# MAIL-CARD

> A programmable, cloud-native email infrastructure platform written in Rust.

**Powered by IZUREX AGI LAB** – experimental cognitive intelligence layer.

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Platform Architecture

MAIL-CARD Core Engine
├─ SMTP Engine (async Rust)
├─ IMAP Engine (async Rust)  
├─ POP3 Engine (async Rust)
├─ Mail Queue (RocksDB)
├─ Storage Layer
└─ Control Plane (REST API)

IZUREX AGI LAB Intelligence Layer
├─ Fraud Detection (ML)
├─ Spam Detection (ML)
├─ Behavioral Analysis
└─ Adaptive Routing

Developed by IZUREX AGI LAB

](https://paypal.me/Izurex)

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What is MAIL-CARD

MAIL-CARD is a modern, high-performance email server built in Rust, designed for both private internal messaging networks and public internet email hosting.

�️ Security Features

MAIL-CARD includes enterprise-grade security with AI-enhanced threat detection:

• 🔐 Transport Security: STARTTLS, TLS 1.3, Perfect Forward Secrecy
• 🛡️ Authentication: Multi-factor authentication, OAuth 2.0, SAML
• 🔍 SPF Verification: Sender Policy Framework validation
• ✍️ DKIM Signing: DomainKeys Identified Mail authentication
• 📋 DMARC Validation: Domain-based Message Authentication
• 🚫 Rate Limiting: Advanced abuse protection
• 🤖 AI Threat Detection: Machine learning-based security analysis
• 📊 Behavioral Analysis: Anomaly detection and pattern recognition

�� Key Features

• Unified Architecture: Supports both private and public email hosting
• Modern Protocols: SMTP, IMAP, POP3 with full TLS support
• High Performance: Built on Rust with RocksDB storage
• Security First: DKIM signing, SPF validation, DMARC support
• API-Driven: RESTful HTTP API for management and monitoring
• Observability: Built-in metrics, logging, and health monitoring
• Scalable: Designed for single-node to distributed deployments

📋 Quick Start

Installation

# Clone repository
git clone https://github.com/YOUR_REPO/mail-card.git
cd mail-card

# Build release
cargo build --release

# Run with default config
./target/release/mail-card serve --config config.example.toml

Docker Deployment

# Pull latest image
docker pull mailcard/mail-card:latest

# Run with custom config
docker run -p 25:25 -p 80:80 -p 443:443 \
  -v /path/to/config:/config \
  mailcard/mail-card:latest

🏗️ Architecture

View Interactive Architecture

System Components

• Protocol Servers: SMTP, IMAP, POP3, HTTP API
• Security Layer: TLS/SSL, DKIM, SPF, DMARC
• Core Engine: Message queue, routing, storage
• Storage Layer: RocksDB, object storage, search
• Observability: Metrics, logging, health monitoring

View Interactive Architecture

🎯 Platform Vision

To build the first programmable, cloud-native email infrastructure with integrated cognitive intelligence.

MAIL-CARD combines modern Rust infrastructure with adaptive machine-learning systems to create an intelligent mail platform capable of learning, adapting, and securing communication systems.

🌟 Killer Feature: Intelligent Email Infrastructure

MAIL-CARD's breakthrough capability is cognitive intelligence integration that provides:

• 🔍 Automatic Phishing Detection - ML-powered financial fraud identification
• 🛡️ Fraud Pattern Recognition - Real-time scam and threat analysis
• 📊 Behavioral Anomaly Detection - User pattern learning and alerting
• ⚡ Adaptive Spam Filtering - Self-improving spam classification
• 🚀 Smart Delivery Optimization - AI-enhanced routing and performance

This positions MAIL-CARD uniquely at the intersection of fintech security, compliance, and modern infrastructure.

� Developer Ecosystem

MAIL-CARD provides comprehensive developer tools for building custom email solutions.

