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MailCoinDecentralized Email & Messaging

Secure, Private, and Blockchain-Powered Communication Platform

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MailCoin
🔒

End-to-End Encryption

OpenPGP-based encryption ensures your messages and emails are completely private and secure.

🌐

Decentralized Architecture

No central server stores your data. Anyone can run a communication node.

🔑

Blockchain Authentication

Use EVM wallet signatures for authentication instead of traditional passwords.

💰

Built-in Wallet

Integrated BNBChain wallet for seamless crypto transfers and red envelope features.

📧

Full Email Server

Complete SMTP/IMAP implementation compatible with standard email clients.

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Easy Deployment

One-click deployment script with automatic TLS certificate management.

What is MailCoin? ​

MailCoin is a revolutionary communication platform that combines enterprise-grade email services with modern blockchain technology. It consists of two main components:

MailChat Server ​

A composable, all-in-one email server with blockchain authentication support. Built in Go, it provides:

  • Full SMTP/IMAP protocol support
  • EVM wallet signature authentication
  • Multiple authentication methods (LDAP, PAM, etc.)
  • Flexible message processing pipeline
  • Production-ready deployment tools

Learn more about MailChat →

Sirr App ​

A decentralized messaging application with an integrated wallet. Features include:

  • OpenPGP end-to-end encryption
  • No central data storage
  • Built-in BNBChain wallet
  • Red envelope (crypto gift) feature
  • Multi-device synchronization

Learn more about Sirr →

Quick Start ​

Get started with MailCoin in minutes:

bash
# Deploy MailChat server with one command
curl -sSL https://raw.githubusercontent.com/mail-chat-chain/mailchatd/main/start.sh | bash

Or download the Sirr mobile app:

Community ​

License ​

MailChat is released under the GPL 3.0 License.

Released under the GPL 3.0 License.

Copyright © 2025 MailCoin Team