[Dovecot] IMAP and POP3 operations log per user

Hi,

I'd like to have a log per user, and protocol (imap+pop3), where this log would tell me/save the message sender+subject+operation (deleted, marked to expunge/other/was read/other).

Is there something similar to this that already exists?

If not is there something like this on the TODO/whishlist?

Thanks in advanced,

Jorge Bastos