I host my own mail server using Postfix and Dovecot on a virtual ubuntu server. In order to keep on top of my inbox, I use Popfile on the server to sort emails into categorized folders in my IMAP mailbox.
Now I want to forward all email that Popfile puts into that specific folder to somebody else. As far as I unterstand it, a filtering framework such as Sieve evaluates the processing rules only on delivery.
Is it possible to somehow make the server watch a folder for emails to refilter? Or is there another elegant approach to solve my problem that I have not considered yet?