This is a code sample of how to use the EMMR Java Emailer Library. The code above is included as a complete NetBeans project here http://sourceforge.net/projects/javaemailer/files/0.1b/sample1%20%28netbeans%20project%29.zip/download
I added the code in this topic as an easy way to quickly visualize the code. I will add other code samples in a near futur…

/*
 * To use the EMMR Java Emailer Library, after creating a new Java application
 * project, add the JavaMail Library to your project. You can download it from
 * here : http://www.oracle.com/technetwork/java/index-138643.html
 * After that, add the EMMR Java Emailer Library (JavaEmailer.jar) to the project.
 * Now your Java application project is ready to realize mass mailing operations...
 * See the main function for a simple code creating an Email object and initializing
 * the SenderEngine to send it to illimited recipients.
 * Check this url for other samples :
 * https://sourceforge.net/projects/javaemailer/files/
 * Check also the accompagned JavaDoc for more details about how to use
 * advanced features of the EMMR Java Emailer Library
 */
package ejelsimple;
// Import the ejel package
import ejel.*;
/**
 *
 * @author emmr.rida
 */
public class Main {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        /* 
         * First, create the Email object that will contain all needed data
         * to send the email to recipients
         */
        boolean wantDeliveryReceipt = false;
        Email email = new Email("SenderName", "replyto_address@hostname", wantDeliveryReceipt, "Email subject", "Plain text message", "Html code message");
        /*
         * Create the sender engine object
         */
        int recipientsPerEmail = 1;
        int senderThreadsCount = 1;
        SenderEngine engine = new SenderEngine(email, recipientsPerEmail, senderThreadsCount);
        /*
         * Add one ore more EmailAccount objects
         * Param1 : Email account login
         * Param2 : Email account password
         * Param3 : Email account SMTP Server address
         * Param4 : SMTP Server port number
         * Param5 : Use SSL connection if true
         * Param6 : SMTP Server needs authentication
         * Param7 : Frequency of the send operation per hour. 0 for unlimited
         * Param8 : Set to true to avoid simultanous connections to SMTP Server
         */
        engine.addEmailAccount(new EmailAccount("email_account@hostname", "password", "smtp_address.hostname", 25, false, true, EmailAccount.emailsPerHour_NoLimit, true));
        /*
         * Add recipients to the sender engine
         */
        engine.addRecipients(new Recipient[] {
            new Recipient("email1@hostname"),
            new Recipient("email2@hostname"),
            new Recipient("email3@hostname"),
            new Recipient("email4@hostname")
        });
        /*
         * Start the sender engine
         */
        engine.startEngine();
        /*
         * Wait for the engine to terminate the send operation
         */
        while(!engine.isFinished());
        /*
         * Sender engine has finished the mass mailin operation
         */
    }
}

Best regards :)