diff --git a/FEATURES.md b/FEATURES.md
index cd1acc3..27a5876 100644
--- a/FEATURES.md
+++ b/FEATURES.md
@@ -1119,9 +1119,14 @@ needed nothing in either half.
   when the open page happened to be the root.
 - **The subscription is renewed on every app start**, because a JMAP push
   subscription expires — seven days is the ceiling — and re-registering before
-  it lapses is the client's job. Renewal can only happen with a page open:
-  registering is a JMAP call and the service worker has no session to make one
-  with. So the guarantee is that background notifications keep working as long
+  it lapses is the client's job. Renewal happens with a page open, and the
+  reason is *when* the service worker runs rather than what it is allowed to
+  do: it only wakes for an event, and the event that would wake it is a push
+  that stops arriving the moment the subscription lapses. A renewal that can
+  only run while renewal is still unnecessary is no schedule at all. (This
+  page previously said the worker had no session to register with. That was
+  wrong — see **Acting on a notification** below.) So the guarantee is that
+  background notifications keep working as long
   as ihasmail is opened now and again, and the two-day renewal window means
   once a week is enough. A browser that dropped or rotated its subscription on
   its own is re-subscribed at the same moment, rather than left with a switch
@@ -1150,9 +1155,11 @@ needed nothing in either half.
   neither -- in `display: standalone` there is no tab strip and no favicon on
   screen, so a home-screen ihasmail showed nothing at all. Web Push marks the
   icon while the app is closed, with a dot rather than a figure: the service
-  worker has no session to ask how many messages are unread, and a push carries
-  the new mail rather than a total, so counting the payload would badge "2" over
-  an inbox holding forty. The next tab to open writes the real count over it.
+  worker is not told how many messages are unread — a push carries the new mail
+  rather than a total, so counting the payload would badge "2" over an inbox
+  holding forty. The next tab to open writes the real count over it. It could
+  now ask, which is a change since this was written; whether a badge is worth a
+  request on every push is a separate question and has not been answered yet.
   Unsupported browsers show nothing, as does iOS until notification permission
   has been granted, which is that platform's condition for a badge.
 - **In the share sheet** — share a photo, a link or a file from any other app
@@ -1169,6 +1176,34 @@ needed nothing in either half.
   expires after ten minutes rather than opening a composer full of a forgotten
   photo the next time you look. Android and Chromium only; iOS does not
   implement share targets.
+- **Acting on a notification.** Archive and Mark as read sit on the
+  notification itself, and both happen where you are — the phone stays in your
+  hand, or in your pocket. They are the two a phone shows: `maxActions` is two
+  on Android, and anything past it is dropped silently, so these are the two
+  worth having rather than the two that came first. Reply is deliberately not
+  among them, because it would have to open the app, and tapping the
+  notification already does that.
+
+  This was described here as impossible, and it is worth saying why it was not.
+  ihasmail's session is an httpOnly cookie against its own origin, and the only
+  other thing the API asks for is a fixed header that is not a secret. A
+  same-origin request from the service worker carries the cookie like any
+  other, so `Email/set` from a notification is an ordinary call. What the
+  worker genuinely cannot reach is anything a *tab* holds in memory — and the
+  API asks for none of it.
+
+  What it cannot reach is a catalogue. The worker is plain JavaScript outside
+  the bundle, with no i18n and no idea which mailbox is the archive, so the app
+  writes both down for it whenever the language, the account or the folder list
+  changes. Where there is no such note — between installing a new worker and
+  next opening ihasmail — the notification appears with no action buttons at
+  all rather than English ones over a guessed mailbox.
+
+  A session can still be gone by the time a button is pressed: expired, signed
+  out, or a cookie that did not outlive the browser. That comes back as a
+  refusal, and the notification says so rather than disappearing as though it
+  had worked. It does not open the app to recover — being interrupted is the
+  thing the button existed to avoid.
