diff --git a/.changeset/30512-service-mailbox-locales.md b/.changeset/30512-service-mailbox-locales.md
new file mode 100644
index 00000000000..25a89ac8b6f
--- /dev/null
+++ b/.changeset/30512-service-mailbox-locales.md
@@ -0,0 +1,10 @@
+---
+'@objectstack/service-mailbox': patch
+---
+
+i18n(service-mailbox): the mailbox objects' labels, help, options and views ship in all eleven platform languages
+
+Clause-②: no
+Metadata-protocol: none
+
+The mailbox objects (`sys_mailbox`, `sys_mail_message` and `sys_mail_association`) now carry Traditional Chinese (`zh-Hant`), Arabic (`ar`), French (`fr`), Brazilian Portuguese (`pt-BR`), Russian (`ru`), German (`de`) and Korean (`ko`) beside the existing `en`, `zh-CN`, `ja-JP` and `es-ES`, so a user reading the app in one of those languages sees the mailbox screens in their own language instead of English. RFC 5322 header names (`Message-ID`, `In-Reply-To`, `Reply-To`, …) and the IMAP `UIDVALIDITY` term stay as written, as they already do in `zh-CN`. Each new locale is registered under its platform-table tag with its source-hash companion, and the package's extract command lists the seven tags, so the existing `check:i18n` bundle check covers them. Part of #30512.
diff --git a/packages/services/service-mailbox/scripts/i18n-extract.config.ts b/packages/services/service-mailbox/scripts/i18n-extract.config.ts
index 08692178301..59e79a8b607 100644
--- a/packages/services/service-mailbox/scripts/i18n-extract.config.ts
+++ b/packages/services/service-mailbox/scripts/i18n-extract.config.ts
@@ -7,7 +7,7 @@
  * `--merge` preserves every hand-translated string.
  *
  *   os i18n extract packages/services/service-mailbox/scripts/i18n-extract.config.ts \
- *     --locales=zh-CN,ja-JP,es-ES --fill=default --objects-only --no-metadata-forms \
+ *     --locales=zh-CN,ja-JP,es-ES,zh-Hant,ar,fr,pt-BR,ru,de,ko --fill=default --objects-only --no-metadata-forms \
  *     --source-hashes \
  *     --out=packages/services/service-mailbox/src/translations
  *
@@ -41,6 +41,13 @@ import { enObjects } from '../src/translations/en.objects.generated.js';
 import { zhCNObjects } from '../src/translations/zh-CN.objects.generated.js';
 import { jaJPObjects } from '../src/translations/ja-JP.objects.generated.js';
 import { esESObjects } from '../src/translations/es-ES.objects.generated.js';
+import { zhHantObjects } from '../src/translations/zh-Hant.objects.generated.js';
+import { arObjects } from '../src/translations/ar.objects.generated.js';
+import { frObjects } from '../src/translations/fr.objects.generated.js';
+import { ptBRObjects } from '../src/translations/pt-BR.objects.generated.js';
+import { ruObjects } from '../src/translations/ru.objects.generated.js';
+import { deObjects } from '../src/translations/de.objects.generated.js';
+import { koObjects } from '../src/translations/ko.objects.generated.js';
 
 /**
  * The annotation is load-bearing, not decoration (#10868). `defineStack`
@@ -63,6 +70,13 @@ const config: ObjectStackDefinition = defineStack({
     { 'zh-CN': { objects: zhCNObjects } },
     { 'ja-JP': { objects: jaJPObjects } },
     { 'es-ES': { objects: esESObjects } },
+    { 'zh-Hant': { objects: zhHantObjects } },
+    { 'ar': { objects: arObjects } },
+    { 'fr': { objects: frObjects } },
+    { 'pt-BR': { objects: ptBRObjects } },
+    { 'ru': { objects: ruObjects } },
+    { 'de': { objects: deObjects } },
+    { 'ko': { objects: koObjects } },
   ],
 });
 
diff --git a/packages/services/service-mailbox/src/translations/ar.objects.generated.ts b/packages/services/service-mailbox/src/translations/ar.objects.generated.ts
new file mode 100644
index 00000000000..8c5672bab3b
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ar.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ar'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const arObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "صندوق البريد",
+    pluralLabel: "صناديق البريد",
+    description: "صندوق بريد وارد تنسخ المنصّة رسائله: عنوانه ومالكه",
+    fields: {
+      id: {
+        label: "معرّف صندوق البريد"
+      },
+      name: {
+        label: "الاسم",
+        help: "الاسم المعروض لصندوق البريد (مثل \"بريد المبيعات\")"
+      },
+      address: {
+        label: "العنوان",
+        help: "عنوان صندوق البريد. لا يُطابَق أبدًا كمشارك: فالرسالة المرسلة إلى هذا الصندوق لا تخصّ الصندوق نفسه."
