diff --git a/src/backend/clients/event/types.ts b/src/backend/clients/event/types.ts
index d54e4abce..99036d2ac 100644
--- a/src/backend/clients/event/types.ts
+++ b/src/backend/clients/event/types.ts
@@ -552,13 +552,17 @@ export type EventMap = {
         /** Events handler runs behind whatever created it. */
         handlerDepth?: number;
     };
-    /** Every non-silent write or update, only on the node that wrote it. */
+    /**
+     * Every non-silent write or update, only on the node that wrote it. The
+     * value is the listener's own copy of what the socket carries.
+     */
     'notif.written': {
         userId: number;
         uid: string;
         type: string;
-        /** The row's app. Absent on an update, which keeps the row's own. */
-        appUid?: string | null;
+        audience: string;
+        /** The row's app; null when it names none or an update could not tell. */
+        appUid: string | null;
         value: Record<string, unknown>;
         /** An earlier notification rewritten in place. */
         updated?: true;
diff --git a/src/backend/drivers/notification/NotificationDriver.appMessage.test.ts b/src/backend/drivers/notification/NotificationDriver.appMessage.test.ts
index 712900197..52dcea270 100644
--- a/src/backend/drivers/notification/NotificationDriver.appMessage.test.ts
+++ b/src/backend/drivers/notification/NotificationDriver.appMessage.test.ts
@@ -17,7 +17,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import { afterAll, beforeAll, describe, expect, it } from 'vitest';
+import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
 import { v4 as uuidv4 } from 'uuid';
 import { makeActor, type Actor } from '../../core/actor.js';
 import { runWithContext } from '../../core/context.js';
@@ -28,6 +28,42 @@ import type { IConfig } from '../../types.js';
 import { peekRateLimit } from '../../core/http/middleware/rateLimit.js';
 import type { NotificationDriver } from './NotificationDriver.js';
 
+/**
+ * Charges to a held key wait here until the test lets them go, so two requests
+ * can both be read before either is spent. Every charge is recorded by key.
+ */
+const charges = vi.hoisted(() => ({
+    held: new Set<string>(),
+    waiting: [] as Array<() => void>,
+    made: [] as string[],
+}));
+
+vi.mock('../../core/http/middleware/rateLimit.js', async (importOriginal) => {
+    const actual =
+        await importOriginal<
+            typeof import('../../core/http/middleware/rateLimit.js')
+        >();
+    return {
+        ...actual,
+        checkRateLimit: async (key: string, ...rest: unknown[]) => {
+            if (charges.held.has(key)) {
+                await new Promise<void>((go) => charges.waiting.push(go));
+            }
+            charges.made.push(key);
+            return (
+                actual.checkRateLimit as (...a: unknown[]) => Promise<boolean>
+            )(key, ...rest);
+        },
+    };
+});
+
+const until = async (ready: () => boolean): Promise<void> => {
+    for (let i = 0; i < 400 && !ready(); i++) {
+        await new Promise((resolve) => setTimeout(resolve, 5));
+    }
+    if (!ready()) throw new Error('timed out');
+};
+
 const makeUser = async (server: PuterServer): Promise<Actor> => {
     const username = `am-${Math.random().toString(36).slice(2, 10)}`;
     const created = await server.stores.user.create({
@@ -347,6 +383,50 @@ describe('app.message with live delivery over the socket wire', () => {
         ).resolves.toMatchObject({ uid: expect.any(String) });
     });
 
+    it('spends the day window only on a request the minute window admits', async () => {
+        const holder = await makeUser(state.server);
+        const app = await makeApp(state.server, holder.user.id!);
+        const minuteKey = `notif:app-message:minute:${holder.user.id}:${app.uid}`;
+        const dayKey = `notif:app-message:day:${holder.user.id}:${app.uid}`;
+        for (let i = 0; i < 2; i++) {
+            await withActor(asApp(holder, app), () =>
+                state.driver.create(message()),
+            );
+        }
+
+        charges.held.add(minuteKey).add(dayKey);
+        charges.made.length = 0;
+        let settled = false;
+        const outcome = Promise.allSettled([
+            withActor(asApp(holder, app), () => state.driver.create(message())),
+            withActor(asApp(holder, app), () => state.driver.create(message())),
+        ]).finally(() => {
+            settled = true;
+        });
+        try {
+            // Both requests read the windows as open before either spends.
+            await until(() => charges.waiting.length === 2);
+            while (!settled) {
+                await until(() => settled || charges.waiting.length > 0);
+                charges.waiting.shift()?.();
+            }
+        } finally {
+            charges.held.clear();
+        }
+
+        const results = await outcome;
+        expect(results.map((r) => r.status).sort()).toEqual([
+            'fulfilled',
+            'rejected',
+        ]);
+        const refused = results.find((r) => r.status === 'rejected') as
+            PromiseRejectedResult | undefined;
+        expect(refused?.reason).toMatchObject({ statusCode: 429 });
+        // The refused request left the day window alone.
+        expect(charges.made.filter((k) => k === dayKey)).toEqual([dayKey]);
+        expect(await peekRateLimit(dayKey, 4, 24 * 60 * 60_000)).toBe(true);
+    });
+
     it("reads back the app's own messages and no other app's", async () => {
         const holder = await makeUser(state.server);
         const app = await makeApp(state.server, holder.user.id!);
diff --git a/src/backend/drivers/notification/NotificationDriver.ts b/src/backend/drivers/notification/NotificationDriver.ts
index 7715176af..a45ccaa57 100644
--- a/src/backend/drivers/notification/NotificationDriver.ts
+++ b/src/backend/drivers/notification/NotificationDriver.ts
@@ -340,23 +340,28 @@ export class NotificationDriver extends PuterDriver {
         });
     }
 