 - **Share** — a message, or one attachment, handed to the operating system's
   share sheet instead of to the filesystem. On a phone a download is close to a
   dead end: the file lands in Downloads and whoever wanted to send it somewhere
diff --git a/web/public/sw.js b/web/public/sw.js
index 605cafe..6ca0962 100644
--- a/web/public/sw.js
+++ b/web/public/sw.js
@@ -130,14 +130,23 @@ self.addEventListener("fetch", (event) => {
 
 /*
  * Stalwart signs with VAPID and pushes straight to the browser's push service;
- * nothing here talks to ihasmail's server. The payload is an EmailPush object
- * (draft-ietf-jmap-emailpush) carrying enough of the message to show a useful
- * notification without a round-trip — which matters, because when this fires
- * there may be no session to make one with.
+ * nothing here talks to ihasmail's server on the way in. The payload is an
+ * EmailPush object (draft-ietf-jmap-emailpush) carrying enough of the message
+ * to show a useful notification without a round-trip, which is what lets a
+ * notification appear immediately rather than after a request.
+ *
+ * This file used to say that a round-trip was impossible here, and it was
+ * wrong: see the note on `jmap()`. What it can do is ask; what it cannot do is
+ * be sure of an answer, since the session may be gone by the time it does. So
+ * the payload still carries the message and the request is only made when
+ * somebody presses something.
  *
  * A JMAP subscription also delivers a PushVerification first, and stays silent
- * until the client echoes its code back. That cannot be done from here (no
- * credentials), so it is stashed for a tab to collect and confirm.
+ * until the client echoes its code back. It is stashed for a tab to confirm
+ * rather than answered here — on the same reasoning, and because a
+ * verification that failed silently would leave push looking broken with
+ * nothing to show for it. Answering it directly is now possible and is worth
+ * revisiting.
  */
 
 /*
@@ -153,13 +162,90 @@ self.addEventListener("fetch", (event) => {
  */
 const VERIFY_KEY = `${BASE}/ihasmail-push-verification`;
 
-function textOf(email) {
+/*
+ * What a tab wrote down for this worker: the account, which mailbox is the
+ * archive, and the worker's own text in the reader's language. See
+ * `lib/swFacts.ts` for why any of that has to be handed over rather than
+ * worked out here.
+ *
+ * Everything that depends on it is skipped when it is missing, which is the
+ * state between installing this worker and next opening the app. An action
+ * button with no label, or one that files mail into a mailbox guessed by name,
+ * is worse than the notification that was here before.
+ */
+const FACTS_KEY = `${BASE}/ihasmail-worker-facts`;
+
+async function readFacts() {
+  try {
+    const hit = await (await caches.open(VERSION)).match(FACTS_KEY);
+    return hit ? await hit.json() : null;
+  } catch {
+    return null;
+  }
+}
+
+/*
+ * A JMAP call, made as the reader.
+ *
+ * This worker was written believing it could not do this -- that acting on
+ * mail needed a session it had no way to hold. It does not: ihasmail's session
+ * is an httpOnly cookie against its own origin, and the only other thing the
+ * API asks for is a fixed `x-requested-with` header that is not a secret and
+ * is not held anywhere. A same-origin fetch from here carries the cookie like
+ * any other, so `Email/set` from a notification is an ordinary request.
+ *
+ * What is genuinely not available is anything the *tab* holds in memory, and
+ * the answer is that the API asks for none of it.
+ *
+ * The session can still be gone -- expired, signed out, or a cookie that did
+ * not survive the browser closing -- which arrives as a 401 and is reported
+ * rather than swallowed. A tap that silently does nothing is the failure worth
+ * avoiding here: the reader has already put the phone down.
