Printing an mbox

Hi,

I have an email mbox with about 500 messages in it that I'd like to
print. Are there any command-line tools that I can use that take an
mbox as an input (or the individual mails split with formail) and
pretty-print them to a postscript file?

I was thinking of something like hypermail to convert it to HTML, but
there's too many additional modifications involved. I wished
Thunderbird would enable you to highlight multiple email messages and
print them all to one file (a postscript printer file), but it
doesn't.

Thanks for any ideas.
Best regards,
Alex