Roundcube App

Default Setup

Roundcube is pre-configured for use with Cloudron Email.

Multi-domain Setup

Users can login with their email and password to access their mailbox. If the Cloudron has two domains, and, the user can login using and Aliases can be added as identities under Roundcube settings.

Vacation Email

An out of office / vacation mail message can be setup using Sieve filters.

A vacation message can be set in Settings -> Filters -> Add filter -> Vacation message action.

Forwarding all emails

To forward all emails to an external mail, setup a Sieve filter in Settings -> Filters -> Add a filter -> Forward to


Plugins can be installed as follows:

  • Extract the plugin using the Web terminal into /app/data/plugins.

  • Change the ownership of the extracted plugin to www-data.

  • Add the plugin to $config['plugins'] in /app/data/customconfig.php:

    array_push($config['plugins'], 'myplugin');

Enabling PGP support

The Enigma plugin can be used to enable PGP support. The Enigma plugin is part of the roundcube code and no installation is required. To enable the plugin:

  • Open a Web terminal

  • Add the following lines to /app/data/customconfig.php:

    array_push($config['plugins'], 'enigma');
    $config['enigma_pgp_homedir'] = '/app/data/enigma';
  • Create the directory where enigma will save the PGP keys on the server:
    mkdir /app/data/enigma
    chown www-data:www-data /app/data/enigma
  • New PGP keys can be created or existing ones can be imported in Settings -> PGP Keys

  • When composing new mail, you will see an Encryption icon in the tool bar.