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The Code I'm Using to send a simple mail import javax.mail.*; import javax.mail.internet.*; import java.util.*; import java.io.*; import javax.activation.DataHandler; import javax.activation.FileDataSource; public class SendMailUsingAuthentication { private static final String SMTP_HOST_NAME = "smtp.gmail.com"; private static final String SMTP_AUTH_USER = "myemail@gmail.com"; private static final String SMTP_AUTH_PWD = "mypassword"; public static void main(String args[]) throws Exception { } public void postMail( String recipients[ ], String subject,String message , String from) throws MessagingException { try { boolean debug = false; Properties props = new Properties(); props.put("mail.smtp.host", SMTP_HOST_NAME); props.put("mail.smtp.starttls.enable", "true"); props.put("mail.smtp.auth", "true"); Authenticator auth = new SMTPAuthenticator(); Session session = Session.getDefaultInstance(props, auth); session.setDebug(debug); Message msg = new MimeMessage(session); InternetAddress addressFrom = new InternetAddress(from); msg.setFrom(addressFrom); InternetAddress[] addressTo = new InternetAddress[recipients.length]; for (int i = 0; i < recipients.length; i++) { addressTo[i] = new InternetAddress(recipients[i]); } msg.setRecipients(Message.RecipientType.TO, addressTo); msg.setSubject(subject); msg.setContent(message, "text/plain"); Transport.send(msg); } catch (Throwable e) { e.printStackTrace(); } } /** * SimpleAuthenticator is used to do simple authentication * when the SMTP server requires it. */ private class SMTPAuthenticator extends javax.mail.Authenticator { public PasswordAuthentication getPasswordAuthentication() { String username = SMTP_AUTH_USER; String password = SMTP_AUTH_PWD; return new Pa

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