package com.android.mdw.demo;

import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import android.util.Log;

public class EnviarEmail {
    public static String emailEnvio = "XXX@gmail.com";
    public static String passwordEmailEnvio = "@XXX";

    public void EnviarEmail(String Mensaje, String Asunto, String email) {
        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.port", "587");

        Session session = Session.getInstance(props,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(emailEnvio, passwordEmailEnvio);
                    }
                });

        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress(emailEnvio));
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(email));
            message.setSubject(Asunto);
            message.setText(Mensaje);

            Transport.send(message);

        } catch (MessagingException e) {
            Log.w("ERROR", "No se ha podido enviar el email de confirmación.");
        }
    }
}

package com.android.mdw.demo;

public class EmailAviso {
    public void EmailAviso ()  {
        String Mensaje = "CUERPO";
        String Asunto = "ASUNTO";
        String email = "AQUIENVA@gmail.com";

        EnviarEmail EnviarEmail = new EnviarEmail();
        EnviarEmail.EnviarEmail(Mensaje, Asunto, email);

    }
}

boolean PRUEBA=true;
boolean PRUEBA1=true;

if(PRUEBA==true && PRUEBA1==true) {
EmailAviso EmailAviso = new EmailAviso();
EmailAviso.EmailAviso();
}