Zimbra:-messaging and collaboration

Zimbra™ Collaboration Suite is a full-featured messaging and collaboration
solution that includes email, address book, calendaring, tasks, and Web
document authoring.

The Zimbra Collaboration Suite is designed to provide an end-to-end mail
solution that is scalable and highly reliable. The messaging architecture is built
with well-known open-system technology and standards and is composed of a
mail server application and a client interface.

The architecture includes the following core advantages:

• Open source integrations. Linux®, Jetty, Postfix, MySQL®, OpenLDAP®.
• Uses industry standard open protocols. SMTP, LMTP, SOAP, XML,
IMAP, POP.
• Modern technology design. Java, JavaScript thin client, DHTML.
• Horizontal scalability. Because each mailbox server includes its own data
store, message store, and set mailbox accounts, you don’t change
anything on existing servers in order to scale the system. To scale for
additional mail accounts, add more servers.
• Browser based client interface. Zimbra Web Client gives users easy
access to all the ZCS features
• Administration console to manage accounts and servers.

Core Functionality

The Zimbra Collaboration Suite is an innovative messaging and collaboration
application that offers the following state-of-the-art messaging and
collaboration solutions:
• Email
• Group Calendars
• Address Books
• Task Management
• Web document management and authoring.