* </p>
 * <p>
 * The extracted text is obtained from the nodes selected by the {@code targetNodePath} XPath expression.
 * The default value for {@code targetNodePath} is "//HTML/BODY | //@alt | //@title", which selects the body of the HTML document,
 * as well as the alt and title attributes.
 * </p>
 * <p>
 * The class uses {@link DOMParser} to parse HTML documents and {@link XPathAPI} to execute XPath queries.

 *
 */
public class EmlExtractor extends AbstractExtractor {
    /** Array of day of week abbreviations used for parsing received dates */
    private static final String[] DAY_OF_WEEK = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(EmlExtractor.class);

    /** Properties used for mail processing */