Email Support Agent w/ Gemini & GPT fallback using Gmail + Google Sheets

📧 Master Your First AI Email Agent with Smart Fallback! Welcome to your hands-on guide for building a resilient, intelligent email support system in n8n! This workflow is specifically designed as an educational tool to help you understand advanced AI automation concepts in a practical, easy-to-follow way. 🚀 What You'll Learn & Build: This powerful template enables you to create an automated email support agent that: Monitors Gmail for new customer inquiries in real-time. Processes requests using a primary AI model (Google Gemini) for efficiency. Intelligently falls back to a secondary AI model (OpenAI GPT) if the primary model fails or for more complex queries, ensuring robust reliability.

Help me set up the n8n workflow "Email Support Agent w/ Gemini & GPT fallback using Gmail + Google Sheets" (https://n8n.io/workflows/6287). It uses: Gmail, AI Agent, OpenAI Chat Model, Simple Memory, Google Gemini Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.