import  java.util.Properties;
 import  javax.mail.*;
 import  javax.mail.internet.*;
 import  javax.servlet.http.*;

 public   class  Email  extends  HttpServlet {

   public   void  sendMessage(String to, String from, String subject, String emailContent)
  {
      Properties properties = System.getProperties( );
      properties.put("mail.smtp.host", "smtp.balabal.com");
      Session session = Session.getDefaultInstance(properties);
      Message mailMsg =  new  MimeMessage(session);

      InternetAddress[] addresses =  null ;

      try {

      addresses = InternetAddress.parse(to, false);
      mailMsg.setRecipients(Message.RecipientType.TO, addresses);
       mailMsg.setContent(emailContent,"html");
      mailMsg.setFrom( new  InternetAddress(from));

      mailMsg.setSubject(subject);

     mailMsg.setText(emailContent);

    
      Transport.send(mailMsg);
     }
       catch  (Exception e) {
     
   }
}
}

 package  com;
 import  java.util.Properties;
 import  javax.mail.*;
 import  javax.mail.internet.*;

 public   class  Email {

   public   void  sendMessage(String to, String from, String subject, String emailContent)
  {
      Properties properties = System.getProperties( );
      properties.put("mail.smtp.host", "smtp.gfhjf.com");
      Session session = Session.getDefaultInstance(properties);
      Message mailMsg =  new  MimeMessage(session);

      InternetAddress[] addresses =  null ;
      try {
      addresses = InternetAddress.parse(to, false);
      mailMsg.setRecipients(Message.RecipientType.TO, addresses);

      mailMsg.setFrom( new  InternetAddress(from));

      mailMsg.setSubject(subject);

      mailMsg.setContent(emailContent,"text/html");
      System.out.println(mailMsg.getContentType());

     Transport.send(mailMsg);
     }
       catch  (Exception e) {
     
   }
}
}