REST API

# Send email
POST /api/v1/mail/send
{
  "to": "user@example.com",
  "from": "sender@example.com",
  "subject": "Hello",
  "body": "Message content"
}

# Analyze message with AI
POST /api/v1/mail/analyze
{
  "message": "Full email content...",
  "analysis_type": ["spam", "fraud", "security"]
}

# Get real-time metrics
GET /api/v1/metrics
{
  "smtp_connections": 1250,
  "messages_sent": 8432,
  "queue_depth": 127,
  "ai_accuracy": 0.94
}

SDK Libraries

// Rust SDK
use mail_card_sdk::{MailCardClient, Message};

let client = MailCardClient::new("http://localhost:8080");
let message = Message::builder()
    .to("user@example.com")
    .from("sender@example.com")
    .subject("Hello")
    .body("World")
    .build();

let result = client.send(message).await?;

// Node.js SDK
const { MailCardClient } = require('@mail-card/sdk');

const client = new MailCardClient('http://localhost:8080');
await client.send({
  to: 'user@example.com',
  from: 'sender@example.com',
  subject: 'Hello',
  body: 'World'
});

Webhooks

# Configure webhooks
POST /api/v1/webhooks
{
  "url": "https://your-app.com/webhook",
  "events": ["message.received", "message.delivered", "threat.detected"],
  "secret": "webhook-secret"
}

�📚 Documentation

Architecture

• System Overview
• Data Flow
• Deployment Architecture

Configuration

• Installation Guide
• Configuration Reference
• DNS Setup

Development

• Contributing Guidelines
• API Documentation
• Security Model

🔧 Configuration

Basic Setup

server_name = "mail.example.com"

[smtp]
bind = "0.0.0.0:25"
tls_bind = "0.0.0.0:465"

[imap]
bind = "0.0.0.0:143"
tls_bind = "0.0.0.0:993"

[pop3]
bind = "0.0.0.0:110"
tls_bind = "0.0.0.0:995"

Production Template

See sibaq-us-production-fixed.toml for a comprehensive production configuration.

🌐 DNS Configuration

Required Records

# MX Record
example.com MX 10 mail.example.com

# SPF Record
example.com TXT "v=spf1 mx ip4:SERVER_IP -all"

# DKIM Record
mail._domainkey.example.com TXT "v=DKIM1; k=rsa; p=PUBLIC_KEY"

# DMARC Record
_dmarc.example.com TXT "v=DMARC1; p=none; rua=mailto:admin@example.com"

📊 Performance

MAIL-CARD is optimized for high-throughput email processing:

• Messages/Second: 10,000+ (depending on hardware)
• Concurrent Connections: 5,000+
• Storage Efficiency: Compressed message storage
• Memory Usage: < 100MB for 10,000 messages
• Startup Time: < 2 seconds

🔒 Security Features

• TLS Encryption: End-to-end encrypted connections
• DKIM Signing: Cryptographic message authentication
• SPF Validation: Sender verification
• DMARC Processing: Domain-based authentication
• Rate Limiting: Protection against abuse
• Audit Logging: Comprehensive activity tracking

🚀 Deployment Options

Single Node

• Small organizations (< 1000 users)
• Development environments
• Quick deployments

High Availability

• Medium organizations (1000-10000 users)
• Production workloads
• 99.9% uptime

Distributed

• Large enterprises (> 10000 users)
• Multi-region deployment
• 99.99% uptime

📈 Monitoring

MAIL-CARD provides comprehensive observability:

Health Endpoints

• GET /health - Service health status
• GET /ready - Readiness check
• GET /metrics - Prometheus metrics

Key Metrics

• SMTP connections and delivery rates
• Message queue depth
• Storage utilization
• Authentication success/failure rates
• Response times and throughput

🧪 Testing

# Run unit tests
cargo test

# Run integration tests
cargo test --test integration

# Run benchmarks
cargo bench

# Security audit
cargo audit

🤝 Contributing

We welcome contributions! Please see our Contributing Guidelines for details.

Development Setup

# Install Rust toolchain
rustup install stable
rustup component add rustfmt clippy

# Install development dependencies
cargo install cargo-audit cargo-deny

# Run pre-commit checks
cargo fmt
cargo clippy
cargo test

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Support & Donations

MAIL-CARD is maintained by IZUREX AGI LAB.

Support the project:

PayPal

https://paypal.me/Izurex

Contact:

silwimbaizukanji@gmail.com

🌟 Ways to Support

You can support MAIL-CARD by:

• ⭐ Star the repository - Help others discover MAIL-CARD!
• 🐛 Reporting bugs and issues
• 💡 Contributing improvements
• 📖 Improving documentation
• 🔄 Sharing the project
• 💰 Sponsoring development

🔮 Roadmap

Version 0.2.0

• Distributed clustering
• Advanced spam filtering
• Web administration interface
• Mailbox migration tools

Version 0.3.0

• AI-powered email classification
• Advanced search capabilities
• Multi-tenant support
• Plugin system

Version 1.0.0

• Production-ready stability
• Comprehensive documentation
• Enterprise features
• Long-term support

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MAIL-CARD - Modern Email Server for the Future 🚀