Available on a free to try basis, for a limited duration of 30 days, ISMail is a mail server application that has been designed and developed for Windows systems. You can implement this utility in Windows 98, 2000, NT, Me, and XP versions. Designed and developed by InstantServers, this tool can be implemented for Webmail using POP3, ESMTP, and IMAP4. This application offers support for multiple domains, account quotas, unlimited mail accounts, open relay protection, log files, Windows services, and mailing groups. It also offers various security features such as anti-virus scanners and anti-spam filters. The utility also comes with online help to assist implementation of account migration, server monitoring, and testing of network and server configurations.