-    /** Both windows are read before either is spent, so a refusal costs none. */
+    /**
+     * Both windows are read before either is spent, so a refusal costs none.
+     * The minute window is spent first: it is the one most likely to run out
+     * between the read and the spend, and a refusal there leaves the day
+     * alone.
+     */
     async #withinAppMessageLimits(
         userId: number,
         appUid: string,
     ): Promise<boolean> {
         const configured = this.config.notificationAppMessageLimits ?? {};
         const all: Array<[string, number, number]> = [
-            [
-                `notif:app-message:day:${userId}:${appUid}`,
-                configured.perDay ?? APP_MESSAGE_RATE_LIMITS.perDay,
-                DAY_MS,
-            ],
             [
                 `notif:app-message:minute:${userId}:${appUid}`,
                 configured.perMinute ?? APP_MESSAGE_RATE_LIMITS.perMinute,
                 MINUTE_MS,
             ],
+            [
+                `notif:app-message:day:${userId}:${appUid}`,
+                configured.perDay ?? APP_MESSAGE_RATE_LIMITS.perDay,
+                DAY_MS,
+            ],
         ];
         const windows = all.filter(([, limit]) => limit > 0);
         for (const [key, limit, windowMs] of windows) {
diff --git a/src/backend/services/notification/NotificationService.test.ts b/src/backend/services/notification/NotificationService.test.ts
index 68f8d14af..ab7065f2a 100644
--- a/src/backend/services/notification/NotificationService.test.ts
+++ b/src/backend/services/notification/NotificationService.test.ts
@@ -3,18 +3,19 @@
  *
  * This file is part of Puter.
  *
- * Puter is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published
- * by the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ * Puter is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Affero General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+ * details.
  *
  * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * along with this program. If not, see
+ * [https://www.gnu.org/licenses/](https://www.gnu.org/licenses/).
  */
 
 import { v4 as uuidv4 } from 'uuid';
@@ -361,6 +362,7 @@ describe("NotificationService — 'notif.written'", () => {
             userId: u.id,
             uid: rows[i][0].uid,
             type: 'app.events.ended',
+            audience: 'app-user',
             appUid,
             value: { title: 'ended', type: 'app.events.ended' },
         }));
@@ -404,11 +406,82 @@ describe("NotificationService — 'notif.written'", () => {
             userId: user.id,
             uid,
             type: 'share.received',
+            audience: 'account',
+            appUid: null,
             value: { title: 'two shares', type: 'share.received' },
             updated: true,
         });
         written.stop();
     });
+
+    it("names the row's app on a rewrite", async () => {
+        const user = await makeUser();
+        const uid = uuidv4();
+        const appUid = `app-${uuidv4()}`;
+        await server.stores.notification.insert({
+            userId: user.id,
+            value: { title: 'one', type: 'share.received' },
+            uid,
+            type: 'share.received',
+            audience: 'account',
+            appUid,
+        });
+        const written = collect('notif.written');
+
+        await notifications.notifyUpdate(
+            uid,
+            user.id,
+            { title: 'two' },
+            { type: 'share.received' },
+        );
+        await waitFor(() => written.seen.length === 1);
+
+        expect(written.seen[0]).toMatchObject({ uid, appUid, updated: true });
+        written.stop();
+    });
+
+    it('hands each listener its own copy of the value', async () => {
+        const user = await makeUser();
+        const handler = (_k: string, data: unknown) => {
+            const value = (data as { value: Record<string, unknown> }).value;
+            value.title = 'changed by a listener';
+            (value.fields as Record<string, unknown>).path = '/elsewhere';
+        };
+        server.clients.event.on('notif.written', handler);
+        const pushed = collect('outer.gui.notif.message');
+        try {
+            const uid = await notifications.notify(
+                [user.id],
+                { title: 'one share', fields: { path: '/a' } },
+                { type: 'share.received' },
+            );
+            await notifications.notifyUpdate(
+                uid!,
+                user.id,
+                { title: 'two shares', fields: { path: '/b' } },
+                { type: 'share.received' },
+            );
+            await waitFor(() => pushed.seen.length === 2);
+        } finally {
+            server.clients.event.off?.('notif.written', handler);
+            pushed.stop();
+        }
+
+        expect(
+            pushed.seen.map((p) => (p as NotifPush).response.notification),
+        ).toEqual([
+            {
+                title: 'one share',
+                fields: { path: '/a' },
+                type: 'share.received',
+            },
+            {
+                title: 'two shares',
+                fields: { path: '/b' },
+                type: 'share.received',
+            },
+        ]);
+    });
 });
 
 describe('NotificationService.markAcknowledged', () => {
@@ -608,7 +681,10 @@ describe('NotificationService — shown on delivery', () => {
             { type: 'share.received' },
         );
 
