CsWebmail is yet another Web mail application. It
features support for IMAP, NNTP, and SMTP,
procmail, rich text mail composing, backup
abilities, a Clam AntiVirus wrapper, and an
intuitive GUI.
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.