Just wrote a script to strip attachments from email, as I want email access to be fast ( no waiting for large attachments to download ). Since it reads the entire email into memory, don't use this on emails larger than available memory ;). That said, it works well in a procmail recipe:

 
MSG_MAX_SIZE=102400
MSG_URL=http://www.yourdomain.tld/mime/
MSG_DIR=/var/www/www.youdomain.tld/mime/.
:0 fw
* > $MSG_MAX_SIZE
| $HOME/bin/mime_strip_to_dir.py