diff -r ae34e1715e21 -r a8c646b56683 emailuis/nmailuiengine/inc/nmdataplugininterface.h
--- a/emailuis/nmailuiengine/inc/nmdataplugininterface.h	Thu Aug 05 21:09:09 2010 +0300
+++ b/emailuis/nmailuiengine/inc/nmdataplugininterface.h	Mon Aug 23 23:32:31 2010 +0300
@@ -192,6 +192,8 @@
         const QList<quint64> &messageIds, 
         const NmId &sourceFolderId,
         const NmId &destinationFolderId) = 0;
+
+    virtual int getSignature(const NmId &mailboxId, QString *&signature) = 0;
 };
 
 Q_DECLARE_INTERFACE(NmDataPluginInterface, "sf.app.commonmail.emailuis.nmailuiengine.NmDataPluginInterface/1.0")