[exim] exim with maildrop

hello all

help anybody even use maildrop or procmail with exim ?

i wanna to use maildrop to handle message

i have already use exim and amavis and spamassassin

but i need use maildrop or procmail after amavis give message back exim , then exim give message to maildrop (or procmail )

then maildrop (or procmail) analyze message should to deliver to mailbox or deliver to mysql

how can i arrive to do this in /usr/exim/configure ...

please help , thanks a lot:)