# roundcube/roundcubemail

The Roundcube Webmail suite

Repository: https://github.com/roundcube/roundcubemail
Canonical: https://ross.abutalabs.com/products/roundcubemail
Homepage: https://roundcube.net
Language: PHP
License: GPL-3.0
License Family: copyleft
Last push: 2026-08-25T17:11:20+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 5234, "days_push": 8, "days_rel": 24, "gap_med": 11.5, "n_releases_24m": 19}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7131, forks 1774 (observed 2026-08-28T04:09:56.114035+00:00)

## What it is
Roundcube Webmail is a browser-based, multilingual IMAP email client written in PHP with an application-like user interface. It offers full webmail functionality including MIME/HTML message support, address books with LDAP connectors, folder management, message searching, spell checking, and an extensible plugin API with customizable skins.

## Use cases
- self-host a webmail interface for an existing IMAP/SMTP mail server
- give users browser-based access to their email without installing a desktop client
- provide a multilingual webmail UI in over 80 languages
- extend webmail with custom plugins via the plugin API
- customize the webmail look and feel with skins
- add PGP-encrypted email reading and sending in the browser

## When to choose
- you already run an IMAP/SMTP mail server and need a web frontend
- you want a mature, self-hosted webmail solution on a standard LAMP stack
- you need a customizable, plugin-extensible webmail client
- you want an open-source alternative to proprietary webmail like Gmail or Outlook Web

## When to avoid
- you need a full mail server (Roundcube is only a client, not an MTA/IMAP server)
- you want an email client for a desktop or mobile device rather than the browser
- your stack is not PHP-based and you prefer not to run PHP on a web server
- you need offline email access

## Facets
- artifact type: application
- maturity: stable
- function: email, http-server, search-engine, plugin-system, caching, security
- domain: email, self-hosted, web-development, privacy
- platform: self-hosted, php
- tags: webmail, imap-client, email-client, php, skins, address-book, pgp-encryption, smtp, web-server, linux

## Member repositories
- roundcube/roundcubemail (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:56.114035+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:40:03.623317+00:00, confidence not recorded.
  - readme: https://github.com/roundcube/roundcubemail (fetched 2026-08-28T04:09:56.114035+00:00, sha f7f948a59679)
  - homepage: https://roundcube.net (fetched 2026-08-29T08:35:34.649416+00:00, sha 50784a457ee6)
  - site_page: https://roundcube.net/about (fetched 2026-08-29T08:35:34.651968+00:00, sha 247c3f695013)
- Data as of 2026-08-30T08:39:29.467469+00:00.