Extract Email Tasks with Gmail, ChatGPT-4o and Supabase

📩 Gmail → GPT → Supabase | Task Extractor This n8n workflow automates the extraction of actionable tasks from unread Gmail messages using OpenAI's GPT API, stores the resulting task metadata in Supabase, and avoids re-processing previously handled emails. ✅ What It Does Triggers on a schedule to check for unread emails in your Gmail inbox. Loops through each email individually using SplitInBatches. Checks Supabase to see if the email has already been processed. If it's a new email: Formats the email content into a structured GPT prompt Calls ChatGPT-4o to extract structured task data Inserts the result into your emails table in Supabase 🧰 Prerequisites Before using this workflow, you must

Help me set up the n8n workflow "Extract Email Tasks with Gmail, ChatGPT-4o and Supabase" (https://n8n.io/workflows/5496). It uses: HTTP Request, Gmail, Supabase, Code, OpenAI. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.