-        const [row] = await server.stores.notification.listByUserId(user.id, {});
+        const [row] = await server.stores.notification.listByUserId(
+            user.id,
+            {},
+        );
         expect(row.uid).toBe(uid);
         expect(row.shown).toBeTruthy();
 
diff --git a/src/backend/services/notification/NotificationService.ts b/src/backend/services/notification/NotificationService.ts
index c12962a23..a9835c005 100644
--- a/src/backend/services/notification/NotificationService.ts
+++ b/src/backend/services/notification/NotificationService.ts
@@ -170,14 +170,16 @@ export class NotificationService extends PuterService {
                 }
 
                 if (!opts.silent) {
+                    // Listeners get their own copy; the socket sends `payload`.
                     this.clients.event.emit(
                         'notif.written',
                         {
                             userId,
                             uid,
                             type: registered.type,
+                            audience: registered.audience,
                             appUid,
-                            value: payload,
+                            value: structuredClone(payload),
                         },
                         {},
                     );
@@ -229,13 +231,21 @@ export class NotificationService extends PuterService {
             // to anything deduplicating on `event.id`.
             this.#socket().message(userId, uid, payload);
             this.#markDelivered(uid, userId);
+            const row = await this.stores.notification.getByUid(uid, {
+                userId,
+            });
+            const app = notification.app as { uid?: unknown } | undefined;
             this.clients.event.emit(
                 'notif.written',
                 {
                     userId,
                     uid,
                     type: registered.type,
-                    value: payload,
+                    audience: registered.audience,
+                    appUid:
+                        row?.app_uid ??
+                        (typeof app?.uid === 'string' ? app.uid : null),
+                    value: structuredClone(payload),
                     updated: true,
                 },
                 {},
diff --git a/src/backend/services/notification/appMessage.test.ts b/src/backend/services/notification/appMessage.test.ts
index 48d4df0f1..717362010 100644
--- a/src/backend/services/notification/appMessage.test.ts
+++ b/src/backend/services/notification/appMessage.test.ts
@@ -212,4 +212,14 @@ describe('appMessageSender', () => {
         ).toEqual({ uid: 'app-1', name: 'chat' });
         expect(appMessageSender('app-1', null)).toEqual({ uid: 'app-1' });
     });
+
+    it('caps the name at the title length, counting an emoji once', () => {
+        const long = '😀'.repeat(500);
+        const { name } = appMessageSender('app-1', { title: long });
+        expect([...name!].length).toBe(120);
+        expect(name).toBe('😀'.repeat(120));
+        expect(appMessageSender('app-1', { title: 'a'.repeat(300) }).name).toBe(
+            'a'.repeat(120),
+        );
+    });
 });
diff --git a/src/backend/services/notification/appMessage.ts b/src/backend/services/notification/appMessage.ts
index a79155b65..a13bb84a4 100644
--- a/src/backend/services/notification/appMessage.ts
+++ b/src/backend/services/notification/appMessage.ts
@@ -69,7 +69,12 @@ export const appMessageSender = (
     const name = [row?.title, row?.name].find(
         (v): v is string => typeof v === 'string' && v.trim() !== '',
     );
-    if (name !== undefined) sender.name = cleanText(name).trim();
+    if (name !== undefined) {
+        sender.name = [...cleanText(name)]
+            .slice(0, APP_MESSAGE_TITLE_MAX)
+            .join('')
+            .trim();
+    }
     const icon = row?.icon;
     if (
         typeof icon === 'string' &&
diff --git a/src/gui/src/UI/Dashboard/UIDashboardNotifications.js b/src/gui/src/UI/Dashboard/UIDashboardNotifications.js
index 1d5d6b6a1..36ff9a775 100644
--- a/src/gui/src/UI/Dashboard/UIDashboardNotifications.js
+++ b/src/gui/src/UI/Dashboard/UIDashboardNotifications.js
@@ -26,7 +26,7 @@ import {
     handleNotificationTap,
     openAppForTap,
     setPushTapHandler,
-    storedTapItem,
+    storedTapHandler,
     tapRoute,
 } from '../../helpers/notificationTap.js';
 import { showLocalBanner, startPushWorker } from '../../helpers/pushWorker.js';
@@ -498,6 +498,15 @@ export default function UIDashboardNotifications ({ $el_window, socket }) {
         void handleNotificationTap({ uid: entry.uid, notification: entry.notification, appUid: entry.appUid }, tapSurface);
     };
 
