Just as there is an option in mailserver configuration called "Trash Expire Time", we need a new option for "Spam Expire Time" and thus be able to delete the e-mails stored as spam automatically.
As a server administrator I would like cPanel to allow me to define an auto-deletion of Spam from a users's Spam Box to prevent unnecessary disk space being taken up by users who fail to empty their Spam Box regularly.
This feature request would add a setting in WHM "Tweak Settings" where an admin can specify the desired time limit for any emails in the Spam Box. For example:
Delete emails in Spam Box older than [ x ] days. (Default to 90 days.)