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 8654345..38a4359 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
@@ -1511,7 +1511,6 @@ public class GWTWorkspaceServiceImpl extends RemoteServiceServlet implements GWT
 				
 				fileModel.setParentFileModel(parent);
 			}
-			
 
 			workspaceLogger.trace("list parents return size: "+listParents.size());
 			
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 df1cc1a..a285268 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
@@ -63,10 +63,12 @@ public class NotificationsProducer {
 			@Override
 			public void run() {
 				
+				gcubeLogger.trace("Send notify folder sharing is running...");
+				  
 				for (InfoContactModel infoContactModel : listContacts) {
 					try{
 						//NOTIFIES ONLY THE USERS THAT ARE DIFFERENT FROM CURRENT USER
-//						if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
+						if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
 							
 							gcubeLogger.trace("Send notify folder sharing for user "+infoContactModel.getId());
 							
@@ -79,7 +81,7 @@ public class NotificationsProducer {
 							
 							if(!notify)
 								gcubeLogger.error("An error occured when notify user: "+infoContactModel.getId());
-//						}
+						}
 					}catch (Exception e) {
 						gcubeLogger.error("An error occured in notifyFolderSharing ", e);
 						e.printStackTrace();
@@ -105,38 +107,128 @@ public class NotificationsProducer {
 			  @Override
 			  public void run() {
 				  
-				  printContacts(listContacts);
+//				  printContacts(listContacts);
+				  gcubeLogger.trace("Send notify folder un share is running...");
 				  
 				  for (InfoContactModel infoContactModel : listContacts) {
 						try{
 
 							//NOTIFIES ONLY THE USERS THAT ARE DIFFERENT FROM CURRENT USER
-//							if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
+							if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
 							
 								gcubeLogger.trace("Send notify folder un share user "+infoContactModel.getId());
 				
 								//DEBUG
-								System.out.println("Send notify folder un share user "+infoContactModel.getId());
+//								System.out.println("Send notify folder un share user "+infoContactModel.getId());
 								
 								boolean notify = notificationsMng.notifyFolderRemovedUser(infoContactModel.getId(), sharedFolder, userId);
 								
 								if(!notify)
 									gcubeLogger.error("An error occured when notify user: "+infoContactModel.getId());
-//							}
+							}
 						}catch (Exception e) {
 							gcubeLogger.error("An error occured in notifyFolderSharing ", e);
 							e.printStackTrace();
 						}
 					}
 				  
-				  gcubeLogger.trace("un share notifications is completed");
-				  System.out.println("un share folder completed");
+				  gcubeLogger.trace("notify of un share notifications is completed");
+			  }
+
+		}.start();
+	}
+	
+	
+	
+	/**
+	 * Runs a new thread to notify the contacts passed in input
+	 * @param listContacts
+	 * @param sharedFolder
+	 */
+	public void notifyAddedItemToSharing(final List<InfoContactModel> listContacts, final WorkspaceFolder sharedFolder) {
+
+		
+		new Thread() {
+			  @Override
+			  public void run() {
+				  
+//				  printContacts(listContacts);
+				  gcubeLogger.trace("Send notify added item in sharedfolder is running...");
+				  
+				  for (InfoContactModel infoContactModel : listContacts) {
+						try{
+
+							//NOTIFIES ONLY THE USERS THAT ARE DIFFERENT FROM CURRENT USER
+							if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
+							
+								gcubeLogger.trace("Send notify added item in sharedfolder + "+sharedFolder.getName()+" for user "+infoContactModel.getId());
+				
+								//DEBUG
+//								System.out.println("Send notify folder un share user "+infoContactModel.getId());
+								
+								boolean notify = notificationsMng.notifyAddedItem(infoContactModel.getId(), sharedFolder);
+								
+								if(!notify)
+									gcubeLogger.error("An error occured when notify user: "+infoContactModel.getId());
+							}
+						}catch (Exception e) {
+							gcubeLogger.error("An error occured in notifyAddedItemToSharing ", e);
+							e.printStackTrace();
+						}
+					}
+				  
+				  gcubeLogger.trace("notigy of added item in shared folder is completed");
+			  }
+
+		}.start();
+	}
+	
+	
+	
+	/**
+	 * Runs a new thread to notify the contacts passed in input
+	 * @param listContacts
+	 * @param sharedFolder
+	 */
+	public void notifyRemovedItemToSharing(final List<InfoContactModel> listContacts, final WorkspaceFolder sharedFolder) {
+
+		
+		new Thread() {
+			  @Override
+			  public void run() {
+				  
+//				  printContacts(listContacts);
+				  gcubeLogger.trace("Send notify remove item in sharedfolder is running...");
+				  
+				  for (InfoContactModel infoContactModel : listContacts) {
+						try{
+
+							//NOTIFIES ONLY THE USERS THAT ARE DIFFERENT FROM CURRENT USER
+							if(infoContactModel.getId().compareTo(userId)!=0){ //TODO remove this comment
+							
+								gcubeLogger.trace("Send notify remove item in sharedfolder + "+sharedFolder.getName()+" for user "+infoContactModel.getId());
+				
+								//DEBUG
+//								System.out.println("Send notify folder un share user "+infoContactModel.getId());
+								
+								boolean notify = notificationsMng.notifyRemovedItem(infoContactModel.getId(), sharedFolder);
+								
+								if(!notify)
+									gcubeLogger.error("An error occured when notify user: "+infoContactModel.getId());
+							}
+						}catch (Exception e) {
+							gcubeLogger.error("An error occured in notifyRemovedItemToSharing ", e);
+							e.printStackTrace();
+						}
+					}
+				  
+				  gcubeLogger.trace("notify of removed item in shared folder is completed");
 			  }
 
 		}.start();
 	}
 
-	
+	//DEBUG
 	private void printContacts(List<InfoContactModel> listContacts){
 		
 		System.out.println("Print contacts");
@@ -164,6 +256,8 @@ public class NotificationsProducer {
 		
 		
 		NotificationsProducer feeder = new NotificationsProducer(session);
+		
+	
 	}
 
 }