javax.mail.AuthenticationFailedException is thrown while sending email in java

Question

I am beginner in java and I want to send an email in java, for that I am using this code in Java. But my code is throwing an exception, and I need a heads-up why…

This is stack trace of exception:

javax.mail.AuthenticationFailedException: 534-5.7.14 <https://accounts.google.com/ContinueSignIn?sarp=1&scc=1&plt=AKgnsbsNX 534-5.7.14 No6jJbDc4l7fZ_WLdBD0sNHIIp_nLvplRMm0bYFBnZBF_XOyVvNSdd1FenDZJPwBTFQyRH 534-5.7.14 lriPK3myMm-dXkW3zK0-6XpO7BzI8hfRcByG1k7YiVzXlddTvs7QhjtgCWNcrzMBuPhoof 534-5.7.14 GjME2TgYzXJVHz5MV98nRnr_kq-kP7RmgOtX3IQHLwM5E8QGBC9-2THVQr_Ch_U0-1nZsc 534-5.7.14 yoPuNEw> Please log in via your web browser and then try again. 534-5.7.14 Learn more at 534 5.7.14 https://support.google.com/mail/bin/answer.py?answer=78754 wr6sm26888533wjc.24 - gsmtp      at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:892)     at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:814)     at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:728)     at javax.mail.Service.connect(Service.java:364)     at javax.mail.Service.connect(Service.java:245)     at SendEmail.sendFromGMail(SendEmail.java:50)     at SendEmail.main(SendEmail.java:18) sent 

This is my code

import java.util.*; import javax.mail.*; import javax.mail.internet.*;  public class SendEmail {      private static String USER_NAME = "me";     private static String PASSWORD = "xyz";     private static String RECIPIENT = "[email protected]";      public static void main(String[] args) {         String from = USER_NAME;         String pass = PASSWORD;         String[] to = { RECIPIENT };         String subject = "Java send mail example";         String body = "Welcome to JavaMail!";          sendFromGMail(from, pass, to, subject, body);         System.out.println("sent");     }      private static void sendFromGMail(String from, String pass, String[] to, String subject, String body) {         Properties props = System.getProperties();         String host = "smtp.gmail.com";         props.put("mail.smtp.starttls.enable", "true");         props.put("mail.smtp.host", host);         props.put("mail.smtp.user", from);         props.put("mail.smtp.password", pass);         props.put("mail.smtp.port", "587");         props.put("mail.smtp.auth", "true");          Session session = Session.getDefaultInstance(props);         MimeMessage message = new MimeMessage(session);          try {             message.setFrom(new InternetAddress(from));             InternetAddress[] toAddress = new InternetAddress[to.length];              for( int i = 0; i < to.length; i++ ) {                 toAddress[i] = new InternetAddress(to[i]);             }              for( int i = 0; i < toAddress.length; i++) {                 message.addRecipient(Message.RecipientType.TO, toAddress[i]);             }              message.setSubject(subject);             message.setText(body);             Transport transport = session.getTransport("smtp");             transport.connect(host, from, pass);             transport.sendMessage(message, message.getAllRecipients());             transport.close();         }         catch (AddressException ae) {             ae.printStackTrace();         }         catch (MessagingException me) {             me.printStackTrace();         }     } } 

Answer 1

I had the same problem! Google prevents access for less secure apps.

This is how I solved it:

• Log in from your browser to that email account.
• Go to https://www.google.com/settings/security/lesssecureapps
• You will see Turn off or Turn on. Click on Turn on, then try your code again. It should work now.