Email subscription service with n8n forms, Airtable and AI

This n8n template shows how anyone can build a simple newsletter-like subscription service where users can enrol themselves to receive messages/content on a regular basis. It uses n8n forms for data capture, Airtable for database, AI for content generation and Gmail for email sending. How it works An n8n form is setup up to allow users to subscribe with a desired topic and interval of which to recieve messages via n8n forms which is then added to the Airtable. A scheduled trigger is executed every morning and searches for subscribers to send messages for based on their desired intervals. Once found, Subscribers are sent to a subworkflow which performs the text content generation via an AI ag

Help me set up the n8n workflow "Email subscription service with n8n forms, Airtable and AI" (https://n8n.io/workflows/2618). It uses: Airtable, Edit Image, Gmail, Code, AI Agent, Simple Memory, Wikipedia, OpenAI, Groq Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.