+ */
+async function jmap(methodCalls) {
+  const res = await fetch(`${BASE}/api/jmap`, {
+    method: "POST",
+    credentials: "same-origin",
+    headers: { "content-type": "application/json", accept: "application/json", "x-requested-with": "ihasmail" },
+    body: JSON.stringify({ using: ["urn:ietf:params:jmap:core", "urn:ietf:params:jmap:mail"], methodCalls }),
+  });
+  if (!res.ok) throw new Error(`HTTP ${res.status}`);
+  const body = await res.json();
+  // A JMAP method can fail inside a 200. Treat that as a failure too, rather
+  // than reporting success because the transport was fine.
+  const first = body?.methodResponses?.[0];
+  if (!first || first[0] === "error") throw new Error(first?.[1]?.type || "error");
+  const notUpdated = first[1]?.notUpdated;
+  if (notUpdated && Object.keys(notUpdated).length) throw new Error("notUpdated");
+  return body;
+}
+
+function textOf(email, strings) {
   const from = email?.from?.[0];
-  const who = from?.name || from?.email || "New message";
-  const what = email?.subject || "(no subject)";
+  const who = from?.name || from?.email || strings.newMessage;
+  const what = email?.subject || strings.noSubject;
   return { title: who, body: what, preview: email?.preview || "" };
 }
 
+/*
+ * Two, because that is what a phone shows. `Notification.maxActions` is 2 on
+ * Android Chrome, and anything past it is dropped silently -- so these are the
+ * two worth having rather than the two that happened to come first. Both are
+ * triage: they are what somebody does to a notification they have read the
+ * whole of on the lock screen and does not need to open.
+ *
+ * Reply is deliberately not among them. It cannot be done from here, so it
+ * would have to open the app -- and an action that opens the app is what
+ * tapping the notification already does.
+ */
+function actionsFor(facts) {
+  if (!facts) return [];
+  const actions = [];
+  if (facts.archiveId) actions.push({ action: "archive", title: facts.strings.archive });
+  actions.push({ action: "read", title: facts.strings.markRead });
+  return actions;
+}
+
 self.addEventListener("push", (event) => {
   let data = null;
   try {
@@ -186,6 +272,8 @@ self.addEventListener("push", (event) => {
 
   const emails = (data && data["@type"] === "EmailPush" && Array.isArray(data.emails)) ? data.emails : [];
   event.waitUntil((async () => {
+    const facts = await readFacts();
+    const strings = facts?.strings ?? { newMail: "New mail", newMessage: "New message", noSubject: "(no subject)" };
     /*
      * Mark the app icon, without claiming a number.
      *
@@ -201,7 +289,7 @@ self.addEventListener("push", (event) => {
     if (!emails.length) {
       // A StateChange, or a payload too large to carry the message. Say
       // something true rather than inventing a sender.
-      await self.registration.showNotification("New mail", {
+      await self.registration.showNotification(strings.newMail, {
         icon: `${BASE}/img/icon-192.png`, badge: `${BASE}/img/favicon-64.png`, tag: "ihasmail-mail", data: { url: `${BASE}/mail` },
       });
       return;
@@ -209,21 +297,69 @@ self.addEventListener("push", (event) => {
     // One notification per message, collapsing repeats of the same message by
     // tag so a re-push does not stack.
     for (const email of emails.slice(0, 5)) {
-      const { title, body, preview } = textOf(email);
+      const { title, body, preview } = textOf(email, strings);
       await self.registration.showNotification(title, {
         body: preview ? `${body}\n${preview}` : body,
         icon: `${BASE}/img/icon-192.png`,
         badge: `${BASE}/img/favicon-64.png`,
         tag: `ihasmail-${email.id || body}`,
-        data: { url: email.id ? `${BASE}/mail/inbox/${email.id}` : `${BASE}/mail` },
+        // Only where there is a message to act on: a payload without an id can
+        // be shown but not archived, and a button that cannot work should not
+        // be drawn.
+        actions: email.id ? actionsFor(facts) : [],
+        data: {
+          url: email.id ? `${BASE}/mail/inbox/${email.id}` : `${BASE}/mail`,
+          id: email.id || null,
+          title,
+          accountId: facts?.accountId ?? null,
+          archiveId: facts?.archiveId ?? null,
+          failed: strings.failed ?? null,
+        },
       });
     }
   })());
 });
 
+/*
+ * Do what the button said, without opening anything.
