v3.0

# BillionMail V3.0 Release Notes

## 🚀 Major Features

### 📤 IP Warmup System (v0.1 Beta)
- **Smart Rate Adjustment**  
  Automatically analyzes sending patterns to optimize delivery rates and reduce spam marking
- **Beta Notice**  
  This feature is under active development and will be refined in future updates

### 🔌 Sending API
- **Core Capabilities**  
  - Transactional Email support
  - IP whitelisting for basic security
  - High-performance architecture for frequent API calls
- **Data Dashboard**  
  - Visual statistics interface
  - Time-range filtering support

### 📊 Marketing Campaign Analytics
- **Dashboard Features**  
  - Interactive data visualization
  - Trend analysis charts for business growth
  - Major ESP performance metrics
  - Time-based data filtering
- **IP Warmup Integration**  
  - Direct association with the warmup system
  - ETA display for campaign completion

## ⚙️ Optimizations

### 🔐 Certificate Management
- Improved certificate reuse logic
- Auto-renewal now uses the admin account by default

### 📨 Email Throttling
- Dynamic rate adjustment with IP warmup system
- Added retry delay to prevent CPU overload

### 🛡️ Security Enhancements
- **fail2ban Improvements**  
  - Automatic service restart on log updates
  - Better console protection
- **Service Stability**  
  - Optimized supervisor configs for Postfix/Dovecot

## 🐛 Bug Fixes
- **DKIM Key Fix**  
  Resolved public key truncation when upgrading from 1024-bit to 2048-bit
- **Rspamd Configuration**  
  Fixed service crashes during auto-update of config files