Zimbra Offline Mode allows you to use the Zimbra Web Client (ZWC) and access your data without network connectivity.
For example, if there is no server connectivity or server connectivity is lost, ZWC automatically transitions to “offline mode”. When server connectivity is restored, ZWC automatically reverts back to “online mode”.
The offline mode uses HTML5, which uses a caching capability
that can be considered a super set of the normal browser caching. This
feature is enabled by your system administrator.
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