diff --git a/internal/services/imapservice/conflicts_test.go b/internal/services/imapservice/conflicts_test.go
index 3c531e77..451306e4 100644
--- a/internal/services/imapservice/conflicts_test.go
+++ b/internal/services/imapservice/conflicts_test.go
@@ -763,11 +763,11 @@ func TestInternalLabelConflictResolver_ConflictingNonAPILabel_ZeroCount(t *testi
 
 	mockLabelProvider := new(mockLabelNameProvider)
 	mockClient := new(mockAPIClient)
-	mockIDProvider := new(mockIDProvider)
+	mockGluonIDProvider := new(mockIDProvider)
 	mockReporter := new(mockReporter)
 	mockCountProvider := new(mockMailboxCountProvider)
 
-	mockIDProvider.On("GetGluonID", "addr-1").Return("gluon-id-1", true)
+	mockGluonIDProvider.On("GetGluonID", "addr-1").Return("gluon-id-1", true)
 
 	// Mock mailbox fetch to return conflicting mailbox
 	mockLabelProvider.On("GetUserMailboxByName", mock.Anything, "gluon-id-1", []string{"Folders"}).
@@ -783,14 +783,15 @@ func TestInternalLabelConflictResolver_ConflictingNonAPILabel_ZeroCount(t *testi
 	connector.SetAddrIDTest("addr-1")
 	mockCountProvider.On("GetUserMailboxCountByInternalID",
 		mock.Anything,
-		"addr-1",
+		"gluon-id-1",
 		imap.InternalMailboxID(123)).
 		Return(0, nil)
 
 	connector.SetMailboxCountProviderTest(mockCountProvider)
+	connector.SetGluonIDProviderTest(mockGluonIDProvider)
 	connectors := []*imapservice.Connector{connector}
 
-	manager := imapservice.NewLabelConflictManager(mockLabelProvider, mockIDProvider, mockClient, mockReporter, ffProviderFalse{})
+	manager := imapservice.NewLabelConflictManager(mockLabelProvider, mockGluonIDProvider, mockClient, mockReporter, ffProviderFalse{})
 	resolver := manager.NewInternalLabelConflictResolver(connectors)
 
 	// API labels don't contain the conflicting label ID
@@ -834,10 +835,11 @@ func TestInternalLabelConflictResolver_ConflictingNonAPILabel_PositiveCount(t *t
 	connector.SetAddrIDTest("addr-1")
 	mockCountProvider.On("GetUserMailboxCountByInternalID",
 		mock.Anything,
-		"addr-1",
+		"gluon-id-1",
 		imap.InternalMailboxID(123)).
 		Return(10, nil)
 
+	connector.SetGluonIDProviderTest(mockIDProvider)
 	connector.SetMailboxCountProviderTest(mockCountProvider)
 	connectors := []*imapservice.Connector{connector}
 
@@ -874,6 +876,7 @@ func TestInternalLabelConflictResolver_ConflictingAPILabelSameName(t *testing.T)
 
 	connector := &imapservice.Connector{}
 	connector.SetAddrIDTest("addr-1")
+	connector.SetGluonIDProviderTest(mockIDProvider)
 	connector.SetMailboxCountProviderTest(mockCountProvider)
 	connectors := []*imapservice.Connector{connector}
 
@@ -939,6 +942,7 @@ func TestNewInternalLabelConflictResolver_KillSwitchEnabled(t *testing.T) {
 
 	connector := &imapservice.Connector{}
 	connector.SetAddrIDTest("addr-1")
+	connector.SetGluonIDProviderTest(mockIDProvider)
 	connectors := []*imapservice.Connector{connector}
 
 	manager := imapservice.NewLabelConflictManager(mockLabelProvider, mockIDProvider, mockClient, mockReporter, ffProviderTrue{})
diff --git a/internal/services/imapservice/connector.go b/internal/services/imapservice/connector.go
index dcdd900c..707f273d 100644
--- a/internal/services/imapservice/connector.go
+++ b/internal/services/imapservice/connector.go
@@ -73,6 +73,7 @@ type Connector struct {
 	syncState   *SyncState
 
 	mailboxCountProvider mailboxCountProvider
+	gluonIDProvider      gluonIDProvider
 }
 
 var errNoSenderAddressMatch = errors.New("no matching sender found in address list")
@@ -89,6 +90,7 @@ func NewConnector(
 	showAllMail bool,
 	syncState *SyncState,
 	mailboxCountProvider mailboxCountProvider,
+	gluonIDProvider gluonIDProvider,
 ) *Connector {
 	userID := identityState.UserID()
 
@@ -124,6 +126,7 @@ func NewConnector(
 		syncState:   syncState,
 
 		mailboxCountProvider: mailboxCountProvider,
+		gluonIDProvider:      gluonIDProvider,
 	}
 }
 
@@ -920,7 +923,16 @@ func (s *Connector) SetAddrIDTest(addrID string) {
 }
 
 func (s *Connector) GetMailboxMessageCount(ctx context.Context, mailboxInternalID imap.InternalMailboxID) (int, error) {
-	return s.mailboxCountProvider.GetUserMailboxCountByInternalID(ctx, s.addrID, mailboxInternalID)
+	gluonID, ok := s.gluonIDProvider.GetGluonID(s.addrID)
+	if !ok {
+		return 0, errors.New("could not retrieve Gluon ID for connector address ID")
+	}
+	return s.mailboxCountProvider.GetUserMailboxCountByInternalID(ctx, gluonID, mailboxInternalID)
+}
+
+// SetGluonIDProviderTest - sets the relevant gluon ID provider. Should only be used for testing.
+func (s *Connector) SetGluonIDProviderTest(provider gluonIDProvider) {
+	s.gluonIDProvider = provider
 }
 
 // SetMailboxCountProviderTest - sets the relevant provider. Should only be used for testing.
diff --git a/internal/services/imapservice/service.go b/internal/services/imapservice/service.go
index a5a0527d..394caf4f 100644
--- a/internal/services/imapservice/service.go
+++ b/internal/services/imapservice/service.go
@@ -541,6 +541,7 @@ func (s *Service) buildConnectors() (map[string]*Connector, error) {
 			s.showAllMail,
 			s.syncStateProvider,
 			s.serverManager,
+			s.gluonIDProvider,
 		)
 
 		return connectors, nil
@@ -559,6 +560,7 @@ func (s *Service) buildConnectors() (map[string]*Connector, error) {
 			s.showAllMail,
 			s.syncStateProvider,
 			s.serverManager,
+			s.gluonIDProvider,
 		)
 	}
 
diff --git a/internal/services/imapservice/service_address_events.go b/internal/services/imapservice/service_address_events.go
index f6690b7a..ca00974e 100644
--- a/internal/services/imapservice/service_address_events.go
+++ b/internal/services/imapservice/service_address_events.go
@@ -158,6 +158,7 @@ func addNewAddressSplitMode(ctx context.Context, s *Service, addrID string) erro
 		s.showAllMail,
 		s.syncStateProvider,
 		s.serverManager,
+		s.gluonIDProvider,
 	)
 
 	if err := s.serverManager.AddIMAPUser(ctx, connector, connector.addrID, s.gluonIDProvider, s.syncStateProvider); err != nil {