public   class  MailerTest  extends  TestCase
    {
    	 public   void  testSendArchive(){
    	    
    	    Mailer m =  new  Mailer();
    	    File file =  null ;
    	     try {
    	    file =  new  File("C:\\DEVELOP\\Tomcat 5.5\\webapps\\dds\\WEB-INF\\classes\\tmp\\net.zip");
    	    }  catch  (Exception e){
    	        e.printStackTrace();
    	    }
    	  
    	    m.sendArchive("sender@sender.ru", "reciever@receiver.ru","рассылка","message body text",file);

    	    
    	    
    	    }
    }

 package  mailer;

 import  java.sql.*;
 import  java.util.*;
 import  java.io.*;
 import  javax.mail.*;
 import  javax.mail.internet.*;
 import  javax.activation.*;

 public   class  Mailer {
MimeMessage message;

 public  Mailer() {
	Properties props =  new  Properties();
	props.put("mail.smtp.host","mail.server.ru");
	Session session=Session.getInstance(props, null );
	message= new  MimeMessage(session);
}


 public   void  sendArchive(String from, String to, String subject, String messageBody, File file) {
	 try  {
		message.setFrom( new  InternetAddress(from));
		message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false));
		message.setSubject(subject,"koi8-r");

		Multipart multipart =  new  MimeMultipart();
		MimeBodyPart messageBodyPart =  new  MimeBodyPart();
		messageBodyPart.setText(messageBody,"koi8-r");
		multipart.addBodyPart(messageBodyPart);

		messageBodyPart =  new  MimeBodyPart();
		DataSource source =  new  FileDataSource(file);
		messageBodyPart.setDataHandler( new  DataHandler(source));
		messageBodyPart.setFileName("the.zip");
		multipart.addBodyPart(messageBodyPart);
		message.setContent(multipart);


		Transport.send(message);
	}  catch (MessagingException e) {
		System.out.println(e.getMessage());
	}
}

}