Cypht

A PHP webmail client that merges several IMAP, JMAP and Exchange accounts into combined views while still working as an ordinary mail reader.

1.8k stars, 258 forks PHP On GitHub since February 2014

Visit website View on GitHub How to run it

Cypht at a glance

Open sourceYes, LGPL-2.1No paid parts in the repository
Health85 of 100Actively developed
Self-hostingDockerOne-click in YunoHost and Unraid
InterfaceEnglish onlyNo translation files found
Issue repliesWithin ~10 hoursMedian first reply; 77% of recent issues answered

What is Cypht?

Cypht pulls messages from all your mailboxes into shared views, such as one combined inbox, without replacing the accounts behind them. You can still open each folder, read, file and send mail as in a regular client, and it doubles as a feed reader. It talks IMAP and SMTP, JMAP, and Microsoft Exchange through EWS. Every feature, including core ones, is a module set, the project's term for plugins, so sites can add or change behaviour without patching the core.

Good fit if

  • You juggle personal, work and Exchange accounts and want one browser tab for all of them.
  • You want to switch features on or off as plugins rather than fork the code.

Look elsewhere if

  • You want a long-established webmail suite for a single mailbox per login: Roundcube.
  • You prefer a lighter client that needs no database: SnappyMail.
  • You need the mail server itself, not just a client: Mailcow or docker-mailserver.

Before you adopt it

Cypht moved from GPL-2.0 to LGPL in April 2020 and is now LGPL-2.1, with no paid parts in the repository. An organization owns it, and 13 people committed in the last 90 days, and the work is spread across them. Installation options include a Docker image, whose compose example adds a MySQL container, and a Composer package. The community holds monthly meetings and chats on Gitter.

Drafted with AI from the project's README and repository data, then checked against that data on 7 November 2026. Report a correction

How to run Cypht yourself

One-click install

Not listed in Umbrel, TrueNAS, CasaOS, Runtipi, Proxmox VE Helper-Scripts and Coolify. Checked against each panel’s app catalog on 12 November 2026.

Ways to install

Docker files
Dockerfile or compose file in the repository
Compose file
docker/docker-compose.yaml: 2 services (mysql)
Setup effort
2 of 5, judged from the compose file
Kubernetes
No Helm chart in the repository
Desktop and mobile
No app builds in GitHub releases
Interface languages
English only

Install instructions: cypht.org or the README on GitHub.

Cypht health: is it still maintained?

85 of 100, actively developed

Release rhythmEvery ~14 daysLatest: v2.14.0, 6 November 2026
Issue repliesWithin ~10 hoursMedian first reply; 77% of recent issues answered
Bus factorLow riskThe most active of 13 authors wrote 41% of recent commits
  • Activity
    201 commits in the last 90 days, the latest on 12 November 2026.
    28 / 30
  • Contributors
    13 people wrote the latest 100 commits; the most active wrote 41% of them.
    15 / 20
  • Releases
    15+ releases in the last 12 months; the latest, v2.14.0, on 6 November 2026.
    19 / 20
  • Replies to issues
    Maintainers answered 77% of recent issues, with a median first reply after 10 hours.
    18 / 20
  • Security practices
    No OpenSSF Scorecard for this repository yet, so this part gets a neutral score.
    5 / 10

Read from GitHub on 12 November 2026. How the score works

Cypht security

Security advisories are the vulnerabilities the maintainers disclosed on GitHub, with the versions that fix them; many advisories can mean careful disclosure as much as weak code.

Security advisoriesNone publishedNo advisories in the repository’s Security tab

Advisories read from GitHub on 12 November 2026.

Cypht license: is it open source?

Cypht uses LGPL-2.1, an open-source license approved by the OSI.

  1. February 2014First published on GitHub under GPL-2.0.
  2. 21 April 2020Changed to LGPL. Commit: LGPL switch over with hopefully temp html2text replacement issue #333
  3. TodayLGPL-2.1.

Cypht for developers

Written in

  • PHP 78%
  • JavaScript 17%
  • CSS 3%
  • Python 2%
  • Shell <1%
  • Other <1%

Getting involved

Help wanted12Open, labelled “help wanted”Contributing guideYesCONTRIBUTING.mdOpen issues115On GitHub
Authors, 90 days13Of the latest 100 commits

Language shares are GitHub’s count of the code in the repository.

Alternatives to Cypht

  • Stalwart Mail ServerAll-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP,… 57 health · Unidentified license · 15.9k stars
  • MailuInsular email distribution - mail server as Docker images 76 health · MIT · 7.6k stars
  • docker-mailserverProduction-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running… 80 health · MIT · 19.7k stars
  • Mailcowmailcow: dockerized - + = 74 health · GPL-3.0 · 13.8k stars
  • Maddy Mail ServerComposable all-in-one mail server. 73 health · GPL-3.0 · 6.1k stars

All 17 projects in Email servers & webmail

Questions about Cypht

Is Cypht open source?

Yes. Cypht is published under LGPL-2.1, an OSI-approved open-source license.

Is Cypht still maintained?

Its health score is 85 of 100 (actively developed). It had 201 commits in the last 90 days, the latest on 12 November 2026, and its latest release came out on 6 November 2026.

Did Cypht change its license?

Yes. It moved from GPL-2.0 to LGPL on 21 April 2020.

How do I run Cypht?

You can run it with Docker and in one click from YunoHost and Unraid. The README on GitHub has the exact steps.

What is Cypht written in?

Cypht is written mainly in PHP (78% of the code), with JavaScript (17%), by GitHub’s count of the repository.

What are the alternatives to Cypht?

Close alternatives in the Email servers & webmail category include Stalwart Mail Server, Mailu, docker-mailserver.