📬 Email Notification System Integration

[mahid797]

📋 Overview

Implement a robust, provider-agnostic email notification system for both authentication and future transactional use cases (e.g., team invites, document views). The system must support multiple providers and be configurable through environment variables.

This initiative is broken into four sub-issues, starting from provider evaluation and ending with real-world email flows like document share alerts.

🧩 Sub-Issues

• Research & Select Email Provider #275
• Configure Email Credentials & Environment Setup #276
• Create Core Email Service Layer & Integrate Auth Email Flows  #277
• Add Support for Non-Auth Notification Emails #278

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🔄 Guidelines

• Code should use a shared emailService abstraction — no direct provider usage in feature logic.
• Email sending must be disabled by default in local/dev environments unless explicitly enabled.
• All templates must support dynamic values, fallback gracefully, and log failures.
• All implementation should align with modular design and Next.js 15 best practices.