Roundcube

A free, open-source webmail client with an application-like interface. Access your email from any browser without installing a desktop client. Supports IMAP and SMTP with a modern, responsive UI.

What You Can Do After Deployment

1. Visit your domain — the login page appears where you enter your email credentials
2. Log in with your email account — use your email address and password (the IMAP/SMTP server must be configured via environment variables)
3. Read and send email — full-featured email client with rich text editor, attachments, and HTML message support
4. Manage contacts — built-in address book with import/export (vCard) support
5. Organize mail — create folders, set up filters, search messages, and manage identities

Key Features

• Modern, responsive web UI that works on desktop, tablet, and mobile
• Full IMAP support with folder subscriptions and message threading
• Rich text (HTML) message composition with drag-and-drop attachments
• Address book with contact groups and vCard import/export
• Message search across folders with advanced filters
• Multiple sender identities
• Spell checking
• Multilingual interface (80+ languages)
• Plugin system for extending functionality

Configuration

This template uses SQLite for internal storage (no external database needed). You must configure the IMAP and SMTP server details:

• ROUNDCUBEMAIL_DEFAULT_HOST — IMAP server (e.g. ssl://imap.gmail.com)
• ROUNDCUBEMAIL_DEFAULT_PORT — IMAP port (default: 993)
• ROUNDCUBEMAIL_SMTP_SERVER — SMTP server (e.g. tls://smtp.gmail.com)
• ROUNDCUBEMAIL_SMTP_PORT — SMTP port (default: 587)

License

GPL-3.0 — GitHub | Website