IDLE DONE on "Still here"

app/src/main/java/com/sun/mail/imap/protocol/IMAPProtocol.java

@@ -3270,6 +3270,16 @@ public class IMAPProtocol extends Protocol {
 	boolean done = false;		// done reading responses?
 	notifyResponseHandlers(responses);
 
+    if (r.isUnTagged() && r.isOK()) // Still here
+        try {
+            DataOutputStream output = (DataOutputStream) getOutputStream();
+            output.writeBytes("DONE");
+            output.write(CRLF);
+            output.flush();
+        } catch (IOException ex) {
+            throw new ProtocolException("IDLE/DONE", ex);
+        }
+
 	if (r.isBYE()) // shouldn't wait for command completion response
 	    done = true;
 

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -973,13 +973,6 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                         if (e.getMessageType() == StoreEvent.NOTICE) {
                             EntityLog.log(ServiceSynchronize.this, account.name + " notice: " + message);
 
-                            // Store NOOP
-                            try {
-                                iservice.getStore().isConnected();
-                            } catch (Throwable ex) {
-                                Log.e(ex);
-                            }
-
                             if ("Still here".equals(message) && !isTransient(account)) {
                                 long now = new Date().getTime();
                                 if (now - start < STILL_THERE_THRESHOLD)