Integrating Maildrop with Postfix/ClamAV/Spamassasin/Maildir

Hello list,

I have a working mail setup with Postfix and av/spam filtering through
amavis-new. I'd like to be able to filter mail into various folders
for mailing lists, spam, and other various things. I installed
Maildrop on my system and i configured Postfix to call it via the
"mailbox_command = /usr/local/bin/maildrop -d ${USER}" option. I have
googled around extensively, and I can't seem to figure out how to get
maildrop to deliver to a Maildir. I am using system users, so
everything is located in /usr/home/$USER/Maildir/. I can't seem to
find any example maildroprc file in my installation, or any examples
online. What is the best way to do this and create folders if they
don't exist? Eg, a "Spam" folder to move mail detected by spamassassin
into.

Also, as I mentioned, I currently use amavis-new for clamav and
spamassassin filtering. Would it be better to use maildrop for such
filtering? Would this give me any advantages over amavis-new?

This is my first major email system configuration, and my first time
using any type of MDA.

Thank you for your help.

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