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mail-count /

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mail-count

This is a small program that reads an mbox file and counts messages in
it by quarter. It requires ruby-mbox (which requires Ruby 1.9).

To use:

./mail-count.rb <mbox-file>

I used IMAP Grab <http://www.daylightpirates.org/index.php/Programs/ImapGrab>
to fetch the email in question.