Added basic EmailSender draft

pom.xml

@@ -44,6 +44,11 @@
 			<artifactId>uoa-user-management</artifactId>
 			<version>2.0.0-SNAPSHOT</version>
 		</dependency>
+		<dependency>
+			<groupId>javax.mail</groupId>
+			<artifactId>mail</artifactId>
+			<version>1.4</version>
+		</dependency>
 	</dependencies>
 
 </project>

src/main/java/eu/dnetlib/openaire/usermanagement/email/EmailSender.java

@@ -0,0 +1,70 @@
+package eu.dnetlib.openaire.usermanagement.email;
+
+import org.apache.log4j.Logger;
+
+import javax.mail.*;
+
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+import java.util.Properties;
+
+/**
+ * Created by kiatrop on 9/10/2017.
+ */
+public class EmailSender {
+
+    private static String username;
+    private static String password;
+    private static String host;
+    private static String port;
+    private static String from;
+
+    Logger logger = Logger.getLogger(EmailSender.class);
+
+    public void sendEmail(String recipient, String subject, String body) {
+
+        // Get system properties
+        Properties properties = System.getProperties();
+        properties.setProperty("mail.smtp.host", host);
+        properties.put("mail.smtp.port", port);
+        properties.put("mail.smtp.auth", "true"); //enable authentication
+        properties.put("mail.smtp.starttls.enable", "true");
+
+        Session session = javax.mail.Session.getInstance(properties,
+            new Authenticator() {
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+
+        try {
+            // Create a default MimeMessage object.
+            MimeMessage message = new MimeMessage(session);
+
+            // Set From: header field of the header.
+            message.setFrom(new InternetAddress(from));
+
+            // Set To: header field of the header.
+            message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipient));
+
+            // Set Subject: header field
+            message.setSubject(subject);
+
+            // For simple text setText() can be used instead of setContent()
+
+            // Send the actual HTML message, as big as you like
+            message.setContent(body, "text/html");
+
+            // Send message
+            Transport.send(message);
+            logger.debug("Sent message successfully....\n");
+
+        } catch (AddressException ae) {
+            logger.error("Email could not be send.", ae);
+
+        } catch (MessagingException me) {
+            logger.error("Email could not be send.", me);
+        }
+    }
+}