Roundcube problem "Can't delete messages or move to folder" after deleting the emails

[Euk-George]

In Roundcube after deleting the emails still stay in Inbox and throws the following error message.

Can't save messages to folders.

Solution:

SSH to server with the root user and open the file main.inc.php in your favorite editor.

#vi /usr/local/cpanel/base/3rdparty/roundcube/config/main.inc.php

Change the following line from

// move messages to this folder when deleting them
// leave blank if they should be deleted directly
$rcmail_config['trash_mbox'] = '';

To

// move messages to this folder when deleting them
// leave blank if they should be deleted directly
$rcmail_config['trash_mbox'] = 'Trash';