Introduction to SirrChat

SirrChat is a composable all-in-one email server with blockchain authentication support. It integrates enterprise-grade email server functionality with EVM wallet signature authentication to create a secure, modern email platform.

What is SirrChat?

SirrChat is a fully-featured email server built in Go that provides:

• Complete SMTP/IMAP protocol support
• Blockchain wallet signature authentication
• Flexible message processing pipeline
• Production-ready deployment tools
• Multi-database and multi-storage backend support

Key Features

Core Capabilities

• Full Email Server: Complete SMTP/IMAP support with enterprise-grade features
• Blockchain Authentication: EVM wallet signature-based email access control
• Multi-DNS Support: Automated TLS certificates with 15+ DNS provider integrations
• Spam Protection: DKIM, SPF, DMARC validation with reputation scoring
• Flexible Storage: SQL database backends (PostgreSQL, MySQL, SQLite) and S3-compatible object storage

Technical Specifications

Feature	Specification
Email Protocols	SMTP, IMAP, Submission
Authentication	EVM Wallet, LDAP, PAM, SASL
TLS	Automatic ACME certificates
Storage	SQLite, PostgreSQL, MySQL, S3
DNS Providers	15+ supported

Architecture Overview

┌─────────────────┐     ┌─────────────────┐
│  Email Client   │────▶│   SMTP/IMAP     │
│  (Thunderbird,  │     │   Endpoints     │
│   Outlook, etc) │     └────────┬────────┘
└─────────────────┘              │
                                 ▼
                    ┌─────────────────────┐
                    │  Authentication     │
                    │  (Blockchain/LDAP)  │
                    └────────┬────────────┘
                             │
              ┌──────────────┼──────────────┐
              ▼              ▼              ▼
     ┌─────────────┐  ┌───────────┐  ┌──────────┐
     │   Storage   │  │   Check   │  │  Modify  │
     │  (SQL/S3)   │  │(DKIM/SPF) │  │  (DKIM)  │
     └─────────────┘  └───────────┘  └──────────┘

Why Choose SirrChat?

For Developers

• Modular Architecture: Easy to extend with custom modules
• Clean API: Well-documented interfaces for building custom features
• Multiple Language Support: Built in Go, with bindings available
• Active Development: Regular updates and improvements

For System Administrators

• One-Click Deployment: Automated installation script
• Easy Configuration: Simple, readable configuration format
• Production Ready: Battle-tested with comprehensive monitoring
• Flexible Deployment: Supports Docker, systemd, and manual deployment

For Security-Conscious Organizations

• Blockchain Authentication: Eliminate password-based vulnerabilities
• End-to-End Encryption: Full TLS support with automatic certificate management
• Spam Protection: Multiple layers of anti-spam measures
• Open Source: Fully auditable codebase under GPL 3.0 license

Use Cases

Private Email Server

Deploy your own email server with full control over your data and privacy.

Corporate Email

Enterprise-grade email solution with LDAP integration and advanced authentication options.

Blockchain-Based Communication

Leverage blockchain wallets for passwordless email authentication.

Development and Testing

Perfect for development environments with SQLite support and easy local setup.

Next Steps

Ready to get started?

• Quick Start - Get SirrChat running in minutes
• Installation - Detailed installation guide
• Configuration - Configure SirrChat for your needs

Community and Support

• GitHub: mail-chat-chain/mailchatd
• License: GPL 3.0

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SirrChat - Modern Email Server with Blockchain Authentication