+    const actOnStored = storedTapHandler({
+        fetchRow: getNotification,
+        surface: tapSurface,
+        found: (uid) => void acknowledge(uid).catch((err) => {
+            console.warn('Could not acknowledge notification:', err);
+        }),
+        missing: () => open(),
+    });
+
     const actOnPush = async (push) => {
         await reveal_dashboard();
         if ( ! loaded ) await refresh();
@@ -506,15 +515,7 @@ export default function UIDashboardNotifications ({ $el_window, socket }) {
             actOn(entry);
             return;
         }
-        const tap = push.stored ? await storedTapItem(push.uid, getNotification) : { uid: push.uid, push };
-        if ( ! tap ) {
-            open();
-            return;
-        }
-        void acknowledge(push.uid).catch((err) => {
-            console.warn('Could not acknowledge notification:', err);
-        });
-        await handleNotificationTap(tap, tapSurface);
+        await actOnStored(push);
     };
 
     // -- Toasts -------------------------------------------------------------
diff --git a/src/gui/src/UI/UIDesktop.js b/src/gui/src/UI/UIDesktop.js
index cd6a0da91..7d8552ef2 100644
--- a/src/gui/src/UI/UIDesktop.js
+++ b/src/gui/src/UI/UIDesktop.js
@@ -51,7 +51,7 @@ import {
     handleNotificationTap,
     openAppForTap,
     setPushTapHandler,
-    storedTapItem,
+    storedTapHandler,
 } from '../helpers/notificationTap.js';
 import { showLocalBanner, startPushWorker } from '../helpers/pushWorker.js';
 import { get_app_by_uid } from '../helpers/getAppByUid.js';
@@ -251,26 +251,25 @@ async function UIDesktop (options) {
     };
 
     // The desktop has no notification list, so other types only clear.
-    const tap_notification = (tap) => handleNotificationTap(tap, {
+    const tap_surface = {
         share: (notification) => share_notification_click(notification)?.(),
         openApp: (route) => openAppForTap(route, { getApp: get_app_by_uid, launch: launch_app }),
-    });
+    };
+    const tap_notification = (tap) => handleNotificationTap(tap, tap_surface);
 
     const toasts_for = (uid) => $(elementsWithData($('.notification').get(), 'uid', uid));
 
-    setPushTapHandler(async (push) => {
-        let tap = { uid: push.uid, push };
-        if ( push.stored ) {
-            tap = await storedTapItem(push.uid, getNotification);
-            if ( ! tap ) return;
-        }
-        toasts_for(push.uid).remove();
-        update_tab_notif_count_badge();
-        void markNotificationAcknowledged(push.uid).catch((err) => {
-            console.warn('Could not acknowledge notification:', err);
-        });
-        return tap_notification(tap);
-    });
+    setPushTapHandler(storedTapHandler({
+        fetchRow: getNotification,
+        surface: tap_surface,
+        found: (uid) => {
+            toasts_for(uid).remove();
+            update_tab_notif_count_badge();
+            void markNotificationAcknowledged(uid).catch((err) => {
+                console.warn('Could not acknowledge notification:', err);
+            });
+        },
+    }));
     startPushWorker();
 
     /**
diff --git a/src/gui/src/helpers/notificationTap.js b/src/gui/src/helpers/notificationTap.js
index 31b3056f0..3c9420f3c 100644
--- a/src/gui/src/helpers/notificationTap.js
+++ b/src/gui/src/helpers/notificationTap.js
@@ -27,6 +27,8 @@ export const PUSH_TAP_PARAM = 'puter.notification';
 
 const UID_PATTERN = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
 const UID_MAX = 64;
+// A tap for a uid acted on this recently is the same tap again.
+const TAP_REPEAT_MS = 10_000;
 
 const nonEmpty = (value) => (typeof value === 'string' && value !== '' ? value : undefined);
 
@@ -38,11 +40,10 @@ const nonEmpty = (value) => (typeof value === 'string' && value !== '' ? value :
  */
 
 /**
+ * A tap from the worker or the URL names only a notification; what it leads
+ * to is read off the signed-in user's own row.
  * @typedef {Object} PushTap
  * @property {string} uid
- * @property {{ app?: string, path?: string }} [target]
- * @property {unknown} [data]
- * @property {true} [stored] - Only the uid is known; act on the stored row
  */
 
 /**
@@ -52,60 +53,37 @@ const nonEmpty = (value) => (typeof value === 'string' && value !== '' ? value :
  */
 
