- Extract invoice details with AI (Cradl Ai): uses Cradl Ai
- Split Out: splits a list into separate items
- Add invoice line to Google Sheets (Google Sheets): append
Services it uses
Before you upgrade to n8n 3.0
We can't fully verify this one: it relies on 1 community package, and n8n 3.0 turns unverified community packages off by default (N8N_UNVERIFIED_PACKAGES_ENABLED=false).
- Check that @cradl/n8n-nodes-cradlai is verified or supports 3.0 (used in Extract invoice details with AI).
- Also check Gmail Trigger below v1.4 runs as v1.4 (drafts skipped, max emails per poll).
Nodes used (6)
- Gmail Trigger
n8n-nodes-base.gmailTrigger - Code
n8n-nodes-base.code - Google Sheets
n8n-nodes-base.googleSheets - Gmail
n8n-nodes-base.gmail - Cradl Ai
@cradl/n8n-nodes-cradlai.cradlAi - Split Out
n8n-nodes-base.splitOut
From the author
This workflow processes invoices (PDFs and images) using Cradl AI’s all-in-one document processing capabilities, including LLM-powered data extraction, validation, human-in-the-loop review, and RAG-powered learning to improve accuracy over time — all within a…