Overview

The Email Service handles all email-related functionality, from template rendering to delivery tracking.

Key Responsibilities

• Render email templates with dynamic content
• Send transactional emails (notifications, invites)
• Send digest emails (daily/weekly summaries)
• Track email opens and clicks
• Handle bounce and complaint management
• Manage email unsubscribe preferences

Technical Details

Technology Stack:

• Runtime: Python 3.11
• Framework: FastAPI
• Email Provider: SendGrid
• Template Engine: Jinja2
• Queue: AWS SQS
• Database: PostgreSQL (delivery tracking)

Email Types:

• Transactional: Task assignments, mentions, invites
• Digest: Daily/weekly activity summaries
• Marketing: Product updates, feature announcements
• System: Password resets, security alerts

SLA:

• Email Delivery: < 30 seconds
• Template Rendering: < 100ms
• Delivery Rate: > 99%