This product includes software developed by
The Apache Software Foundation (http://www.apache.org/).

Originally developed by Justin Erenkrantz, eBuilt.

The SLL sort in mbox_sort.c is based on the public-domain algorithm by
Philip J. Erdelsky (pje@acm.org).  You may find the algorithm and
notes at: <http://www.efgh.com/software/llmsort.htm>

The threading code in mbox_thread.c is based Jamie Zawinski's
description of the Netscape 3.x threading algorithm at:
<http://www.jwz.org/doc/threading.html>

The 'mime_decode_qp' and `mime_decode_b64' routine are taken from
metamail 2.7, which is copyright (c) 1991 Bell Communications
Research, Inc. (Bellcore).

This product includes software developed by Edward Rudd and Paul
Querna (http://www.outoforder.cc/).