Complete implementation of newsletter sending system with SendGrid integration:
Backend Implementation:
- EmailService class with template rendering (Handlebars)
- sendNewsletter() method with subscriber iteration
- Preview and send controller methods
- Admin routes with CSRF protection and authentication
- findByInterest() method in NewsletterSubscription model
Frontend Implementation:
- Newsletter send form with validation
- Preview functionality (opens in new window)
- Test send to single email
- Production send to all tier subscribers
- Real-time status updates
Dependencies:
- handlebars (template engine)
- @sendgrid/mail (email delivery)
- html-to-text (plain text generation)
Security:
- Admin-only routes with authentication
- CSRF protection on all POST endpoints
- Input validation and sanitization
- Confirmation dialogs for production sends
Next steps: Configure SendGrid API key in environment variables
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Root cause: MongoDB ObjectId objects were being sent to frontend as-is,
which JSON.stringify converts to '[object Object]' string in data attributes.
Fix: Convert _id to string on server-side before sending to client.
This is the actual fix - previous attempts were client-side workarounds.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Create Economist SubmissionTracking package correctly:
* mainArticle = full blog post content
* coverLetter = 216-word SIR— letter
* Links to blog post via blogPostId
- Archive 'Letter to The Economist' from blog posts (it's the cover letter)
- Fix date display on article cards (use published_at)
- Target publication already displaying via blue badge
Database changes:
- Make blogPostId optional in SubmissionTracking model
- Economist package ID: 68fa85ae49d4900e7f2ecd83
- Le Monde package ID: 68fa2abd2e6acd5691932150
Next: Enhanced modal with tabs, validation, export
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