+ *
+ * The whole point of an action is that the phone goes back in the pocket, so
+ * this must not fall back to opening the app when the call fails -- that is
+ * the same interruption the action existed to avoid. It re-notifies instead,
+ * saying it did not happen, and leaves opening ihasmail to the reader.
+ *
+ * Archiving replaces the mailbox set rather than adding to it, which is what
+ * archiving is: the message leaves the inbox. Marking read is a keyword and
+ * touches nothing else.
+ */
+async function runAction(action, data) {
+  const { id, accountId, archiveId } = data;
+  if (!id || !accountId) return;
+  const patch = action === "archive"
+    ? { mailboxIds: { [archiveId]: true } }
+    : { "keywords/$seen": true };
+  try {
+    if (action === "archive" && !archiveId) throw new Error("no archive mailbox");
+    await jmap([["Email/set", { accountId, update: { [id]: patch } }, "0"]]);
+  } catch {
+    await self.registration.showNotification(data.title || "ihasmail", {
+      body: data.failed || "Could not do that — open ihasmail and try again",
+      icon: `${BASE}/img/icon-192.png`,
+      badge: `${BASE}/img/favicon-64.png`,
+      tag: `ihasmail-failed-${id}`,
+      data: { url: data.url },
+    });
+  }
+}
+
 self.addEventListener("notificationclick", (event) => {
   event.notification.close();
-  const url = event.notification.data?.url || `${BASE}/mail`;
+  const data = event.notification.data || {};
+  if (event.action === "archive" || event.action === "read") {
+    event.waitUntil(runAction(event.action, data));
+    return;
+  }
+  const url = data.url || `${BASE}/mail`;
   event.waitUntil((async () => {
     const clients = await self.clients.matchAll({ includeUncontrolled: true, type: "window" });
     // Reuse a tab if one is open rather than piling up windows. Same origin is
diff --git a/web/src/App.tsx b/web/src/App.tsx
index dd5f944..f484933 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -17,6 +17,7 @@ import { AppShell } from "@/views/AppShell";
 import { MailView } from "@/views/mail/MailView";
 import { ComposerDock } from "@/views/compose/ComposerDock";
 import { setUnreadBadge } from "@/lib/notify";
+import { publishWorkerFacts } from "@/lib/swFacts";
 import { PAINTED_FROM_CACHE, useSettings, syncedPart } from "@/store/settings";
 import { armSettingsSync, loadRemoteSettings, queueSettingsPush, settingsAlreadyLoadedFor, settingsSyncAvailable } from "@/lib/settingsSync";
 import { loadSettingsPolicy } from "@/lib/settingsPolicy";
@@ -263,6 +264,21 @@ function AuthedApp() {
     });
   }, [inboxUnread, appName]);
 
+  /*
+   * Leave the service worker its briefing.
+   *
+   * Written from here rather than once at startup because everything in it can
+   * change while the app is open -- the language from Settings, the archive
+   * folder from the mailbox list arriving -- and what is written is what the
+   * worker will still be reading a week from now, with no tab to correct it.
+   * See lib/swFacts.ts.
+   */
+  const archiveId = useMail((s) => s.roleId("archive"));
+  const languageVersion = useLanguageVersion();
+  useEffect(() => {
+    void publishWorkerFacts(accountId, archiveId);
+  }, [accountId, archiveId, languageVersion]);
+
   // Request notification permission lazily when enabled
   const notif = useSettings((s) => s.settings.desktopNotifications);
   useEffect(() => {
diff --git a/web/src/lib/__tests__/swFacts.test.ts b/web/src/lib/__tests__/swFacts.test.ts
new file mode 100644
index 0000000..8010273
--- /dev/null
+++ b/web/src/lib/__tests__/swFacts.test.ts
@@ -0,0 +1,90 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { publishWorkerFacts, FACTS_KEY, type WorkerFacts } from "@/lib/swFacts";
+import { SW_CACHE_NAME } from "@/lib/swCache";
+import { setCatalog } from "@/lib/i18n";
+import { catalog as de } from "@/locales/de";
+
+/**
+ * The briefing is the only thing standing between a notification action and a
+ * button labelled in a language the reader does not use — the worker is plain
+ * JavaScript outside the bundle and cannot reach a catalogue.
