How to Send Mail in Java

This example demonstrates how to send a mail in Java with a package javax.mail-1.6.2.jar. These steps include creating a session of a configuration of parameters and sending a message of object.

Cods

package com.beginner.examples;

import java.util.Date;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendEmailExample {

	public static void main(String[] args) {

		// Parameter configuration
		Properties pro = new Properties();

		pro.put("mail.smtp.host", "smtp.xxx.com");
		pro.put("mail.smtp.auth", "true");
		pro.put("mail.smtp.prot", "25");

		// Get the session object
		Session session = Session.getInstance(pro);

		// Create mail through a session
		Message message = new MimeMessage(session);

		try {
			// Email address of the sender
			message.setFrom(new InternetAddress("xxxxxx.com"));

			// Set the address of the recipient
			message.setRecipient(Message.RecipientType.CC, new InternetAddress("xxxxxxxxxx.com"));
			// (you can set multiple recipients)
			// message.setResipients(Message.RecipientType.CC,InternetAddress.parse("xxxx.com,yyyy.com,zzzz.com",false);

			// Set the subject of your email
			message.setSubject("Java");

			// Set the content of the message
			// You can also use the setContent() method
			message.setText("I love Java");

			message.setSentDate(new Date());

			// Get the transport object through the session
			Transport transport = session.getTransport("smtp");

			transport.connect("Address of sender", "Email third-party server authorization code");

			transport.sendMessage(message, message.getAllRecipients());

			System.out.println("Send a success！");

			transport.close();

		} catch (Exception e) {

			System.out.println(e);
		}

	}

}

package com.beginner.examples;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
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 SendEmailWithAttachment {

	public static void main(String[] args) throws Exception {

		// Parameter configuration
		Properties pro = new Properties();

		pro.setProperty("mail.smtp.host", "smtp server");
		pro.setProperty("mail.smtp.auth", "true");
		pro.setProperty("mail.smtp.prot", "25");

		// Get the session object
		Session session = Session.getInstance(pro);

		

		// Create a Message
		Message message = createMessage(session, "[email protected]", "[email protected]");

		//Get transfer object
		Transport transport = session.getTransport("smtp");

		//Establish a connection
		transport.connect("[email protected]", "password");

		//Send the message
		transport.sendMessage(message, message.getAllRecipients());
		
		System.out.println("Done");

		transport.close();

	}

	static Message createMessage(Session session, String from, String to) {

		// Create a Message through the session
		Message message = new MimeMessage(session);

		MimeBodyPart part = new MimeBodyPart();

		// Multipart is used to store multiple parts
		Multipart multipart = new MimeMultipart();

		FileDataSource source = new FileDataSource("test.html");

		try {

			// This method provides the mechanism to set this body part's content.
			part.setDataHandler(new DataHandler(source));

			part.setFileName(source.getName());

			// Add bodyPart
			multipart.addBodyPart(part);

			// Set this body message's content
			message.setContent(multipart);

			message.setSubject("JAVA_Email");

			message.setFrom(new InternetAddress(from));

			message.setRecipient(Message.RecipientType.CC, new InternetAddress(to));

		} catch (MessagingException e) {

			e.printStackTrace();
		}

		return message;
	}

}

References

Imported packages in Java documentation: