This template sets up a fully automated factoid email subscription service using n8n forms, Airtable, Gmail, and AI integrations.
Users can subscribe to receive interesting factoids about their chosen topic on a daily, weekly, or surprise schedule. The workflow handles subscriptions, unsubscriptions, automated content generation (text + image), and delivery.
It’s a great example of combining AI-generated content, email automation, and user self-service flows into one workflow.
Features
- 📝 Subscribe Flow – n8n Form for users to choose their topic, frequency (daily, weekly, surprise), and email.
- 📩 Confirmation Email – Sends a confirmation message after subscribing.
- ❌ Unsubscribe Flow – Easy form-based opt-out with reason tracking (not just by email, but unique ID-based for security).
- ⏰ Scheduled Sending – Runs daily at 9 AM to check for active subscribers across all intervals.
- ⚡ Concurrent Execution – Uses subworkflows to handle multiple subscribers in parallel.
- 🤖 AI Factoid Generation – Uses Groq LLM + Wikipedia for fact creation, ensuring uniqueness.
- 🎨 AI Image Creation – Generates a child-friendly illustration for each factoid, resized for email delivery.
- 📊 Airtable Integration – Stores subscriber details, tracks last sent, and updates statuses.
- 📧 Email Delivery – Sends engaging HTML emails with factoid text, image, and unsubscribe link.
- 🗂️ Logging – Updates Airtable with “last sent” timestamp for reliable scheduling.
