Newsletter Subscription API

[hman38705]

Backend Issue #2:

Title: Implement Newsletter Subscription Endpoint

Description:
Create an API endpoint to handle newsletter subscriptions with email validation and integration with email service provider.

Requirements:

• POST /api/v1/newsletter/subscribe endpoint
• Email validation (format, disposable email check)
• Store subscriptions in database
• Integrate with email service (SendGrid, Mailchimp, or similar)
• Send confirmation email
• Implement double opt-in flow
• Handle duplicate subscriptions gracefully
• Add unsubscribe endpoint
• Implement GDPR compliance (data export, deletion)
• Add rate limiting per IP
• Log subscription events

Acceptance Criteria:

• Endpoint validates email correctly
• Subscriptions stored in database
• Confirmation emails sent
• Duplicate handling works
• Rate limiting prevents abuse
• GDPR endpoints functional

Technical Notes:
typescript
POST /api/v1/newsletter/subscribe
Body: { email: string, source?: string }
Response: { success: boolean, message: string }
[ ] git checkout -b features/issue-2-Newsletter Subscription API

• Pr Request create your pr against develop branch

Labels: backend, api, newsletter, high-priority

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