App Builder User's Guide Extending Application Capabilities 19 Extending Application Capabilities Learn about how to extend application capabilities including managing email, running background PL/SQL, utilizing plug-ins, and understanding jQuery support. Sending Email from an ApplicationTo configure and manage email in Oracle Application Express, an Instance administrator must sign in to Oracle Application Express Administration Services. Implementing Plug-insCreate plug-ins to declaratively extend, share, and reuse the built-in types available with Oracle Application Express. Understanding jQuery and jQuery UI SupportOracle Application Express includes the jQuery 3.1.1 and jQuery UI 1.12.x. Manually Refreshing Oracle Application Express ComponentsUse the apex.region().refresh() method to refresh the content of a region that supports being refreshed. See Also: Oracle Application Express API Reference "Deploying an Application"