
Cypht
Open-source webmail and RSS aggregator built from modular plugin sets.

Cypht is an open-source webmail client and RSS aggregator designed around a modular plugin architecture. It unifies multiple IMAP accounts into a single inbox and supports composing messages with Markdown, while offering a flexible plugin system to extend functionality.
Key Features
- Unified inbox views for multiple IMAP accounts and RSS feeds, with standard mailbox navigation
- Modular plugin sets (module sets) that can be added or replaced to customize the application
- Server-side Sieve email filtering to automatically organize the inbox
- Global search across all connected accounts and feeds from a single form
- Markdown-enabled email composition with conversion to HTML on send
- Flexible authentication methods and auto-discovery based on user domain
- Sessions and data storage in PDO-compatible databases or flat files
- Docker installation option via an official image for easier deployment
- Extensible with modules for IMAP, SMTP, LDAP, WordPress, GitHub, and more
- Built with PHP and JavaScript, emphasizing a lightweight, plugin-driven architecture
Use Cases
- Individuals managing multiple email accounts and RSS feeds from one interface
- Small businesses or schools needing a self-hosted, customizable email solution
- Organizations extending capabilities through modules (e.g., WordPress, GitHub, LDAP) to fit site-specific needs
Limitations and Considerations
- PHP version and extension requirements vary by version; ensure compatibility with PHP 8.1+ for newer releases
- Some features rely on server capabilities (e.g., IMAP/SMTP extensions and Sieve support on the mail server)
- The modular approach adds flexibility but may require more setup and maintenance than monolithic clients
Conclusion
Cypht provides a modular, self-hosted approach to email and RSS aggregation, enabling unified access across accounts and extensible functionality through plugin sets. Its PHP/JavaScript foundation and Docker deployment model make it adaptable for personal use or small organizations that want configurable, private-mail tooling.
Categories:
Tags:
Tech Stack:
Similar Services

AppFlowy
Open-source collaborative workspace and Notion alternative
Open-source, privacy-focused collaborative workspace for notes, databases, kanban boards and AI-assisted writing; desktop, mobile and web clients with local-first storage...

AFFiNE
Open-source, local-first knowledge workspace for docs, whiteboards and databases
All-in-one, privacy-focused workspace that merges docs, whiteboards and databases with real-time collaboration and multimodal AI assistance.

Nextcloud
Open-source collaboration platform for file sync and groupware
Nextcloud is an open-source content collaboration platform providing file sync & share, groupware (calendar, contacts, mail), real-time office editing, chat and video con...


Etherpad
Real-time collaborative text editor with plugin extensibility
Etherpad is a web-based real-time collaborative editor with chat, rich-text formatting, and a plugin framework for customization and integrations.

Overleaf
Web-based collaborative LaTeX editor
Open-source, web-based LaTeX editor for real-time collaboration, project management, and PDF compilation in the browser.

CryptPad
End-to-end encrypted collaborative office and document suite
CryptPad is an end-to-end encrypted collaboration suite with real-time editors, file storage, and sharing, designed to keep document contents private from servers and adm...




