OpenWebMail is a full-featured Webmail, address book, calendar, and Webdisk system that is designed to manage very large mail folder files in a quick and memory efficient way.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
A new webdisk module was added, supporting basic file operation like copy, move, delete, online archive listing/compression/decompression, thumbnail, file download/upload, file name/content search, and attachment copying between messages and webdisk. SSH terminal support, calendar color event support, and shout-cut key support were added. The openwebmail-tool.pl utility was improved. A serious secuity bug was fixed. Many minor enhancement and bugfixes were made.