diff --git a/coderd/notifications/fetcher.go b/coderd/notifications/fetcher.go
index a579275d127bf..0688b88907981 100644
--- a/coderd/notifications/fetcher.go
+++ b/coderd/notifications/fetcher.go
@@ -38,6 +38,10 @@ func (n *notifier) fetchAppName(ctx context.Context) (string, error) {
 		}
 		return "", xerrors.Errorf("get application name: %w", err)
 	}
+
+	if appName == "" {
+		appName = notificationsDefaultAppName
+	}
 	return appName, nil
 }
 
@@ -49,5 +53,9 @@ func (n *notifier) fetchLogoURL(ctx context.Context) (string, error) {
 		}
 		return "", xerrors.Errorf("get logo URL: %w", err)
 	}
+
+	if logoURL == "" {
+		logoURL = notificationsDefaultLogoURL
+	}
 	return logoURL, nil
 }
diff --git a/coderd/notifications/fetcher_internal_test.go b/coderd/notifications/fetcher_internal_test.go
new file mode 100644
index 0000000000000..a8d0149c883b8
--- /dev/null
+++ b/coderd/notifications/fetcher_internal_test.go
@@ -0,0 +1,231 @@
+package notifications
+
+import (
+	"context"
+	"database/sql"
+	"testing"
+	"text/template"
+
+	"github.com/stretchr/testify/require"
+	"go.uber.org/mock/gomock"
+	"golang.org/x/xerrors"
+
+	"github.com/coder/coder/v2/coderd/database/dbmock"
+)
+
+func TestNotifier_FetchHelpers(t *testing.T) {
+	t.Parallel()
+
+	t.Run("ok", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store:   dbmock,
+			helpers: template.FuncMap{},
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("ACME Inc.", nil)
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("https://example.com/logo.png", nil)
+
+		ctx := context.Background()
+		helpers, err := n.fetchHelpers(ctx)
+		require.NoError(t, err)
+
+		appName, ok := helpers["app_name"].(func() string)
+		require.True(t, ok)
+		require.Equal(t, "ACME Inc.", appName())
+
+		logoURL, ok := helpers["logo_url"].(func() string)
+		require.True(t, ok)
+		require.Equal(t, "https://example.com/logo.png", logoURL())
+	})
+
+	t.Run("failed to fetch app name", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store:   dbmock,
+			helpers: template.FuncMap{},
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("", xerrors.New("internal error"))
+
+		ctx := context.Background()
+		_, err := n.fetchHelpers(ctx)
+		require.Error(t, err)
+		require.ErrorContains(t, err, "get application name")
+	})
+
+	t.Run("failed to fetch logo URL", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store:   dbmock,
+			helpers: template.FuncMap{},
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("ACME Inc.", nil)
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("", xerrors.New("internal error"))
+
+		ctx := context.Background()
+		_, err := n.fetchHelpers(ctx)
+		require.ErrorContains(t, err, "get logo URL")
+	})
+}
+
+func TestNotifier_FetchAppName(t *testing.T) {
+	t.Parallel()
+
+	t.Run("ok", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("ACME Inc.", nil)
+
+		ctx := context.Background()
+		appName, err := n.fetchAppName(ctx)
+		require.NoError(t, err)
+		require.Equal(t, "ACME Inc.", appName)
+	})
+
+	t.Run("No rows", func(t *testing.T) {
+		t.Parallel()
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("", sql.ErrNoRows)
+
+		ctx := context.Background()
+		appName, err := n.fetchAppName(ctx)
+		require.NoError(t, err)
+		require.Equal(t, notificationsDefaultAppName, appName)
+	})
+
+	t.Run("Empty string", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("", nil)
+
+		ctx := context.Background()
+		appName, err := n.fetchAppName(ctx)
+		require.NoError(t, err)
+		require.Equal(t, notificationsDefaultAppName, appName)
+	})
+
+	t.Run("internal error", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetApplicationName(gomock.Any()).Return("", xerrors.New("internal error"))
+
+		ctx := context.Background()
+		_, err := n.fetchAppName(ctx)
+		require.Error(t, err)
+	})
+}
+
+func TestNotifier_FetchLogoURL(t *testing.T) {
+	t.Parallel()
+
+	t.Run("ok", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("https://example.com/logo.png", nil)
+
+		ctx := context.Background()
+		logoURL, err := n.fetchLogoURL(ctx)
+		require.NoError(t, err)
+		require.Equal(t, "https://example.com/logo.png", logoURL)
+	})
+
+	t.Run("No rows", func(t *testing.T) {
+		t.Parallel()
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("", sql.ErrNoRows)
+
+		ctx := context.Background()
+		logoURL, err := n.fetchLogoURL(ctx)
+		require.NoError(t, err)
+		require.Equal(t, notificationsDefaultLogoURL, logoURL)
+	})
+
+	t.Run("Empty string", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("", nil)
+
+		ctx := context.Background()
+		logoURL, err := n.fetchLogoURL(ctx)
+		require.NoError(t, err)
+		require.Equal(t, notificationsDefaultLogoURL, logoURL)
+	})
+
+	t.Run("internal error", func(t *testing.T) {
+		t.Parallel()
+
+		ctrl := gomock.NewController(t)
+		dbmock := dbmock.NewMockStore(ctrl)
+
+		n := &notifier{
+			store: dbmock,
+		}
+
+		dbmock.EXPECT().GetLogoURL(gomock.Any()).Return("", xerrors.New("internal error"))
+
+		ctx := context.Background()
+		_, err := n.fetchLogoURL(ctx)
+		require.Error(t, err)
+	})
+}