Automattic / jetpack

		// Do what is necessary for each module.

		switch ( $module ) {

			case 'monitor':

				// Load the class to use the method. If class can't be found, do nothing.

				if ( ! class_exists( 'Jetpack_Monitor' ) && ! include_once( Jetpack::get_module_path( $module ) ) ) {

					return false;

				}

				$value = Jetpack_Monitor::user_receives_notifications( false );

				break;

			case 'post-by-email':

				// Load the class to use the method. If class can't be found, do nothing.

				$value = Jetpack_Monitor::user_receives_notifications( false );

				break;

			case 'post-by-email':

				// Load the class to use the method. If class can't be found, do nothing.

				if ( ! class_exists( 'Jetpack_Post_By_Email' ) && ! include_once( Jetpack::get_module_path( $module ) ) ) {

					return false;

				}

				$value = Jetpack_Post_By_Email::init()->get_post_by_email_address();

				if ( $value === null ) {

					$value = 'NULL'; // sentinel value so it actually gets set

				}

				break;

		}

		// Normalize value to boolean.