Classify Emails and Send Replies with GPT-4o and gotoHuman for Supervision

Let AI classify your incoming emails and draft replies. Use gotoHuman to approve emails before they are sent out. It also lets you manually edit the draft or even ask for a retry. How it works The workflow is triggered for each new email which gets passed to an AI classification agent. It assigns the email to one of the categories defined in the prompt (Customer Support, Sales opportunity, Promo, Personal,...). The agent also determines whether a reply is needed and if it is important. If a reply is needed, we ask the AI Email Writer to draft a response. Even if it is missing context it can help us draft an outline for the response. The email draft is sent to gotoHuman where the reviewer can

Help me set up the n8n workflow "Classify Emails and Send Replies with GPT-4o and gotoHuman for Supervision" (https://n8n.io/workflows/7301). It uses: Gmail, AI Agent, OpenAI Chat Model, Structured Output Parser. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.