 /**
- * @param {{ uid?: string, notification?: Object|null, appUid?: string|null, push?: PushTap }} tap
+ * @param {{ uid?: string, notification?: Object|null, appUid?: string|null }} tap
  * @returns {TapRoute}
  */
-export const tapRoute = ({ uid, notification, appUid, push }) => {
-    if ( notification && typeof notification === 'object' ) {
-        if ( notification.type === APP_MESSAGE_TYPE ) {
-            const app = nonEmpty(appUid) ?? nonEmpty(notification.app?.uid);
-            if ( ! app ) return { kind: 'panel' };
-            const target = typeof notification.target === 'string' ? notification.target : undefined;
-            return { kind: 'app', appUid: app, click: { uid, target, data: notification.data } };
-        }
-        if ( isShareNotification(notification) ) return { kind: 'share', notification };
-        return { kind: 'panel' };
-    }
-    const app = nonEmpty(push?.target?.app);
-    if ( app ) {
-        return { kind: 'app', appUid: app, click: { uid, target: push.target.path, data: push.data } };
-    }
-    const path = push?.target?.path;
-    if ( typeof path === 'string' && path.startsWith('/') ) {
-        return {
-            kind: 'share',
-            notification: { type: 'share.received', fields: { target: { path } } },
-        };
+export const tapRoute = ({ uid, notification, appUid }) => {
+    if ( ! notification || typeof notification !== 'object' ) return { kind: 'panel' };
+    if ( notification.type === APP_MESSAGE_TYPE ) {
+        const app = nonEmpty(appUid) ?? nonEmpty(notification.app?.uid);
+        if ( ! app ) return { kind: 'panel' };
+        const target = typeof notification.target === 'string' ? notification.target : undefined;
+        return { kind: 'app', appUid: app, click: { uid, target, data: notification.data } };
     }
+    if ( isShareNotification(notification) ) return { kind: 'share', notification };
     return { kind: 'panel' };
 };
 
+/** @returns {PushTap|null} */
+const tapFor = (uid) => (
+    typeof uid === 'string' && uid.length <= UID_MAX && UID_PATTERN.test(uid) ? { uid } : null
+);
+
 /**
  * @param {unknown} raw - The worker's `notification` object
- * @returns {PushTap|null}
+ * @returns {PushTap|null} The notification it names; nothing else it carries
  */
-export const normalizePushTap = (raw) => {
-    if ( ! raw || typeof raw !== 'object' ) return null;
-    if ( ! nonEmpty(raw.uid) || raw.uid.length > UID_MAX ) return null;
-    const target = {};
-    if ( nonEmpty(raw.target?.app) ) target.app = raw.target.app;
-    if ( nonEmpty(raw.target?.path) ) target.path = raw.target.path;
-    return {
-        uid: raw.uid,
-        ...(Object.keys(target).length ? { target } : {}),
-        ...(raw.data !== undefined ? { data: raw.data } : {}),
-    };
-};
+export const normalizePushTap = (raw) => (raw && typeof raw === 'object' ? tapFor(raw.uid) : null);
 
 /**
  * @param {URLSearchParams} [params]
- * @returns {PushTap|null} A tap naming only a notification uid
+ * @returns {PushTap|null}
  */
-export const pushTapFromParams = (params) => {
-    const uid = params?.get?.(PUSH_TAP_PARAM);
-    if ( typeof uid !== 'string' || uid.length > UID_MAX || ! UID_PATTERN.test(uid) ) return null;
-    return { uid, stored: true };
-};
+export const pushTapFromParams = (params) => tapFor(params?.get?.(PUSH_TAP_PARAM));
 
 /**
  * @param {string} uid
@@ -205,10 +183,27 @@ export const handleNotificationTap = async (tap, { share, panel, openApp }) => {
     return panel?.();
 };
 
+/**
+ * @param {{ fetchRow: (uid: string) => Promise<Object|null>,
+ *     surface: { share: Function, panel?: Function, openApp: Function },
+ *     found?: (uid: string) => unknown, missing?: () => unknown }} deps
+ *     `found` runs before routing a row that was read; `missing` instead of
+ *     routing when there is none
+ * @returns {(tap: PushTap) => Promise<unknown>}
+ */
+export const storedTapHandler = ({ fetchRow, surface, found, missing }) => async ({ uid }) => {
+    const tap = await storedTapItem(uid, fetchRow);
+    if ( ! tap ) return missing?.();
+    found?.(uid);
+    return handleNotificationTap(tap, surface);
+};
+
 /** @type {((tap: PushTap) => unknown) | null} */
 let pushTapHandler = null;
 /** @type {PushTap[]} */
 const pendingPushTaps = [];
+/** @type {Map<string, number>} uid → when it was last handed over */
+const recentTaps = new Map();
 
 /** @param {(tap: PushTap) => unknown} handler */
 export const setPushTapHandler = (handler) => {
@@ -216,15 +211,21 @@ export const setPushTapHandler = (handler) => {
     for ( const tap of pendingPushTaps.splice(0) ) void handler(tap);
 };
 
+const seenLately = (uid, now) => {
+    for ( const [seen, at] of recentTaps ) {
+        if ( now - at >= TAP_REPEAT_MS ) recentTaps.delete(seen);
+    }
+    if ( recentTaps.has(uid) ) return true;
+    recentTaps.set(uid, now);
+    return false;
+};
+
 /** @param {PushTap|null} tap */
 const deliverPushTap = (tap) => {
-    if ( ! tap ) return;
+    if ( ! tap || seenLately(tap.uid, Date.now()) ) return;
     if ( pushTapHandler ) void pushTapHandler(tap);
     else pendingPushTaps.push(tap);
 };
 
