diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
index 0d88b59..3e91df4 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
@@ -60,6 +60,7 @@ import org.gcube.portlets.user.workspace.server.notifications.NotificationsProdu
 import org.gcube.portlets.user.workspace.server.notifications.NotificationsUtil;
 import org.gcube.portlets.user.workspace.server.resolver.UriResolverReaderParameter;
 import org.gcube.portlets.user.workspace.server.shortener.UrlShortener;
+import org.gcube.portlets.user.workspace.server.util.DiffereceBeetweenInfoContactModel;
 import org.gcube.portlets.user.workspace.server.util.HttpRequestUtil;
 import org.gcube.portlets.user.workspace.server.util.StringUtil;
 import org.gcube.portlets.user.workspace.server.util.UserUtil;
@@ -3064,9 +3065,36 @@ public class GWTWorkspaceServiceImpl extends RemoteServiceServlet implements GWT
 			
 			if(item!=null && item.getType().equals(WorkspaceItemType.SHARED_FOLDER)){
 				WorkspaceSharedFolder sharedFolder = (WorkspaceSharedFolder) item;
+				
+				//retrieving old administrators list
+				GWTWorkspaceBuilder builder = getGWTWorkspaceBuilder();
+				workspaceLogger.info("Retrieving old administator/s..");
+				List<InfoContactModel> oldAdmins = builder.buildGxtInfoContactsFromPortalLogins(sharedFolder.getAdministrators());
+				workspaceLogger.info("Retrieving old administator/s are/is: "+oldAdmins.size());
+				
 				workspaceLogger.info("Setting administators:");
 				printList(listContactLogins);	
 				sharedFolder.setAdmins(listContactLogins);
+				
+				workspaceLogger.info("Converting new administator/s..");
+				List<InfoContactModel> newAdmins = builder.buildGxtInfoContactsFromPortalLogins(listContactLogins);
+				NotificationsProducer np = getNotificationProducer();
+				
+				workspaceLogger.info("Sending notifications downgrade/upgrade administator/s..");
+				DiffereceBeetweenInfoContactModel diff1 = new DiffereceBeetweenInfoContactModel(oldAdmins, newAdmins);
+				List<InfoContactModel> contactsDowngrade = diff1.getDifferentsContacts();
+				
+				for (InfoContactModel infoContactModel : contactsDowngrade) {
+					np.notifyAdministratorDowngrade(infoContactModel, sharedFolder);
+				}
+				
+				DiffereceBeetweenInfoContactModel diff2 = new DiffereceBeetweenInfoContactModel(newAdmins, oldAdmins);
+				List<InfoContactModel> contactsUpgrade = diff2.getDifferentsContacts();
+				
+				for (InfoContactModel infoContactModel : contactsUpgrade) {
+					np.notifyAdministratorUpgrade(infoContactModel, sharedFolder);
+				}
+				
 				return true;
 				
 			}else
diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/notifications/NotificationsProducer.java b/src/main/java/org/gcube/portlets/user/workspace/server/notifications/NotificationsProducer.java
index 673fd16..2f606d3 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/notifications/NotificationsProducer.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/notifications/NotificationsProducer.java
@@ -631,7 +631,86 @@ public class NotificationsProducer {
 	
 	}
 	
+
+	/**
+	 * Runs a new thread to notify the contacts passed in input
+	 * @param userToNotify
+	 * @param sharedFolder
+	 */
+	public void notifyAdministratorUpgrade(final InfoContactModel userToNotify, final WorkspaceSharedFolder sharedFolder){
+
+		new Thread() {
+			  @Override
+			  public void run() {
+				  
+//				  printContacts(listContacts);
+				  logger.trace("Send notifies administrator upgrade is running...");
+				  if(userToNotify==null || userToNotify.getLogin()==null){
+					  logger.warn("Notification abort user to notify is null...");
+					  return;
+				  }
+				  
+				  if(sharedFolder==null){
+					  logger.warn("Notification abort sharedFolder to notify is null...");
+					  return;
+				  }
+				  try{
+					  String login = userToNotify.getLogin();
+					  logger.trace("Send notifies administrator upgrade for login: "+login);
+					  
+					  boolean notify = notificationsMng.notifyAdministratorUpgrade(login, sharedFolder);
+					  logger.trace("Notification sent correctly? "+notify);
+				  }catch (Exception e) {
+						logger.error("An error occured in notifyAdministratorUpgrade ", e);
+				  }
+				
+				  
+				  logger.trace("notifies of administrator upgrade completed");
+			  }
+
+		}.start();
 	
+	}
+	
+	/**
+	 * Runs a new thread to notify the contacts passed in input
+	 * @param userToNotify
+	 * @param sharedFolder
+	 */
+	public void notifyAdministratorDowngrade(final InfoContactModel userToNotify, final WorkspaceSharedFolder sharedFolder){
+
+		new Thread() {
+			  @Override
+			  public void run() {
+				  
+//				  printContacts(listContacts);
+				  logger.trace("Send notifies administrator Downgrade is running...");
+				  if(userToNotify==null || userToNotify.getLogin()==null){
+					  logger.warn("Notification abort user to notify is null...");
+					  return;
+				  }
+				  
+				  if(sharedFolder==null){
+					  logger.warn("Notification abort sharedFolder to notify is null...");
+					  return;
+				  }
+				  try{
+					  String login = userToNotify.getLogin();
+					  logger.trace("Send notifies administrator Downgrade for login: "+login);
+					  
+					  boolean notify = notificationsMng.notifyAdministratorDowngrade(login, sharedFolder);
+					  logger.trace("Notification sent correctly? "+notify);
+				  }catch (Exception e) {
+						logger.error("An error occured in notifyAdministratorDowngrade ", e);
+				  }
+				
+				  
+				  logger.trace("notifies of administrator Downgrade completed");
+			  }
+
+		}.start();
+	
+	}
 
 	//DEBUG
 	private void printContacts(List<InfoContactModel> listContacts){