Built an AI-powered email automation using n8n that reads incoming emails, processes the code inside them and sends back a fully documented response automatically. Here’s what happens under the hood: → Gmail Trigger detects a new email containing code → Two LLM chains (Groq Model) run in parallel one adds inline comments to the code, the other generates a plain English summary → The outputs are merged and aggregated into a single structured response → Edit Fields formats everything cleanly → A final LLM pass polishes the content → Gmail sends the documented code + summary back as a reply No manual review. No copy-pasting. Just structured, AI-generated documentation delivered straight to your inbox. Built with: n8n · Groq · LLMs · Gmail API