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Cerebro Mail

A high-performance, scalable email delivery platform designed for bulk emails, newsletters, and marketing campaigns.

Overview

Cerebro Mail is a modern email platform built with Go, providing advanced features for sending, tracking, and optimizing email campaigns. This platform is designed as a SaaS solution with multi-tenant support, allowing teams to collaborate on email campaigns with powerful analytics.

Architecture

Core Components

Cerebro Mail is built using a microservices architecture with gRPC for internal communication:

  • SMTP Server: High-performance email sending service written in Go
  • Campaign Management: Service for managing email campaigns and schedules
  • Analytics Engine: Real-time analytics using Apache Pinot
  • Email Editor: Rich drag-and-drop template editor
  • AI Integration: Support for AI-assisted content creation and optimization
  • Team Management: Multi-tenant support with team collaboration features
  • Billing System: Subscription management for SaaS model

Technology Stack

  • Backend: Go (Golang) for performance and concurrency
  • Frontend: React/Next.js for admin dashboard and editor
  • Internal Communication: gRPC for service-to-service communication
  • User Data: PostgreSQL for transactional data
  • Analytics: Apache Pinot for high-performance analytics
  • Queue: Redis/RabbitMQ for message processing
  • Infrastructure: Kubernetes for orchestration

Database Strategy

  • PostgreSQL: Stores user accounts, team data, campaigns, templates, and billing information
  • Apache Pinot: Handles all analytics data including opens, clicks, bounces, and engagement metrics

Project Structure


cerebro-mail/
├── api/
│   ├── proto/                # Protocol buffer definitions
│   │   ├── smtp/             # SMTP service definitions
│   │   ├── campaign/         # Campaign management
│   │   ├── analytics/        # Analytics data structures
│   │   ├── team/             # Team management
│   │   ├── billing/          # Subscription/billing
│   │   ├── ai/               # AI service interfaces
│   │   └── common/           # Shared message types
│   └── gen/                  # Generated gRPC code
├── services/
│   ├── smtp/                 # SMTP server implementation
│   ├── campaign/             # Campaign management service
│   ├── delivery/             # Email delivery workers
│   ├── analytics/            # Analytics processing
│   ├── ai/                   # AI integration service
│   ├── billing/              # Subscription management
│   ├── team/                 # Team management
│   └── auth/                 # Authentication service
├── internal/
│   ├── queue/                # Message queue abstraction
│   ├── storage/              # Storage interfaces
│   ├── metrics/              # Metrics collection
│   └── utils/                # Shared utilities
├── web/
│   ├── admin/                # Admin dashboard frontend
│   ├── landing/              # Marketing site
│   ├── dashboard/            # User dashboard
│   ├── email-editor/         # Email template editor
│   ├── shared/               # Shared frontend components
│   └── api-gateway/          # gRPC-Web/REST gateway
├── docs/
│   ├── api/                  # API documentation
│   ├── user/                 # User documentation
│   ├── admin/                # Admin documentation
│   └── developer/            # Developer guides
├── infra/
│   ├── terraform/            # Infrastructure as code
│   ├── kubernetes/           # K8s configuration
│   ├── monitoring/           # Monitoring setup
│   ├── saas/                 # Multi-tenant infrastructure
│   ├── ci-cd/                # CI/CD configurations
│   │   ├── github-actions/   # GitHub Actions workflows
│   │   ├── gitlab-ci/        # GitLab CI configurations
│   │   ├── jenkins/          # Jenkins pipelines
│   │   └── argocd/           # ArgoCD configurations
│   └── pinot/                # Pinot deployment configs
└── tools/
    ├── cli/                  # CLI tools
    └── dev/                  # Development utilities

Key Features

Email Delivery

  • High-throughput SMTP server with worker pools
  • Automatic IP rotation to prevent blacklisting
  • Domain-based sending quotas and throttling
  • Smart retry logic based on error types
  • DKIM/SPF/DMARC implementation

Analytics

  • Real-time tracking of opens, clicks, and engagement
  • Detailed reports on campaign performance
  • Segmentation based on user behavior
  • A/B testing capabilities with statistical analysis
  • Deliverability monitoring and reputation tracking

Email Editor

  • Drag-and-drop template builder
  • Dynamic content blocks
  • Personalization token system
  • Mobile preview and testing
  • Template version control
  • Collaboration features for teams

AI Integration

  • Pluggable AI provider interface
  • Default AI service with reasonable rate limits
  • Custom provider configuration for enterprise users
  • AI-assisted email campaign creation
  • Subject line optimization
  • Content improvement suggestions
  • Send time optimization

Team and SaaS Features

  • Multi-tenant architecture
  • Team management with role-based access
  • Subscription tiers with different features
  • White-labeling capabilities
  • Usage tracking and quota enforcement

Development Roadmap

Phase 1: Core Infrastructure

  • Set up repository structure
  • Define proto schemas for services
  • Implement basic SMTP server in Go
  • Create PostgreSQL schema for user data
  • Set up Apache Pinot for analytics
  • Implement authentication service
  • Create API gateway for external communication

Phase 2: Campaign Management

  • Implement campaign creation and scheduling
  • Create recipient list management
  • Build email template storage
  • Implement sending pipeline with queues
  • Set up basic event tracking
  • Create simple dashboard for campaigns

Phase 3: Email Editor

  • Build drag-and-drop editor interface
  • Implement template components
  • Create personalization system
  • Add responsive preview capabilities
  • Implement template versioning
  • Add template sharing between team members

Phase 4: Analytics

  • Set up event tracking pipeline
  • Implement open and click tracking
  • Create analytics dashboards
  • Build reporting system
  • Implement A/B testing
  • Add deliverability monitoring

Phase 5: AI and Advanced Features

  • Implement AI service integration
  • Add content suggestions
  • Build subject line optimization
  • Create send time optimization
  • Implement audience segmentation
  • Add advanced personalization features

Phase 6: Team and SaaS Features

  • Implement multi-tenant support
  • Create team management
  • Build subscription billing system
  • Add role-based access control
  • Implement white-labeling
  • Create usage tracking and quotas

Scaling Considerations

  • Horizontal scaling of sending nodes
  • Sharded database for recipient lists
  • Rate limiting and throttling mechanisms
  • Caching layer for templates
  • Message queuing for asynchronous processing
  • Regional deployments for faster delivery

Security Features

  • End-to-end encryption options
  • Authentication and authorization
  • Email authentication standards
  • Rate limiting to prevent abuse
  • Anomaly detection for unusual patterns
  • Compliance with email regulations (CAN-SPAM, GDPR)

Getting Started

Prerequisites

  • Go 1.21+
  • Node.js 18+
  • Docker and Docker Compose
  • Kubernetes (for production deployment)

Development Setup

  1. Clone the repository
  2. Run make setup to initialize development environment
  3. Start services with docker-compose up
  4. Access the dashboard at http://localhost:3000

Contribution Guidelines

  • Follow Go and React best practices
  • Update protocol buffers as needed
  • Run tests before submitting PRs
  • Keep documentation updated

License

[License Information]