Users of GAPE will need to have their domain administrators activate the service before they can install the offline features.

Users of Google Apps Standard Edition will need to sign-in to Gmail and click "Settings." From there, they will click the "Labs" tab and select "Enable" next to the Offline Gmail entry. Users will then click "Save Changes" to complete the install.

After the install, the Gmail client will have an "Offline" link, which is used to begin the synchronization process with the Gmail server.

The feature will be made available in the coming days to consumer users of Gmail.

Google officials said that business users would soon get offline access to Google Calendar, but they did not provide an exact date.