deliver mails to user's "Bulk" folder

[Ivan R. Sy Jr.]

hi all

I got postfix->amavisd(with ClamAV and 
SpamAssasin)->postfix->cyrus-imapd22 already running smoothly,

question now is, i want that the spam mails (already tagged in the MIME 
headers) get delivered to the user's Bulk folder? Ive already set 
autocreateinbox and autosubscribe for each user.

also how do automated clean up per user's bulk messages for emails 
delivered 30 days.

something like yahoo mail, yes.


can anyone give me some leads to this?

thanks

Ivan