Option to add specific files or directories to add backup
The current backup tool has a great option to exclude specific files from backup. Thats a great feature to have. My suggestion would be have a similar option in which an administrator can specify files or directories to include backups.
Use case:
As a server administrator I use custom settings for certain services like Roundcube, Postfix, Dovecot and SpamAssasin. I like to add the custom configuration files from these services to my backup in case of a sever recovery or server migration.
No need for Plesk to also restore those files. I'll do that manually. Just an option include specify files and directories to a backup.
An option to include specific files and directories would make my life as administrator a bit easier. Especially for setting up new servers.

Thank you for your input! We will consider this functionality in upcoming releases if it is popular. Everyone, please continue voting for this feature if you consider it important.
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IG