Install Requirements

Server Requirements

(for stable version 1.2)

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 5.3.7 or greater 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
- 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 1.0.12 or newer
- Net_IDNA2 0.1.1 or newer
- Auth_SASL 1.0.6 or newer
- Net_Sieve 1.5.0 or newer (for managesieve plugin)
- Crypt_GPG 1.4.1 or newer (for enigma plugin)
- Net_LDAP2 2.2.0 or newer (for LDAP address books)
- kolab/Net_LDAP3 dev-master (for LDAP address books)
php.ini options:
- error_reporting E_ALL & ~E_NOTICE
- memory_limit > 16MB (increase as suitable to support large attachments)
- file_uploads enabled (for attachment upload features)
- session.auto_start disabled
- suhosin.session.encrypt disabled
- mbstring.func_overload disabled
- magic_quotes_runtime disabled
- magic_quotes_sybase disabled
- register_globals disabled (PHP < 5.4)
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
An SMTP server (recommended) or PHP configured for mail delivery

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)