I have cPanel Version 11.24.4-RELEASE
and I can't find anymore the spambox button as described in the documentation
"SpamAssassin is now: ENABLED"
3. If you want your Spam emails to be filtered into a separate folder, you can set the system to send all emails marked as Spam to a Spam Box. To set this up, click on the Go Back link and continue on to Step 4 below.
4. You will see the following message in the "Spam Box" section of the page:
"Spam Box is currently (DISABLED or ENABLED)."
is there another way to manage the spambox and empty the spam messages folder?
The spam folder is just an folder/directory that can be accessed via IMAP and this all 3 supported webmail apps and desktop clients.