Automatic email invoice archiving & data extraction with Gmail, Drive & AI

Quick overview Automatically collect invoice PDFs from Gmail, archive them in Google Drive or an optional FTP/SFTP server, extract structured invoice data with AI, and record the results in Google Sheets. How it works Scheduled inbox check — A Schedule Trigger periodically checks Gmail for invoice messages matching the configured sender and attachment filters. Invoice download — Gmail nodes retrieve the matching message and download its PDF attachment. Document archiving — The PDF is uploaded to Google Drive and can optionally be copied to an FTP/SFTP server. Text extraction — n8n extracts text from text-based PDFs for AI processing without requiring OCR. AI extraction — An OpenRouter-backed

Help me set up the n8n workflow "Automatic email invoice archiving & data extraction with Gmail, Drive & AI" (https://n8n.io/workflows/10923). It uses: Google Sheets, HTTP Request, Google Drive, FTP, Gmail, Code, AI Agent, OpenRouter Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.