Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface.
Roundcube is pre-configured for use with Cloudron Email.
Users can login with their email and password to access their mailbox. If the
Cloudron has two domains,
example2.com, the user can login
firstname.lastname@example.org. Aliases can be added as identities
under Roundcube settings.
The roundcube app does not support adding domains that are not managed in Cloudron. Consider using Rainloop app as an alternative.
Custom config can be placed in
/app/data/customconfig.php using the File Manager.
An out of office / vacation mail message can be setup using Sieve filters.
A vacation message can be set in
Add filter ->
Vacation message action.
Forwarding all emails
To forward all emails to an external mail, setup a Sieve filter in
Add a filter ->
Plugins can be installed from
plugin release tarballs. Cloudron package does not support installing plugins via
Composer since that involves editing
composer.json which makes automatic updates
Upload the release tarball of the plugin using the File Manager into
/app/data/pluginsand extract it. After extract, you might need to prettify the directory name. For example, rename
contextmenu. Make a note of this directory name since it required below.
Change the ownership of the extracted plugin to
www-datausing the File Manager.
Add the plugin to
/app/data/customconfig.php. The name below must match the name of the directory in the first step.
- Some plugin release tarballs do not contain dependancies and have to be installed via
composerrequires a lot of RAM for it's resolution mechanism. For this reason, first bump the memory limit of the app to 2GB (you can reset back the memory limit after plugin installation). Open a Web Terminal and run the following:
# cd /app/data/plugins/<plugin> # composer install --no-dev # chown -R www-data:www-data .
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:
- Add the following lines to
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
- When composing new mail, you will see an Encryption icon in the tool bar.
Changing the title
Add the following lines to
/app/data/customconfig.php using the File Manager:
$config['product_name'] = 'My Hosting Company';
Skins can be installed as follows:
Extract the skin using the File Manager into
Change the ownership of the extracted skin to
Set the new skin as the default skin by adding this line in
$config['skin'] = 'newskin_directory_name';
Customizing CSS and logo
To customize CSS and logo, it's best to create a copy of an existing skin and make changes as needed.
- Open a Web terminal:
# cd /app/data/skins # cp -Lr larry customskin ... make changes in customskin ... # chown -R www-data:www-data customskin
- Set the new skin as the default skin by adding this line in
$config['skin'] = 'customskin';
By default, the search field only searches the current folder. To search across all folders,
- To increase the upload size, edit
/app/data/customconfig.php. Note that Roundcube only uses 1/3rd of the size below for the attachment.
$config['max_message_size'] = '100M';
post_max_size = 75M upload_max_filesize = 75M
- Adjust the mail server's max mail size accordingly.
Be sure to restart the app after making the above changes.