sendemail.java

Send Email using gmail as smtp server

import java.security.Security;
import java.util.Properties;
 
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
 
public class SendEmail {
 
	private static final String SMTP_HOST_NAME = "smtp.gmail.com";
 
	private static final String SMTP_PORT = "465";
 
	private static final String emailMsgTxt = "Test Message Contents";
 
	private static final String emailSubjectTxt = "A test from gmail";
 
        //GMail always uses your e-mail as the "from."  Probably for Spam reasons
	private static final String emailFromAddress = ""; // sender's email id
 
	private static final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
 
	private static final String[] sendTo = { };//list of receivers email id's
 
	public static void main(String args[]) throws Exception {
 
		Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
 
		new SendEmail().sendSSLMessage(sendTo, emailSubjectTxt, emailMsgTxt,
				emailFromAddress);
		System.out.println("Sucessfully Sent mail to All Users");
	}
 
	public void sendSSLMessage(String recipients[], String subject,
			String message, String from) throws MessagingException {
		boolean debug = true;
 
		Properties props = new Properties();
		props.put("mail.smtp.host", SMTP_HOST_NAME);
		props.put("mail.smtp.auth", "true");
		props.put("mail.debug", "true");
		props.put("mail.smtp.port", SMTP_PORT);
		props.put("mail.smtp.socketFactory.port", SMTP_PORT);
		props.put("mail.smtp.socketFactory.class", SSL_FACTORY);
		props.put("mail.smtp.socketFactory.fallback", "true");
 
		Session session = Session.getDefaultInstance(props,
			new javax.mail.Authenticator() {
				protected PasswordAuthentication getPasswordAuthentication() {
					return new PasswordAuthentication(sender's email id, password);//must have value of email id and password
				}
			}
		);
 
		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);
 
		// Setting the Subject and Content Type
		msg.setSubject(subject);
 
		{
			Multipart multipart = new MimeMultipart("related");
			{
				Multipart newMultipart = new MimeMultipart("alternative");
				BodyPart nestedPart = new MimeBodyPart();
				nestedPart.setContent(newMultipart);
				multipart.addBodyPart(nestedPart);
				{
					BodyPart part = new MimeBodyPart();
					part.setText("text message");
					newMultipart.addBodyPart(part);
					
					part = new MimeBodyPart();
					part.setContent("html message", "text/html");
					newMultipart.addBodyPart(part);
				}
			}
			BodyPart part = new MimeBodyPart();
			part.setText("text (base64 image may go here)");
			multipart.addBodyPart(part);
			
			msg.setContent(multipart);
		}
		Transport.send(msg);
	}
}