I have sieve working for incoming messages. I would also love to run sieve for delivered messages that are being moved between mailboxes on the server (for the same account).
For example. I have mail history spanning a decade or two. Many mail clients have troubles with mailboxes of that size. I want to split it into years/months. I know Thunderbird can do that automatically but many other clients can not. Specifically, I'm not aware of any iOS mail client that can do that. Anyway, I'd like to move any message that enters Archives mailbox to be further filtered into Arthives// mailbox.
I use Dovecot 2 as my IMAP server. How can I do that?