[Open Source] Free for Commercial Use, Enterprise-Grade Self-Hosted Email System with an All-in-One Solution for Sending, Receiving, and Marketing

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2026-06-28 09:11 20 次浏览 • 0 次下载 0KB

[Open Source] Free for Commercial Use, Enterprise-Grade Self-Hosted Email System with an All-in-One Solution for Sending, Receiving, and Marketing

1. Project Overview

QingChen Mail

Enterprise Self-Hosted Email System · All-in-One Solution for Sending, Receiving, and Marketing

An enterprise-grade self-hosted email marketing solution. Supports direct delivery, SMTP relay, automatic DKIM/SPF signing, subdomain isolation, and a fully visual management dashboard. A perfect alternative to expensive EDM services.

Enterprise-grade Self-hosted Email Marketing Solution. Direct Send, SMTP Relay, Auto DKIM/SPF, Subdomain Isolation, and Visual Management Dashboard. Perfect replacement for expensive EDM services.

2. Open Source License

Licensed under MIT

3. Screenshots

️ System Preview

Dashboard	Marketing Campaigns
Contact Management	Email Templates
Domain Configuration	Inbox

More Screenshots

Sending Channels	Key Management

Sending Logs	System Settings

4. Feature Overview

Why Choose QingChen Mail?

Pain Points	Traditional Solutions	QingChen Mail
Cost	Third-party EDM services charge based on usage; the more emails you send, the higher the cost	Deploy Once, Free Forever
Privacy	Email content passes through third-party servers, creating potential data leakage risks	100% Data Ownership and Control
Flexibility	Limited APIs with no customization options	Open source and customizable, with fully accessible RESTful APIs
Deliverability	Shared IPs are easily flagged as spam	Dedicated IP + Automatic DKIM/SPF/DMARC Configuration

Core Capabilities

Intelligent Email Delivery Engine

Dual-Mode Delivery
Intelligent Switching Between Direct Delivery and SMTP Relay
High Deliverability
Automatic DKIM Signing + SPF/DMARC Record Generation
Subdomain Isolation
Separate Marketing Emails from Transactional Emails to Protect Your Main Domain's Reputation
Asynchronous Queue
Built-in High-Performance Queue with Failed Delivery Retries and Concurrency Control
Marketing Campaigns
Supports Pause/Resume, Real-Time Progress Tracking, and Open Rate Statistics

Email Gateway

SMTP Receiving
Built-in SMTP Server for Receiving Emails Sent to Domain Mailboxes
STARTTLS Encryption
Supports TLS-Encrypted Transmission to Prevent Eavesdropping
Intelligent Forwarding
Wildcard/Prefix Matching with Automatic Forwarding to Gmail/QQ
MIME Parsing
Automatic Base64/QP Decoding with Full Chinese Character Support
Attachment Handling
Automatic Extraction and Storage with Online Preview Support

️ Security Protection

Two-Factor Authentication (2FA)
TOTP One-Time Passwords, Compatible with Google/Microsoft Authenticator
Rate Limiting
IP-Level Connection Limits to Prevent DDoS/Brute-Force Attacks
IP Blacklist
Block Malicious IPs with One Click
JWT Authentication
Dual Authentication with Secure Token + API Key
Password Encryption
bcrypt Hash Storage
HTTPS Support
Full-Site SSL Encryption
Certificate Management
Automatic Let's Encrypt Certificate Issuance/Renewal with Manual Upload Support
Automatic Backups
Automatic Backup Before Updates with One-Click Rollback Support

Developer Friendly

RESTful API
Standardized Interface with Bearer Token Support
Permanent API Keys
sk_live_... Format for Easy Integration
Template Engine
{{.name}} Variable Replacement for Personalized Emails
Webhook Callbacks
Real-Time Delivery Status Notifications
Interactive Documentation
Built-in API Documentation + AI Prompts
Online Updates
One-Click Check/Download/Install of New Versions
Hot Restart
: Automatically restarts after updates without manual intervention

Function List

Module	Function	Status
Sending Center	Single/Bulk Sending, Attachment Support, HTML Templates	✅
Marketing Campaigns	Scheduled Sending, Pause/Resume, Progress Tracking, Statistical Analysis	✅
Contacts	Group Management, Import/Export, Unsubscribe Management	✅
Inbox	SMTP Receiving, MIME Parsing, Attachment Extraction, Bulk Operations	✅
Forwarding Rules	Exact/Prefix/Wildcard Matching, Multi-Destination Forwarding	✅
Domain Management	Multi-Domain Support, Automatic DKIM Generation, DNS Verification	✅
Sending Channels	SMTP Relay Configuration, Direct Delivery, Load Balancing	✅
Security Protection	2FA Two-Factor Authentication, STARTTLS, Rate Limiting, IP Blacklist	✅
Certificate Management	Automatic Let's Encrypt Application, Manual Upload, Automatic Renewal	✅
Data Cleanup	Automatic Scheduled Cleanup, Retention Policy Configuration, Manual Cleanup	✅
System Settings	HTTPS, Port Configuration, Backup and Recovery	✅
API	RESTful API, Permanent API Keys, Interactive Documentation	✅

5. Tech Stack

Technical architecture

┌─────────────────────────────────────────────────────────────┐
│                      QingChen Mail Architecture Diagram       │
├─────────────────────────────────────────────────────────────┤
│  ┌─────────┐    ┌─────────┐    ┌─────────┐    ┌─────────┐  │
│  │  Web UI │    │   API   │    │  SMTP   │    │  Queue  │  │
│  │ (HTML5) │    │  (Gin)  │    │ Server  │    │ Worker  │  │
│  └────┬────┘    └────┬────┘    └────┬────┘    └────┬────┘  │
│       │              │              │              │        │
│       └──────────────┴──────────────┴──────────────┘        │
│                          │                                   │
│                    ┌─────┴─────┐                            │
│                    │   GORM    │                            │
│                    │  SQLite   │                            │
│                    └───────────┘                            │
└─────────────────────────────────────────────────────────────┘

Layer	Technical Selection
Backend	Go 1.21+ · Gin · GORM · SQLite
Frontend	HTML5 · TailwindCSS · Chart.js
Email	go-mail · go-msgauth (DKIM) · STARTTLS
Security	bcrypt · JWT · TOTP (2FA) · Rate Limiter
Certificate	ACME · Let's Encrypt · lego

Quick Start

1️⃣ Download and Run

# Download the binary file for your platform from Releases

# Linux/macOS
chmod +x goemail && ./goemail

# Windows
goemail.exe

2️⃣ Access the Admin Panel

Open [http://localhost:9901](http://localhost:9901) in your browser

Project	Value
Default Username	admin
Default Password	123456

⚠️ Please change your password immediately after your first login and enable two-factor authentication (2FA) for better security!

Command-Line Arguments

# Reset the administrator password to 123456
./goemail -reset

# Reset administrator two-factor authentication (use when 2FA is forgotten)
./goemail -reset-totp

下载地址免费

资源直链https://gitee.com/QtCodeCreators/QingChenMail

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