Sending email using Java Mail API

In this tutorial we will see how to send email using Java Mail API. We are using Gmail SMTP host for sending email in the below sample code.

Mainly we need 2 jar files to implement Java Mail API. Those jar's are

• activation-1.0.2.jar
• mail-1.4.1.jar

Below code have tested along with above jar files. 

import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendEmailViaGmail {
 public static void main(String[] args) {
  
  // To address
  String to = "to@gmail.com";
  // If any CC email ids
  String cc = "cc@abcmail.com";
  // If any BCC email ids
  String bcc = "bcc@abcmail.com";
  // Email Subject
  String subject = "Java Discover";
  // Email content
  String emailText = "Hi All, Welcome to Java Discover";

  // Sending Email using Gmail SMTP
  sendEmail(to, cc, bcc, subject, emailText);
 }

 public static void sendEmail(String to, String cc, String bcc, String subject, String emailText) {
  
  // From address (Need Gmail ID)
  String from = "from@gmail.com";
  // Password of from address
  String password = "frompassword";
  // Gmail host address
  String host = "smtp.gmail.com";
  
  Properties props = System.getProperties();
  props.put("mail.smtp.host", host);
  props.put("mail.smtp.socketFactory.port", "465");
  props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
  props.put("mail.smtp.auth", "true");
  props.put("mail.smtp.port", "465");
  props.put("mail.smtp.user", from);
  props.put("password", password);

  Session session = Session.getDefaultInstance(props, null);

  MimeMessage msg = new MimeMessage(session);
  try {
   msg.setFrom(new InternetAddress(from));
   
   // Adding To address
   msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false));
   // Adding CC email id
   msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc, false));
   // Adding BCC email id
   msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(bcc, false));

   msg.setSubject(subject);
   msg.setText(emailText);
   
   Transport transport = session.getTransport("smtp");
   transport.connect(host, from, password);
   transport.sendMessage(msg, msg.getAllRecipients());
   transport.close();
   
   System.out.println("Email sent successfully.....");
   
  } catch (AddressException e) {
   e.printStackTrace();
  } catch (MessagingException e) {
   e.printStackTrace();
  }
 }
}

IMP:

Suppose if you are getting exception while running above like,

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

then valid SSL certificate is missing in the machine which your running. Follow the steps given in link and try again.