POP3 from command line

Hi,
I'm looking for a tool that can connect to a POP3 server, download
email and save the email as files. It must be possible to configure
everything through a config file and/or on the command line. If the
tool parsed the emails and split them into header, body, and
attachments would be great but is not crucial.
Basically I look for something like fetchmail just that I want emails
to go to a directory as files and not run another SMTP server. I have
though about still using fetchmail and access its Mbox or maildir
(whatever it uses) but this is not really what I want.

Anybody knows a tool that roughly matches my description?

Cheers,
Christian