Limiting rules to mailbox folders

Hi there,

I have set up a rule to move emails that are older than 31 days from a couple of mailboxes into a common folder.

I would like to limit the rule to the source mailboxes’ inboxes, but that doesn’t seem possible; the rule always applies to the whole mailbox, including all subfolders (= “Bereich” = “Scope” = can select mailboxes only, but no mailbox folders).

Or is there a smarter way to achieve what I am aiming at?

Best regards

Christian