+ *
+ * It is also the only place the archive mailbox is named, and getting that
+ * wrong does not fail visibly: a message would be filed somewhere, just not
+ * where Archive means.
+ */
+
+function fakeCaches() {
+  const store = new Map<string, string>();
+  const cache = {
+    put: vi.fn(async (key: string, res: Response) => void store.set(key, await res.text())),
+    match: vi.fn(async (key: string) => (store.has(key) ? new Response(store.get(key)) : undefined)),
+    delete: vi.fn(async () => true),
+  };
+  // Only the worker's own cache: a briefing put anywhere else is one the
+  // worker will never read.
+  const other = { put: vi.fn(), match: vi.fn(), delete: vi.fn() };
+  vi.stubGlobal("caches", { open: vi.fn(async (name: string) => (name === SW_CACHE_NAME ? cache : other)) });
+  return { store, cache };
+}
+
+const written = (store: Map<string, string>) => JSON.parse(store.get(FACTS_KEY)!) as WorkerFacts;
+
+afterEach(() => {
+  vi.unstubAllGlobals();
+  setCatalog("en", { strings: {}, plurals: {} });
+});
+
+describe("the worker's briefing", () => {
+  it("names the account and the archive mailbox", async () => {
+    const { store } = fakeCaches();
+    await publishWorkerFacts("a1", "mb-archive");
+    const facts = written(store);
+    expect(facts.accountId).toBe("a1");
+    expect(facts.archiveId).toBe("mb-archive");
+  });
+
+  it("carries the worker's text in the language the tab is in", async () => {
+    // The worker has no catalogue. Everything it will say has to be said here
+    // first, or a German reader gets English buttons on their lock screen.
+    setCatalog("de", de);
+    const { store } = fakeCaches();
+    await publishWorkerFacts("a1", "mb-archive");
+    const facts = written(store);
+    expect(facts.strings.archive).toBe("Archivieren");
+    expect(facts.strings.markRead).toBe("Als gelesen markieren");
+    expect(facts.strings.newMail).toBe("Neue E-Mail");
+    expect(facts.strings.noSubject).toBe("(kein Betreff)");
+    expect(facts.strings.failed).not.toBe("");
+  });
+
+  it("says so when there is no archive folder, rather than inventing one", async () => {
+    // The worker draws no Archive button on a null. An account without an
+    // archive is not a reason to file mail somewhere else.
+    const { store } = fakeCaches();
+    await publishWorkerFacts("a1", null);
+    expect(written(store).archiveId).toBeNull();
+  });
+
+  it("writes nothing before there is an account", async () => {
+    const { cache } = fakeCaches();
+    await publishWorkerFacts(null, null);
+    expect(cache.put).not.toHaveBeenCalled();
+  });
+
+  it("does not throw where the browser has no cache storage", async () => {
+    vi.stubGlobal("caches", undefined);
+    await expect(publishWorkerFacts("a1", "mb-archive")).resolves.toBeUndefined();
+  });
+
+  it("carries every string the worker looks up", async () => {
+    // The worker reads these by name and shows `undefined` for a missing one,
+    // which is the kind of thing that only appears on somebody's lock screen.
