Install Requirements

Server Requirements

(for stable versions 1.3.x, 1.4.x and 1.5.x)

Apache, Lighttpd, Cherokee, Hiawatha or Nginx web server
Directory on the Web server allowed to run scripts
If using Apache, .htaccess support or configuration to override DirectoryIndex
PHP version 5.4.1 or greater (and < 8.0 **) with
- PCRE (Perl-Compatible Regular Expressions)
- DOM
- JSON
- XML
- Mbstring
- OpenSSL
- Session support
- Socket support
- PHP Data Objects (PDO) with driver for either MySQL, PostgreSQL, SQL Server or SQLite
- Internationalisation support (since Roundcube 1.5-beta)
- Iconv (optional)
- FileInfo (optional)
- Zip (optional)
- Pspell (optional)
PEAR packages distributed with Roundcube or external:
- Mail_Mime 1.10.0 or newer
- Net_SMTP 1.7.1 or newer
- Net_Socket 1.2.1 or newer
- Net_IDNA2 0.1.1 or newer
- Auth_SASL 1.1.0 or newer
- Net_Sieve 1.4.0 or newer (for managesieve plugin)
- Crypt_GPG 1.6.1 or newer (for enigma plugin)
- Net_LDAP2 2.2.0 or newer (for LDAP address books)
- kolab/Net_LDAP3 1.0.6 or newer (for LDAP address books)
php.ini options:
- error_reporting E_ALL & ~E_NOTICE
- memory_limit > 16MB (increase as suitable to support big mailboxes)
- file_uploads enabled
- session.auto_start disabled
- suhosin.session.encrypt disabled
- mbstring.func_overload disabled
If using MySQL or PostgreSQL, a database server and database user with permission to create tables
An IMAP server which supports IMAP 4 rev 1
A SMTP server

** PHP 8 will be supported with Roundcube 1.5

Internet Explorer 10 (Windows 8)
Internet Explorer 9 (Windows 7)
Internet Explorer 8 (Windows XP/7) - requires legacy_browser plugin since Roundcube 1.1
Internet Explorer 7 (Windows XP) - requires legacy_browser plugin since Roundcube 1.1
Safari 3+ (Mac OS X 10.5 and Windows XP)
Firefox 3.6 (Windows XP, Linux) - requires legacy_browser plugin since Roundcube 1.1
Firefox 4+ (Windows, Linux)
Google Chrome 9+ (Mac OS X, Windows 7, Linux)