Managing a high-volume e-mail system using traditional tools can be a demanding and costly task. That’s why Zimbra wants to rewrite the book on enterprise messaging. “It’s a clean-slate view of the world,” says CEO Satish Dharmaraj.

The Zimbra e-mail platform is Web-based, so all administration happens centrally, at the servers. But Zimbra is not just another form of Web mail, Dharmaraj says. Its use of AJAX (Asynchronous JavaScript and XML) technology provides local caching and a sophisticated client UI, so users collaborate in a familiar way, reminiscent of Microsoft Outlook.

In fact, users can still use programs such as Outlook, Apple Mail, and Mozilla Thunderbird to access e-mail (Zimbra is working on an offline client, too). The product’s Web UI gets it noticed, but there’s a lot going on beneath the surface.

Mail data is managed through hierarchical storage, so individual mailboxes can be restored and managed -- no more restoring an entire mail directory to retrieve one user’s files. To reduce storage costs, Zimbra lets IT keep current mail on a high-availability storage system and move older messages to cheaper storage. Zimbra manages the flow of data among the storage systems, so users see a unified message list no matter where the actual messages are stored.

Zimbra integrates with a range of other software. The server indexes about 200 file formats, allowing users to perform free-form searches of all e-mail content, including attachments -- particularly useful for litigation discovery, Dharmaraj notes. Plus, Zimbra’s Zimlets technology allows IT to develop connectors to other applications; for example, users can receive purchase orders via e-mail, then have a Zimlet update the PO system automatically. The company provides pre-configured connectors to Salesforce.com, Oracle Purchase Order, SugarCRM, and Cisco and Asterisk IP telephony systems.

More recently, Zimbra has developed ALE (AJAX Linking and Embedding), a technology that allows users to embed applets into e-mail. For example, users can share a live spreadsheet in e-mail, rather than sending copies back and forth. Dharmaraj says that with ALE, the promise of collaboration via e-mail systems will finally be realized.

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