Images: Zimbra Collaboration Suite 4.5

Zimbra is an open-source, Web-based alternative to existing mail servers and clients such as Microsoft Exchange and Outlook.

Inbox - View messages as conversation threads or individually, with message text preview.

Click on any image to expand it.

Credit: Zimbra, Inc.

Conversation - See all messages in a thread - inbox, sent, filed, even trash - in one view.

Click on any image to expand it.

Credit: Zimbra, Inc.

Themes - Select your own color and style.

Click on any image to expand it.

Credit: Zimbra, Inc.

Yahoo Map

Click on any image to expand it.

Credit: Zimbra, Inc.

Mail Identities - Set multiple identities and signatures for sending messages.

Click on any image to expand it.

Credit: Zimbra, Inc.

Contacts - Add contacts directly from email; mouseover to view details.

Click on any image to expand it.

Credit: Zimbra, Inc.

Calendar - See all of your scheduled appointments and their status; mouseover for full details.

Click on any image to expand it.

Credit: Zimbra, Inc.

Documents - Rich spreadsheet authoring; share them in email or on a Wiki.

Click on any image to expand it.

Credit: Zimbra, Inc.

Admin UI - "Member Of" domains tab.

Click on any image to expand it.

Credit: Zimbra, Inc.

Zimlet Extensions - Easily manage and deploy Zimlets across your server environment.

Click on any image to expand it.

Credit: Zimbra, Inc.