+    const { store } = fakeCaches();
+    await publishWorkerFacts("a1", "mb-archive");
+    const facts = written(store);
+    for (const k of ["newMail", "newMessage", "noSubject", "archive", "markRead", "failed"] as const) {
+      expect(facts.strings[k], `missing ${k}`).toBeTruthy();
+    }
+  });
+});
diff --git a/web/src/lib/swFacts.ts b/web/src/lib/swFacts.ts
new file mode 100644
index 0000000..90eda94
--- /dev/null
+++ b/web/src/lib/swFacts.ts
@@ -0,0 +1,69 @@
+/*
+ * What the service worker cannot work out for itself.
+ *
+ * The worker can act on mail — see the note on `jmap()` in sw.js — but it
+ * cannot read a catalogue or a store. It is plain JavaScript copied into the
+ * build, outside the bundle, with no i18n and no idea which mailbox is the
+ * archive. Both of those are things a tab knows and can simply write down.
+ *
+ * So the app leaves a short briefing in the same cache it uses for every other
+ * handoff, and the worker reads it when a notification arrives. Where there is
+ * none, the worker offers no actions at all rather than guessing: an untitled
+ * button that files mail somewhere is worse than a notification you have to
+ * open.
+ *
+ * That means the actions appear once ihasmail has been opened since the worker
+ * was installed, which is the same condition background notifications already
+ * carry — a push subscription has to be renewed from a tab too.
+ */
+import { withBase } from "./basePath";
+import { SW_CACHE_NAME } from "./swCache";
+import { t } from "./i18n";
+
+export const FACTS_KEY = "/ihasmail-worker-facts";
+
+export interface WorkerFacts {
+  /** The account the notifications are about. */
+  accountId: string;
+  /** Where Archive files to; null where the account has no archive folder. */
+  archiveId: string | null;
+  /** The worker's own user-visible text, in the language this tab is in. */
+  strings: {
+    newMail: string;
+    newMessage: string;
+    noSubject: string;
+    archive: string;
+    markRead: string;
+    failed: string;
+  };
+}
+
+/**
+ * Write the briefing.
+ *
+ * Called again whenever what is in it could have changed — the language, the
+ * account, the archive folder — because it is what the worker will still be
+ * reading in a week's time. Rewriting it is one cache put; there is nothing to
+ * gain by working out whether it differs.
+ */
+export async function publishWorkerFacts(accountId: string | null, archiveId: string | null): Promise<void> {
+  if (typeof caches === "undefined" || !accountId) return;
+  const facts: WorkerFacts = {
+    accountId,
+    archiveId,
+    strings: {
+      newMail: t("New mail"),
+      newMessage: t("New message"),
+      noSubject: t("(no subject)"),
+      archive: t("Archive"),
+      markRead: t("Mark as read"),
+      failed: t("Could not do that — open ihasmail and try again"),
+    },
+  };
+  try {
+    const cache = await caches.open(SW_CACHE_NAME);
+    await cache.put(withBase(FACTS_KEY), new Response(JSON.stringify(facts), { headers: { "content-type": "application/json" } }));
+  } catch {
+    /* no cache storage: the worker falls back to a notification with no actions */
+  }
+}
diff --git a/web/src/locales/de.ts b/web/src/locales/de.ts
index 05f93ab..2327417 100644
--- a/web/src/locales/de.ts
+++ b/web/src/locales/de.ts
@@ -892,6 +892,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Neue Nachricht",
+    "New mail": "Neue E-Mail",
+    "Could not do that — open ihasmail and try again": "Nicht möglich – öffnen Sie ihasmail und versuchen Sie es erneut",
     "Sending…": "Wird gesendet…",
     "Saving…": "Wird gespeichert…",
     "Error": "Fehler",
