mailinaboxMail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

mailinabox

Mail-in-a-Box enables individuals to reclaim control of their email by providing a one-click, easy-to-deploy mail server solution. It turns a fresh Ubuntu machine into a fully functional, secure email appliance with all necessary components pre-configured and ready to use.

Key Features

• Complete Mail Stack: SMTP, IMAP, CardDAV, CalDAV, and Exchange ActiveSync servers pre-installed and configured
• Security & Authentication: Automatic TLS certificates via Let's Encrypt, SPF, DKIM, DMARC, DNSSEC, and DANE TLSA support
• Spam & Threat Protection: Built-in spam filtering with SpamAssassin, greylisting, and intrusion detection via fail2ban
• Webmail & Management: Roundcube webmail interface and comprehensive control panel for managing users, aliases, and settings
• Automated Backups: Duplicity-based backup system with firewall and system monitoring included
• Health Monitoring: Daily automated checks for service status, port availability, TLS validity, and DNS configuration

Use Cases

• Email Sovereignty: Self-host email to avoid corporate surveillance and maintain complete data ownership
• Domain Control: Run mail services for custom domains without relying on third-party email providers
• Privacy Protection: Deploy a mail server aligned with privacy-first principles and decentralization goals
• Website Hosting: Leverage the HTTPS-enabled infrastructure for static website hosting alongside email

Who Is It For

Mail-in-a-Box is designed for individuals and small organizations who want to take control of their email infrastructure without deep technical expertise. It's ideal for privacy-conscious users seeking email independence and those who value decentralization principles.