Sending email (Java, Spring)

EmailTester.java

package net.twasink.email;

import java.io.IOException;

import javax.activation.DataSource;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import javax.mail.util.ByteArrayDataSource;
import org.junit.Test;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

public class EmailTester {

  @Test public void sendEmail() {
    JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
    mailSender.setHost("<Mail server>");
    
    SimpleMailMessage msg = new SimpleMailMessage();
    msg.setFrom("robertdw@twasink.net");
    msg.setSubject("Test Email");
    
    msg.setTo("robertdw@twasink.net");
    msg.setText("This is a test email");
    
    mailSender.send(msg);
  }
  
  @Test public void sendEmailWithAttachment() throws MessagingException, IOException {
    JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
    mailSender.setHost("<Mail server>");

    MimeMessage msg = mailSender.createMimeMessage();
    MimeMessageHelper helper = new MimeMessageHelper(msg, true);
    helper.setFrom("robertdw@twasink.net");
    helper.setSubject("Test Email with attachment");
    
    helper.setTo("robertdw@twasink.net");
    helper.setText("This is a test email");
    
    String csv = "\"Column1\",\"Column2\"\n"
        + "\"A\",\"B\"\n"
        + "\"C\",\"D\"\n"
        + "\"E\",\"F\"\n"
        + "\"G\",\"H\"\n";
    DataSource dataSource = new ByteArrayDataSource(csv, "text/csv");
    helper.addAttachment("test-file.csv", dataSource);
    
    mailSender.send(msg);

  }
}