diff -r dcf0eedfc1a3 -r d189ee25cf9d emailservices/nmclientapi/inc/nmapiengine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailservices/nmclientapi/inc/nmapiengine.h	Tue Aug 31 15:04:17 2010 +0300
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ */
+
+#ifndef NMAPIENGINE_H
+#define NMAPIENGINE_H
+
+#include "nmcommon.h"
+#include "nmapiprivateclasses.h"
+
+class NmApiDataPluginFactory;
+
+namespace EmailClientApi
+{
+class NmApiMailbox;
+class NmApiFolder;
+class NmApiMessageEnvelope;
+}
+
+class NmApiEngine : public QObject
+{
+    Q_OBJECT
+public:
+    static NmApiEngine* instance();
+    static void releaseInstance(NmApiEngine *&engine);
+
+    void listMailboxes(QList<EmailClientApi::NmApiMailbox> &mailboxList);
+
+    void listFolders(const quint64 mailboxId, QList<EmailClientApi::NmApiFolder> &folderList);
+    void listEnvelopes(const quint64 mailboxId, const quint64 folderId, 
+	                   QList<EmailClientApi::NmApiMessageEnvelope> &messageEnvelopeList);
+
+    bool getEnvelopeById(
+        const quint64 mailboxId,
+        const quint64 folderId,
+        const quint64 envelopeId,
+        EmailClientApi::NmApiMessageEnvelope &envelope);
+		
+    bool getMailboxById(const quint64 mailboxId, EmailClientApi::NmApiMailbox &mailbox);
+
+    void startCollectingEvents();
+    
+    signals:
+    /*!
+       It contains info about event in emailstore.
+       
+       \arg Contains info about event and related object (message or mailbox list)
+     */
+    void emailStoreEvent(NmApiMessage message);
+
+private slots:
+    void mailboxChangedArrived(NmMailboxEvent, const QList<NmId> &mailboxIds);
+    void messageChangedArrived(
+        NmMessageEvent messageEvent,
+        const NmId &folderId,
+        const QList<NmId> &messageIds,
+        const NmId &mailboxId);
+
+private:
+    NmApiEngine();
+    virtual ~NmApiEngine();
+
+private:
+    static NmApiEngine *mInstance;//!<Static instance of NmApiEngine. There can be only one instance of engine
+    static quint32 mReferenceCount;//!<Count of refences to engine instance
+
+    NmApiDataPluginFactory *mFactory;//!<Plugin factory. Is needed to get plugins for emails
+};
+
+#endif /* NMAPIENGINE_H */