Turn YouTube Transcripts into Newsletter Drafts using Dumpling AI + GPT-4o

### 📨 YouTube → Newsletter Automation

This workflow turns YouTube videos into newsletter drafts using Dumpling AI and GPT-4o.

**Here’s what it does:**
1. Reads new YouTube video links from Google Sheets
2. Fetches the transcript of each video via Dumpling AI
3. Uses GPT-4o to generate a well-structured, email-friendly newsletter draft
4. Saves the draft back to Google Sheets next to the original video link
5. Sends an email notification when the newsletter is ready

🛠️ Tools Used:
- Dumpling AI (transcript)
- GPT-4o (newsletter copy)
- Google Sheets (input + output)
- Gmail (notification)

✅ Make sure your credentials are securely configured for:
- Google Sheets
- Dumpling AI (via header auth)
- OpenAI GPT
- Gmail OAuth2

🗒️ Sheet columns required:
- `link` (YouTube video URL)
- `blog post` (Newsletter output field)