DarkLabel

A white-label lead management platform built with Go. Features a public-facing website with service information and contact form, plus a full admin panel for managing leads and email communications. Fully configuration-driven — customize business name, colors, services, and more via environment variables.

Features

• Public Website

  • Responsive, mobile-first design
  • Service listings and business information
  • Contact form with validation and honeypot spam protection
  • SEO optimized (meta tags, sitemap, structured data)
  • Configurable color scheme via CSS variables

• Admin Panel

  • Lead management with status tracking (new, contacted, closed)
  • Email inbox (Postmark inbound webhook)
  • Compose and send emails via Postmark
  • Email forwarding configuration
  • Trash/spam management for leads and emails
  • Session-based authentication with rate limiting

• White-Label Ready

  • All branding configured via environment variables
  • Dynamic service options (JSON configuration)
  • Customizable color palette (primary, secondary, accent)
  • No hardcoded business names, addresses, or phone numbers

Tech Stack

• Backend: Go (standard library, no frameworks)
• Database: SQLite with WAL mode
• Email: Postmark API
• Frontend: Vanilla HTML/CSS/JS, Lucide icons
• Deployment: systemd service behind nginx

Quick Start

# Copy environment config
cp .env.example .env
# Edit .env with your business details

# Build
make build

# Run locally
make run

The app will start on the configured port (default: 8123).

Configuration

Copy .env.example to .env and configure all variables:

Services Configuration

The SERVICES_JSON variable accepts a JSON array of service options for the contact form:

[
  {"value": "consulting", "label": "Consulting"},
  {"value": "support", "label": "Technical Support"},
  {"value": "sales", "label": "Sales Inquiry"},
  {"value": "other", "label": "Other"}
]

Project Structure

.
├── cmd/main.go              # Entry point, routing, middleware
├── internal/
│   ├── config/              # Environment configuration
│   ├── database/            # SQLite initialization and migrations
│   ├── handlers/
│   │   ├── admin/           # Admin panel handlers
│   │   └── public.go        # Public page handlers
│   ├── mailer/              # Postmark email client
│   ├── models/              # Data structures
│   ├── ratelimit/           # IP-based rate limiting
│   ├── session/             # Session management
│   ├── templates/           # Template rendering
│   ├── testutil/            # Test helpers
│   └── validation/          # Form validation
├── static/
│   ├── css/                 # Stylesheets
│   └── js/                  # JavaScript
├── templates/               # HTML templates
│   ├── admin/               # Admin panel templates
│   ├── base.html            # Base layout
│   └── *.html               # Public pages
├── data/                    # SQLite database (gitignored)
└── .env.example             # Environment template

Commands

make build      # Build the binary
make run        # Run locally
make restart    # Rebuild and restart systemd service
make logs       # View service logs
make status     # Check service status

Customization

Colors

Override the default slate/blue palette with any hex colors:

COLOR_PRIMARY=#1a1a2e
COLOR_SECONDARY=#16213e
COLOR_ACCENT=#e94560

These are injected as CSS custom properties and cascade throughout the site.

Templates

HTML templates are in the templates/ directory. They use Go's html/template package with template variables for all business data. No hardcoded values need changing — everything flows from the configuration.

License

MIT License. See LICENSE for details.