Roundcube
Roundcube is a mail client that allows managing mail through a web interface.
Roundcube requirements
Before installing Roundcube:
Install Roundcube
- Go to Software configuration.
- Select Mail server (SMTP/POP3/IMAP).
- Click
Software settings on the toolbar. - Check the Roundcube box and click Save.
5. Wait for Roundcube to install.
Roundcube in ispmanager 6.107 and above
Starting with version 6.107, ispmanager comes with its own Roundcube build based on the stable version of the web-client. The new Roundcube is available on all currently supported operating systems.
After ispmanager upgrades to 6.107 or above, Roundcube will be forced to update.
The old version of Roundcube will be saved to /usr/share/roundcubemail.bkp (Almalinux) and /usr/share/roundcube.bkp (Debian/Ubuntu).
Web-server configuration files will be updated.
On Debian/Ubuntu:
/etc/nginx/vhosts-includes/roundcube-nginx.conf(Nginx);/etc/apache2/conf.d/roundcube-apache.conf(Apache);/usr/local/lsws/conf/vhosts-includes/roundcube-openlitespeed.conf(OpenLiteSpeed).
On Almalinux:
/etc/nginx/vhosts-includes/roundcube.conf(Nginx);/etc/httpd/conf.d/roundcube-isp.conf(Apache);/usr/local/lsws/conf/vhosts-includes/roundcube.conf(OpenLiteSpeed).
If you edited these files, their old versions will be saved in the same directory with the extensions .dpkg-old (on Debian/Ubuntu) or .rpmsave (on Almalinux).
Instead of native PHP versions, the Roundcube build from ispmanager uses the alternative PHP 7.4:
- With Nginx and Apache, the PHP-FPM mode is used. To support FPM, the proxy and proxy_fcgi modules are installed for Apache. The configuration file:
/opt/php74/etc/php-fpm.d/roundcube.php-fpm.conf. - With OpenLiteSpeed, the LSAPI mode is used. The configuration file:
/usr/local/lsws/conf/php/isp-php74-roundcube.conf.
Access Roundcube
To open the web-client:
- Go to Mail.
- Select a mailbox.
- Click
Mail client on the toolbar or Open the mail web client in the dropdown menu 
.
4. Roundcube web interface will open in a new tab. You can now start using it as a regular mail client.
Roundcube limits
You can set limitations of the email size, attachment size and PHP execution time for Roundcube. For more information about the limitations, please see the Mail settings article.