diff --git a/src/apps/knotesapp.cpp b/src/apps/knotesapp.cpp
--- a/src/apps/knotesapp.cpp
+++ b/src/apps/knotesapp.cpp
@@ -292,7 +292,7 @@
 
 void KNotesApp::createNote(const Akonadi::Item &item)
 {
-    if (item.hasPayload<KMime::Message::Ptr>()) {
+    if (item.hasPayload<KMime::Message::Ptr>() && !mNotes.contains(item.id())) {
         KNote *note = new KNote(m_noteGUI, item, mDebugAkonadiSearch);
         mNotes.insert(item.id(), note);
         connect(note, &KNote::sigShowNextNote,