diff --git a/web/src/locales/es.ts b/web/src/locales/es.ts
index 9a5bedf..8989ca6 100644
--- a/web/src/locales/es.ts
+++ b/web/src/locales/es.ts
@@ -865,6 +865,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Mensaje nuevo",
+    "New mail": "Correo nuevo",
+    "Could not do that — open ihasmail and try again": "No se pudo hacer eso: abra ihasmail e inténtelo de nuevo",
     "Sending…": "Enviando…",
     "Saving…": "Guardando…",
     "Error": "Error",
diff --git a/web/src/locales/fr.ts b/web/src/locales/fr.ts
index 4017cb9..740a5c6 100644
--- a/web/src/locales/fr.ts
+++ b/web/src/locales/fr.ts
@@ -870,6 +870,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Nouveau message",
+    "New mail": "Nouveau courrier",
+    "Could not do that — open ihasmail and try again": "Impossible : ouvrez ihasmail et réessayez",
     "Sending…": "Envoi…",
     "Saving…": "Enregistrement…",
     "Error": "Erreur",
diff --git a/web/src/locales/ja.ts b/web/src/locales/ja.ts
index 6076028..fbb761f 100644
--- a/web/src/locales/ja.ts
+++ b/web/src/locales/ja.ts
@@ -873,6 +873,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "新規メール",
+    "New mail": "新着メール",
+    "Could not do that — open ihasmail and try again": "実行できませんでした - ihasmail を開いてやり直してください",
     "Sending…": "送信中…",
     "Saving…": "保存中…",
     "Error": "エラー",
diff --git a/web/src/locales/nl.ts b/web/src/locales/nl.ts
index 81ee9d6..a3a63e2 100644
--- a/web/src/locales/nl.ts
+++ b/web/src/locales/nl.ts
@@ -861,6 +861,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Nieuw bericht",
+    "New mail": "Nieuwe e-mail",
+    "Could not do that — open ihasmail and try again": "Dat lukte niet — open ihasmail en probeer het opnieuw",
     "Sending…": "Bezig met verzenden…",
     "Saving…": "Bezig met opslaan…",
     "Error": "Fout",
diff --git a/web/src/locales/pt-BR.ts b/web/src/locales/pt-BR.ts
index b899c88..533daea 100644
--- a/web/src/locales/pt-BR.ts
+++ b/web/src/locales/pt-BR.ts
@@ -868,6 +868,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Nova mensagem",
+    "New mail": "Novo e-mail",
+    "Could not do that — open ihasmail and try again": "Não foi possível fazer isso — abra o ihasmail e tente novamente",
     "Sending…": "Enviando…",
     "Saving…": "Salvando…",
     "Error": "Erro",
diff --git a/web/src/locales/ru.ts b/web/src/locales/ru.ts
index 39a86e3..4f3bec9 100644
--- a/web/src/locales/ru.ts
+++ b/web/src/locales/ru.ts
@@ -867,6 +867,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Новое письмо",
+    "New mail": "Новое письмо",
+    "Could not do that — open ihasmail and try again": "Не удалось — откройте ihasmail и повторите попытку",
     "Sending…": "Отправка…",
     "Saving…": "Сохранение…",
     "Error": "Ошибка",
diff --git a/web/src/locales/uk.ts b/web/src/locales/uk.ts
index 606a8c2..509e6cd 100644
--- a/web/src/locales/uk.ts
+++ b/web/src/locales/uk.ts
@@ -861,6 +861,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "Новий лист",
+    "New mail": "Новий лист",
+    "Could not do that — open ihasmail and try again": "Не вдалося — відкрийте ihasmail і повторіть спробу",
     "Sending…": "Надсилання…",
     "Saving…": "Збереження…",
     "Error": "Помилка",
diff --git a/web/src/locales/zh-Hans.ts b/web/src/locales/zh-Hans.ts
index fa73af0..ac294ae 100644
--- a/web/src/locales/zh-Hans.ts
+++ b/web/src/locales/zh-Hans.ts
@@ -872,6 +872,8 @@ export const catalog: Catalog = {
 
     // ── Composer status, calendar title ────────────────────────────────
     "New message": "新邮件",
+    "New mail": "新邮件",
+    "Could not do that — open ihasmail and try again": "无法执行 — 请打开 ihasmail 后重试",
     "Sending…": "正在发送…",
     "Saving…": "正在保存…",
     "Error": "错误",