An example API to rival Groovy's mail API Cf. https://groups.google.com/d/msg/lescastcodeurs/TRONQ4Mo-fE/hKhnr6gMuyMJ for context

MailBuilder.java

package com.moandjiezana.mailapi;


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

import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class MailBuilder {
  
  private String from;
  private String to;
  private String subject;
  private String body;
  
  public static MailBuilder from(String email) {
    return new MailBuilder(email);
  }
  
  public MailBuilder to(String... to) {
    for (String to1 : to) {
      this.to += to1 + ";";
    }
    return this;
  }
  
  public MailBuilder subject(String subject) {
    this.subject = subject;
    return this;
  }
  
  public MailBuilder body(String body) {
    this.body = body;
    return this;
  }

  public void send() {
    Properties properties = new Properties();
    Session session = Session.getDefaultInstance(properties);
    MimeMessage message = new MimeMessage(session);
    try {
      message.setFrom(new InternetAddress(from));
      message.setRecipients(RecipientType.TO, InternetAddress.parse(to));
      message.setSubject(subject);
      message.setText(body);
      message.setSentDate(new Date());
      Transport.send(message);
    } catch (AddressException e) {
      throw new RuntimeException(e);
    } catch (MessagingException e) {
      throw new RuntimeException(e);
    }
  }
  
  private MailBuilder(String from) {
    this.from = from;
  }
}