The developers at cPanel removed the aging option in the latest version. However, you actually don’t need to have the email address setup in Mail > Add/Remove/Manage Accounts.
Just go into cPanel > Mail > Forwarders > Add Forwarder.
In the first box you would enter ‘sales’ and then you would select the correct domain (if you have more than one domain set up). In the second box you enter [email protected].
Now, when someone emails [email protected], the email will be forwarded to [email protected]. This way, nothing will be sitting on the server taking up space and you won’t have to worry about cleaning up old emails.