How to sort outgoing mail in hmailserver?

Question

hMailServer

I want to install hmailserver in a small organization as a local mail collector and processor, as well as a mail database custodian.
I'm testing a bunch of hmailserver + thunderbird on a virtual machine.
clients must connect to the server via IMAP.
I would like all (sent letters too) correspondence with each client to be automatically moved to a separate folder.
existing mail rules and filters in Thunderbird are designed to process only incoming mail, and outgoing mail is simply put in the "sent" folder
So the question is: how can I make outgoing mail also be processed by the hmailserver sorting rules?