-/** @param {unknown} raw - The worker's `notification` object */
+/** @param {unknown} raw - The worker's `notification` object, or a tap from the URL */
 export const dispatchPushTap = (raw) => deliverPushTap(normalizePushTap(raw));
-
-/** @param {PushTap} tap - From {@link pushTapFromParams} */
-export const dispatchStoredTap = (tap) => deliverPushTap(tap?.stored ? tap : null);
diff --git a/src/gui/src/helpers/notificationTap.test.js b/src/gui/src/helpers/notificationTap.test.js
index e8d9bffd2..74a9488d6 100644
--- a/src/gui/src/helpers/notificationTap.test.js
+++ b/src/gui/src/helpers/notificationTap.test.js
@@ -24,12 +24,15 @@ import {
     normalizePushTap,
     openAppForTap,
     pushTapFromParams,
+    storedTapHandler,
     storedTapItem,
     tapRoute,
     withoutNotificationClick,
 } from './notificationTap.js';
 
 const UID = '0b6a2c1e-6f1d-4a57-9c1e-3d2f8a9b7c10';
+const OTHER_UID = '7d3e9f10-2b4c-4d5e-8f6a-1b2c3d4e5f60';
+const THIRD_UID = 'c1d2e3f4-5a6b-4c7d-8e9f-0a1b2c3d4e5f';
 
 const appMessage = (over = {}) => ({
     type: 'app.message',
@@ -75,24 +78,22 @@ describe('tapRoute', () => {
             .toEqual({ kind: 'panel' });
     });
 
-    it('reads a push tap: an app target is the app, a path is a shared item', () => {
+    it('is the list without a notification, whatever else the tap carries', () => {
         expect(tapRoute({ uid: 'n1', push: { uid: 'n1', target: { app: 'app-1', path: '/rooms/7' }, data: 5 } }))
-            .toEqual({ kind: 'app', appUid: 'app-1', click: { uid: 'n1', target: '/rooms/7', data: 5 } });
-        expect(tapRoute({ uid: 'n1', push: { uid: 'n1', target: { path: '/alice/Shared/a.txt' } } })).toEqual({
-            kind: 'share',
-            notification: { type: 'share.received', fields: { target: { path: '/alice/Shared/a.txt' } } },
-        });
-        expect(tapRoute({ uid: 'n1', push: { uid: 'n1' } })).toEqual({ kind: 'panel' });
+            .toEqual({ kind: 'panel' });
+        expect(tapRoute({ uid: 'n1', target: { app: 'app-1' }, notification: null })).toEqual({ kind: 'panel' });
+        expect(tapRoute({ uid: 'n1' })).toEqual({ kind: 'panel' });
     });
 });
 
 describe('normalizePushTap', () => {
-    it('keeps the expected fields and drops the rest', () => {
-        expect(normalizePushTap({ uid: 'n1', target: { app: 'a', path: 7, x: 1 }, data: null, extra: 1 }))
-            .toEqual({ uid: 'n1', target: { app: 'a' }, data: null });
+    it('keeps the notification uid and nothing else', () => {
+        expect(normalizePushTap({ uid: UID, target: { app: 'a', path: '/x' }, data: null, extra: 1 }))
+            .toEqual({ uid: UID });
         expect(normalizePushTap({ uid: '' })).toBeNull();
-        expect(normalizePushTap({ uid: 'x'.repeat(65) })).toBeNull();
-        expect(normalizePushTap('n1')).toBeNull();
+        expect(normalizePushTap({ uid: 'n1' })).toBeNull();
+        expect(normalizePushTap({ uid: `${UID}${'0'.repeat(40)}` })).toBeNull();
+        expect(normalizePushTap(UID)).toBeNull();
     });
 });
 
@@ -100,7 +101,7 @@ describe('pushTapFromParams', () => {
     const params = (value) => new URLSearchParams({ 'puter.notification': value });
 
     it('reads a notification uid, and nothing else, from the URL', () => {
-        expect(pushTapFromParams(params(UID))).toEqual({ uid: UID, stored: true });
+        expect(pushTapFromParams(params(UID))).toEqual({ uid: UID });
     });
 
     it('takes nothing that is not a notification uid', () => {
@@ -251,17 +252,78 @@ describe('handleNotificationTap', () => {
     });
 });
 
