SnappyMail

SnappyMail is a self-hosted webmail client designed to provide a fast, modern email interface for existing mail servers via IMAP and SMTP. It is a community-driven continuation/fork of RainLoop, focusing on performance, security improvements, and compatibility with common mail setups.

Key Features

• IMAP mail access and SMTP sending (works with most existing mail providers/servers)
• Responsive, single-page web UI with keyboard shortcuts and conversation/thread view
• Sieve filtering support (manage server-side mail filtering rules where supported)
• PGP/GPG message encryption and signing support (via OpenPGP integration)
• Multiple accounts/identities and folder management
• Attachment handling, message search, and rich message viewing
• Admin panel for domain/account configuration and application settings
• Plugin/extension mechanism (feature set depends on enabled plugins)

Use Cases

• Provide a modern webmail UI for Postfix/Dovecot (or any IMAP/SMTP) mailboxes
• Offer browser-based email access for small teams without adopting a full groupware suite
• Replace hosted webmail UIs while keeping the existing mail server stack

Limitations and Considerations

• Not a mail server: requires external IMAP/SMTP services to function
• Some advanced capabilities depend on server support (e.g., Sieve availability)

SnappyMail is a good fit when you want a modern, performant webmail experience while retaining your current mail infrastructure. It targets practical administration and end-user usability without the operational overhead of a full email/groupware platform.