Vote for MailStore Server

MailStore Server is an e-mail archiving solution for SMBs. It combines storage technology with easy operation and low costs. Installed on any Windows operating system, all archiving, retrieval and maintenance tasks can be performed from one single Outlook-Style user interface. MailStore Server can archive e-mail from Microsoft Exchange Server (mailboxes, Journaling and Public Folders), Microsoft Outlook PST, Outlook Express, Windows Mail, and more…

Even unsupported e-mail systems can be archived through the built-in IMAP, POP3, EML and MBOX connectors. Additionally, MailStore server includes an SMTP and POP3 proxy server ("MailStore Proxy") which is able to archive all e-mail sent to your ISP or received from your ISP without installing anything on the client PCs. Licenses for MailStore Server start at €399 / $599 one-time fee for 25 named users. MailStore comes with its own built-in database server, so you don't have to pay extra license fees for Microsoft SQL Server or Oracle.