Zimbra Archiving and Discovery is an optional feature that enables you to archive messages that were delivered to or sent by ZCS and to search across mailboxes.
The installation of the archiving feature provides the ZCS discovery tool (also known as cross mailbox search) and sets the attributes that allow archiving to be enabled on the Zimbra MTAs.
Archiving is configured on a per account basis. Each account enabled for archiving requires a Zimbra archive license. When archiving is enabled for an account, a copy of all email from or to that account is forked at the MTA, and a copy of the message is delivered to a predefined archive mailbox. The archiving process is transparent to account users.
