SnappyMail

SnappyMail is a simple, modern, and lightweight web-based email client. It is a heavily upgraded and security-focused fork of the RainLoop Webmail Community edition, designed for fast UI performance and easy deployment without requiring a database.

Key Features

• IMAP webmail with a responsive, modern interface and dark mode
• Privacy/GDPR-oriented defaults (removes common third-party integrations and tracking-related features)
• Admin panel for server configuration, domains, and security settings
• Optional address book support (can use MySQL/MariaDB for contacts)
• Sieve script support with an advanced editor for server-side mail filtering rules
• Improved encryption capabilities, including stronger PGP support (supports modern key types)
• Security hardening measures such as syslog logging for auth failures and guidance for fail2ban
• Plugin system, including the ability to load plugins as PHAR packages

Use Cases

• Provide webmail access for a self-hosted or managed IMAP email server
• Offer fast, low-overhead webmail for organizations that want privacy-friendly defaults
• Manage mail filtering rules via Sieve without needing a desktop client

Limitations and Considerations

• POP3 support is removed; IMAP is the primary protocol
• Browser support excludes legacy browsers (for example, Internet Explorer and legacy Edge)

SnappyMail fits well when you need a performant, minimal webmail interface with modern security improvements over the original RainLoop codebase. It is particularly suitable for IMAP-centric setups and users who want a streamlined, privacy-conscious webmail experience.