diff --git a/stores/__tests__/settings-push-dnd.test.ts b/stores/__tests__/settings-push-dnd.test.ts
new file mode 100644
index 000000000..52df90530
--- /dev/null
+++ b/stores/__tests__/settings-push-dnd.test.ts
@@ -0,0 +1,17 @@
+import { describe, expect, it, vi } from 'vitest';
+
+const writePushPreferences = vi.hoisted(() => vi.fn(async () => {}));
+vi.mock('@/lib/push-preferences', () => ({ writePushPreferences }));
+
+import { useSettingsStore } from '../settings-store';
+
+describe('do not disturb and push notifications (CO-13)', () => {
+  it('keeps pushed notifications silent while do not disturb is on', () => {
+    useSettingsStore.setState({ emailNotificationsEnabled: true, emailNotificationSound: true, doNotDisturb: false });
+    writePushPreferences.mockClear();
+    useSettingsStore.getState().updateSetting('doNotDisturb', true);
+    expect(writePushPreferences).toHaveBeenLastCalledWith({ sound: false });
+    useSettingsStore.getState().updateSetting('doNotDisturb', false);
+    expect(writePushPreferences).toHaveBeenLastCalledWith({ sound: true });
+  });
+});
diff --git a/stores/settings-store.ts b/stores/settings-store.ts
index 3a9cd7cb4..688c0a1d4 100644
--- a/stores/settings-store.ts
+++ b/stores/settings-store.ts
@@ -2131,7 +2131,9 @@ if (typeof window !== 'undefined') {
 
   // The service worker shows push notifications without this store, so it
   // reads the sound preference from its own Cache store (#1289).
-  const pushSound = (s: SettingsState) => s.emailNotificationsEnabled && s.emailNotificationSound;
+  // Do not disturb can't keep a push from showing (browsers require one per
+  // push), but it keeps it silent.
+  const pushSound = (s: SettingsState) => s.emailNotificationsEnabled && s.emailNotificationSound && !s.doNotDisturb;
   let lastPushSound = pushSound(store);
   void writePushPreferences({ sound: lastPushSound });
   useSettingsStore.subscribe((state) => {