+describe('storedTapHandler', () => {
+    const surface = () => ({ share: vi.fn(), panel: vi.fn(), openApp: vi.fn() });
+    const row = { uid: UID, value: appMessage({ target: '/rooms/9', data: { room: 9 } }), app_uid: 'app-row' };
+    const rows = async (uid) => (uid === UID ? row : null);
+
+    it('routes from the row the tap names, after `found`', async () => {
+        const deps = { fetchRow: vi.fn(rows), surface: surface(), found: vi.fn(), missing: vi.fn() };
+        await storedTapHandler(deps)({ uid: UID });
+        expect(deps.fetchRow).toHaveBeenCalledWith(UID);
+        expect(deps.found).toHaveBeenCalledWith(UID);
+        expect(deps.surface.openApp).toHaveBeenCalledWith({
+            kind: 'app',
+            appUid: 'app-row',
+            click: { uid: UID, target: '/rooms/9', data: { room: 9 } },
+        });
+        expect(deps.missing).not.toHaveBeenCalled();
+    });
+
+    it('opens nothing for a row the user cannot read, running `missing` instead', async () => {
+        const deps = { fetchRow: vi.fn(rows), surface: surface(), found: vi.fn(), missing: vi.fn() };
+        await storedTapHandler(deps)({ uid: OTHER_UID });
+        expect(deps.missing).toHaveBeenCalledOnce();
+        expect(deps.found).not.toHaveBeenCalled();
+        expect(deps.surface.openApp).not.toHaveBeenCalled();
+        expect(deps.surface.panel).not.toHaveBeenCalled();
+        expect(deps.surface.share).not.toHaveBeenCalled();
+    });
+});
+
 describe('push tap dispatch', () => {
+    afterEach(() => {
+        vi.useRealTimers();
+    });
+
     it('holds taps until a handler is set, then hands them over in order', async () => {
-        const { dispatchPushTap, dispatchStoredTap, setPushTapHandler } = await import('./notificationTap.js');
-        dispatchPushTap({ uid: 'n1' });
+        const { dispatchPushTap, setPushTapHandler } = await import('./notificationTap.js');
+        dispatchPushTap({ uid: UID });
         dispatchPushTap({ uid: '' });
-        dispatchStoredTap({ uid: UID, stored: true });
-        dispatchStoredTap({ uid: UID });
+        dispatchPushTap({ uid: 'n2' });
+        dispatchPushTap({ uid: OTHER_UID, stored: true });
         const handler = vi.fn();
         setPushTapHandler(handler);
-        expect(handler.mock.calls).toEqual([[{ uid: 'n1' }], [{ uid: UID, stored: true }]]);
-        dispatchPushTap({ uid: 'n3' });
-        expect(handler).toHaveBeenLastCalledWith({ uid: 'n3' });
+        expect(handler.mock.calls).toEqual([[{ uid: UID }], [{ uid: OTHER_UID }]]);
+        dispatchPushTap({ uid: THIRD_UID });
+        expect(handler).toHaveBeenLastCalledWith({ uid: THIRD_UID });
+    });
+
+    it('hands a worker tap over as the notification it names, nothing more', async () => {
+        const { dispatchPushTap, setPushTapHandler, storedTapHandler: make } = await import('./notificationTap.js');
+        const openApp = vi.fn();
+        const fetchRow = vi.fn(async () => null);
+        setPushTapHandler(make({ fetchRow, surface: { share: vi.fn(), openApp } }));
+        dispatchPushTap({ uid: OTHER_UID, target: { app: 'app-1', path: '/rooms/7' }, data: { room: 7 } });
+        await new Promise((resolve) => setTimeout(resolve, 0));
+        expect(fetchRow).toHaveBeenCalledWith(OTHER_UID);
+        expect(openApp).not.toHaveBeenCalled();
+    });
+
+    it('hands the same notification over once within ten seconds', async () => {
+        vi.useFakeTimers();
+        const { dispatchPushTap, setPushTapHandler } = await import('./notificationTap.js');
+        const handler = vi.fn();
+        setPushTapHandler(handler);
+        dispatchPushTap({ uid: UID });
+        dispatchPushTap({ uid: UID });
+        dispatchPushTap({ uid: OTHER_UID });
+        expect(handler.mock.calls).toEqual([[{ uid: UID }], [{ uid: OTHER_UID }]]);
+        vi.advanceTimersByTime(9_999);
+        dispatchPushTap({ uid: UID });
+        expect(handler).toHaveBeenCalledTimes(2);
+        vi.advanceTimersByTime(1);
+        dispatchPushTap({ uid: UID });
+        expect(handler).toHaveBeenCalledTimes(3);
     });
 });
diff --git a/src/gui/src/helpers/pushWorker.js b/src/gui/src/helpers/pushWorker.js
index e0783189c..73cb78d62 100644
--- a/src/gui/src/helpers/pushWorker.js
+++ b/src/gui/src/helpers/pushWorker.js
@@ -23,7 +23,6 @@ import { httpsIconFor, isShareNotification } from '../UI/Dashboard/notificationC
 import {
     APP_MESSAGE_TYPE,
     dispatchPushTap,
-    dispatchStoredTap,
     normalizePushTap,
     pushTapFromParams,
     PUSH_TAP_PARAM,
@@ -69,9 +68,12 @@ const nonEmpty = (value) => (typeof value === 'string' && value.trim() !== '' ?
  * @returns {Object} The push payload shape `sw.js` shows
  */
 export const pushMessageFor = (uid, notification, appUid = null) => {
-    const message = { uid, group: nonEmpty(notification.group) ?? uid };
+    const group = nonEmpty(notification.group);
+    const message = { uid, group: group ?? uid };
     if ( notification.type === APP_MESSAGE_TYPE ) {
         const app = nonEmpty(appUid) ?? nonEmpty(notification.app?.uid);
+        // An app's group is its own, as the server names it on a push.
+        if ( app && group ) message.group = `${app}:${group}`;
         if ( notification.sensitive === true ) {
             return { ...message, title: nonEmpty(notification.app?.name), ...(app ? { target: { app } } : {}) };
         }
@@ -144,7 +146,7 @@ export const startPushWorker = async ({
     if ( query?.has?.(PUSH_TAP_PARAM) ) {
         const opened = pushTapFromParams(query);
         clearParam(PUSH_TAP_PARAM);
-        if ( opened ) dispatchStoredTap(opened);
+        if ( opened ) dispatchPushTap(opened);
     }
 
