Enabling the Check Box for the Web Client

If Show selection checkbox for selecting email, contact, voicemail items in a list view for batch operations is enabled, when users view email messages, contacts, and tasks lists in the Content pane, a check box displays for each item. Users can select items and then perform an action such as mark as read/unread, move to a specific folder, drag and drop to a folder, delete, and tag for all those selected items.