Cypht

At a glance

• Editor score
  7.0 / 10
• Pricing
  Free plan
• Best for
  Self-hosted standards-based webmail
• Free plan
  Yes
• Paid from
  Free
• App coverage
  Web
• Facts checked
  23 Sep 2026

• 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

Our verdict on Cypht

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.

Your product? Our editors can test Cypht in depth and publish a review, labelled as paid · from $149/mo →

Cypht pricing

Cypht fact sheet

Cypht integrations

Cypht lists 7 integrations on its own site.

• Gmail
• Outlook and Office 365
• IMAP
• JMAP
• EWS
• SMTP
• RSS

Alternatives to Cypht

• Mozilla ThunderbirdA capable free client for multi-account email, offline access, and desktop productivity tools.9.4
• Zoho MailA flexible hosted email service with free access, migration tools, and Zoho collaboration options.9.2
• Apple MailA capable Apple-focused email client with unified inboxes, scheduling, privacy controls, and AI assistance.9.1

See all Cypht alternatives →

Featured on iTechGuides

Cypht is listed in our Email Clients directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update