Automate YouTube to Email Newsletters with GPT-4o-mini & n8n

Transform Your YouTube Content into Professional Email Newsletters Automatically

Turn your YouTube videos into complete newsletter drafts every Monday morning without lifting a finger. This n8n workflow automatically processes YouTube URLs from your Google Sheet, uses AI-powered video summarization, and generates publication-ready newsletter content with GPT-4o-mini — giving content creators and marketing teams a fully formatted newsletter draft waiting in their inbox each week.

What This Workflow Does

• Smart weekly automation: Runs every Monday at 7AM and gracefully exits if no videos are queued — no errors on empty weeks
• AI-powered video analysis: WayinVideo API extracts structured summaries, numbered highlights, and tags from each YouTube video URL
• Complete newsletter generation: GPT-4o-mini transforms video summaries into full newsletter drafts including subject lines, preview text, hook intros, three H2 content sections, featured quotes, CTA button text, and hashtags
• Automatic organization: Each draft receives a calculated week-number issue label (e.g., "Issue #18 — 2025") and gets saved to your Newsletter Drafts tab
• Queue management: Processed videos are automatically marked as "Processed" in your Video Queue to prevent duplicate newsletters

Perfect Use Cases

• Content creators who publish regular YouTube videos and want to repurpose content for email subscribers
• Media brands looking to automate newsletter production from video content libraries
• Marketing teams needing consistent email campaigns based on YouTube video releases
• Newsletter writers who want AI assistance transforming video content into engaging written formats

Technical Details

Built with essential n8n nodes including HTTP Request for WayinVideo and GPT-4o-mini API calls, Google Sheets integration for queue management and draft storage, conditional IF logic for empty queue handling, Code nodes for week number calculations, Wait nodes for API rate limiting, and Sticky Notes for workflow documentation. All content is formatted in clean Markdown for easy copying into any email platform.