Cypht review
A flexible self-hosted webmail client for standards-based multi-account email.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Cypht is an open-source, self-hosted webmail client for individuals, schools, businesses, and internet service providers. It combines multiple email accounts and RSS feeds in a unified interface while retaining standard folder navigation. The web application supports IMAP, SMTP, JMAP, and EWS, making it suited to organizations that need a standards-based way to work across different mail systems. Cypht is written in PHP and JavaScript and distributed under the LGPL v2.1 license.
Its strongest area is account and message management. Users can search across accounts, move and copy messages between accounts and folders, and apply Sieve server-side filtering. Composition supports plain text, HTML, and Markdown, while configurable modules and plugins provide a way to shape the interface around an organization’s needs. Calendar events and reminders extend the client beyond email, and LDAP and RSS support broaden its fit within existing webmail and information workflows. These capabilities make Cypht a good match for teams that value control over deployment and interoperability over a hosted inbox experience.
Deployment is the main consideration. Cypht is presented as a self-hosted webmail client, so organizations should be prepared to manage the web application and its surrounding environment rather than subscribe to a vendor-hosted service. Its published feature set includes client-side and server-side encryption, but it does not provide verified offline access or AI features. Choose Cypht when open-source licensing, self-hosting, unified multi-account access, and protocol coverage are priorities. A hosted client, offline-first workflow, or AI-assisted email experience will point buyers toward another option.
Cypht pros and cons
- Where it wins
- Unified inbox with cross-account search and combined views
- Supports IMAP, SMTP, JMAP, and EWS
- Open source with filtering, calendar, and encryption features
- Where it doesn't
- Requires self-hosted deployment rather than a vendor-hosted service
- No verified offline access
- No AI features
Cypht fact sheet, pricing and score →
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