Remove mail, older than .... days

Apple mail as the ability to set the removale dat on messages in the Spam mailbox.
For example, delete messages older than one week.

Is this possibility also available for the SpamSieve Spam mailbox?
I couldn’t find it in neither Mail rules, SpamSieve prefs nor SpamSieve settings in Mail.

If this is not the case, can it be added in a future release of SpamSieve?
This feature should enhance the ‘Apple feel’ even more!
(and keeps mailboxes clean even simpler)

Please see this page.