     // Leave an existing worker: removing it ends this browser's subscription.
@@ -155,7 +157,8 @@ export const startPushWorker = async ({
         dispatchPushTap(event.data.notification);
     });
     try {
-        await nav.serviceWorker.register(WORKER_URL, { scope: '/' });
+        // Scripts the worker imports are fetched fresh on each update check.
+        await nav.serviceWorker.register(WORKER_URL, { scope: '/', updateViaCache: 'none' });
     } catch ( err ) {
         console.warn('Could not register the service worker:', err);
     }
diff --git a/src/gui/src/helpers/pushWorker.test.js b/src/gui/src/helpers/pushWorker.test.js
index 7e2359f27..d233a46f6 100644
--- a/src/gui/src/helpers/pushWorker.test.js
+++ b/src/gui/src/helpers/pushWorker.test.js
@@ -74,7 +74,7 @@ describe('pushMessageFor', () => {
             app: { uid: 'app-1', name: 'Chat' },
         })).toEqual({
             uid: 'n1',
-            group: 'room-7',
+            group: 'app-1:room-7',
             title: 'New reply',
             body: 'see you',
             icon: 'https://example.com/i.png',
@@ -102,6 +102,16 @@ describe('pushMessageFor', () => {
         });
     });
 
+    it("tags an app message's group with its app, so two apps never share one", () => {
+        const message = (app, over = {}) => ({ type: 'app.message', title: 't', group: 'room-7', app: { uid: app }, ...over });
+        expect(pushMessageFor('n1', message('app-1')).group).toBe('app-1:room-7');
+        expect(pushMessageFor('n1', message('app-2')).group).toBe('app-2:room-7');
+        expect(pushMessageFor('n1', message('app-1', { sensitive: true })).group).toBe('app-1:room-7');
+        expect(pushMessageFor('n1', message('app-b'), 'app-a').group).toBe('app-a:room-7');
+        expect(pushMessageFor('n1', message('app-1', { group: undefined })).group).toBe('n1');
+        expect(pushMessageFor('n2', { ...share, group: 'room-7' }).group).toBe('room-7');
+    });
+
     it("uses the row's app uid over the one the message names", () => {
         expect(pushMessageFor('n1', { type: 'app.message', title: 't' }, 'app-9').target).toEqual({ app: 'app-9' });
         expect(pushMessageFor('n1', { type: 'app.message', title: 't', app: { uid: 'app-b' } }, 'app-a').target)
@@ -207,17 +217,17 @@ describe('startPushWorker', () => {
         mod.setPushTapHandler(handler);
         const nav = makeNav();
         await start(mod, { nav });
-        expect(nav.serviceWorker.register).toHaveBeenCalledWith('/sw.js', { scope: '/' });
+        expect(nav.serviceWorker.register).toHaveBeenCalledWith('/sw.js', { scope: '/', updateViaCache: 'none' });
 
         const source = { postMessage: vi.fn() };
-        nav.listeners.message({ data: { type: 'other', notification: { uid: 'x' } }, source });
-        nav.listeners.message({ data: { type: 'puter-notification-click', id: 'click-0', notification: { uid: '' } }, source });
+        nav.listeners.message({ data: { type: 'other', notification: { uid: UID } }, source });
+        nav.listeners.message({ data: { type: 'puter-notification-click', id: 'click-0', notification: { uid: 'n1' } }, source });
         nav.listeners.message({
-            data: { type: 'puter-notification-click', id: 'click-1', notification: { uid: 'n1', target: { app: 'a' } } },
+            data: { type: 'puter-notification-click', id: 'click-1', notification: { uid: UID, target: { app: 'a' } } },
             source,
         });
         expect(source.postMessage.mock.calls).toEqual([[{ type: 'puter-notification-click-ack', id: 'click-1' }]]);
-        expect(handler.mock.calls).toEqual([[{ uid: 'n1', target: { app: 'a' } }]]);
+        expect(handler.mock.calls).toEqual([[{ uid: UID }]]);
     });
 
     it('registers nothing inside a frame', async () => {
@@ -245,7 +255,7 @@ describe('startPushWorker', () => {
             clearParam,
         });
         expect(clearParam).toHaveBeenCalledWith('puter.notification');
-        expect(handler).toHaveBeenCalledWith({ uid: UID, stored: true });
+        expect(handler).toHaveBeenCalledWith({ uid: UID });
     });
 
     it('clears a malformed parameter and hands nothing over', async () => {