Giving the following error:

WARNING: StandardWrapperValve[org.javaee7.javamail.definition.AnnotatedEmailServlet]: Servlet.service() for servlet org.javaee7.javamail.definition.AnnotatedEmailServlet threw exception
java.lang.RuntimeException: com.sun.mail.smtp.SMTPSendFailedException: 530-5.5.1 Authentication Required. Learn more at
530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 qf7sm13437126pac.14 - gsmtp
at org.javaee7.javamail.definition.AnnotatedEmailServlet.processRequest(AnnotatedEmailServlet.java:131)
at org.javaee7.javamail.definition.AnnotatedEmailServlet.doGet(AnnotatedEmailServlet.java:151)