+      },
+      owner_user_id: {
+        label: "المالك",
+        help: "المستخدم الذي يملك صندوق البريد هذا. تُعرَض على المالك كل رسالة وصلت إليه، بما فيها غير المرتبطة."
+      },
+      imap_folder: {
+        label: "المجلد المتزامن",
+        help: "مجلد IMAP الذي يتبع له مؤشر المزامنة. عند مزامنة صندوق البريد من مجلد آخر، يبدأ المؤشر من جديد."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "قيمة UIDVALIDITY للمجلد التي أُخذ المؤشر بموجبها. عندما يُبلغ الخادم قيمة أخرى، تشير معرّفات UID فيه إلى رسائل أخرى ويبدأ المؤشر من جديد."
+      },
+      imap_last_uid: {
+        label: "آخر UID متزامن",
+        help: "أعلى UID في المجلد سُلِّم بالفعل إلى الاستيعاب (خُزِّن، أو وُجد مخزَّنًا، أو حُجب، أو تُخطّي). تجلب المزامنة التالية معرّفات UID الأعلى منه."
+      },
+      imap_synced_at: {
+        label: "وقت آخر مزامنة",
+        help: "وقت انتهاء المزامنة آخر مرة من المرور على المجلد."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "رسالة بريد",
+    pluralLabel: "رسائل البريد",
+    description: "رسالة بريد واردة منسوخة من صندوق بريد",
+    fields: {
+      id: {
+        label: "معرّف الرسالة"
+      },
+      mailbox_id: {
+        label: "صندوق البريد",
+        help: "صندوق البريد الذي وصلت إليه الرسالة"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "ترويسة Message-ID بعد إزالة الأقواس الزاوية"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "ترويسة In-Reply-To: معرّفات الرسائل التي تردّ عليها هذه الرسالة، مفصولة بمسافات"
+      },
+      reference_ids: {
+        label: "References",
+        help: "ترويسة References: معرّفات رسائل سلسلة المحادثة، مفصولة بمسافات"
+      },
+      from_address: {
+        label: "المرسِل",
+        help: "أول عنوان في From. تُنسخ الرسالة التي لا تحتوي عليه أيضًا ولا تُسقط أبدًا."
+      },
+      from_name: {
+        label: "اسم المرسِل",
+        help: "الاسم المعروض لأول عنوان في From"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "ترويسة Sender، عندما تحملها الرسالة"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "عناوين Reply-To مفصولة بفواصل"
+      },
+      to_addresses: {
+        label: "إلى",
+        help: "عناوين To مفصولة بفواصل"
+      },
+      cc_addresses: {
+        label: "نسخة إلى",
+        help: "عناوين Cc مفصولة بفواصل"
+      },
+      sent_at: {
+        label: "وقت الإرسال",
+        help: "ترويسة Date: الوقت الذي يقول المرسِل إن الرسالة كُتبت فيه"
+      },
+      received_at: {
+        label: "وقت الاستلام",
+        help: "وقت استلام صندوق البريد للرسالة"
+      },
+      subject: {
+        label: "الموضوع"
+      },
+      body_text: {
+        label: "النص (نص عادي)"
+      },
+      body_html: {
+        label: "النص (HTML)",
+        help: "جزء HTML كما كتبه المرسِل، يُخزَّن حرفيًا ولا يُعرض أبدًا دون تعقيم"
+      },
+      match_addresses: {
+        label: "عناوين المطابقة",
+        help: "عناوين المشاركين التي طوبقت معها السجلات، باستثناء عنوان صندوق البريد نفسه؛ تعيد إعادة المطابقة تشغيل هذه العناوين نفسها تمامًا"
+      },
+      association_state: {
+        label: "الارتباط",
+        help: "ما إذا كان أي سجل قد طابق الرسالة. تنتظر الرسالة غير المرتبطة في المجموعة المقيّدة.",
+        options: {
+          associated: "مرتبطة",
+          unassociated: "غير مرتبطة"
+        }
+      },
+      dedupe_key: {
+        label: "مفتاح إزالة التكرار",
+        help: "تجزئة Message-ID بعد التطبيع (أو تجزئة كتلة الترويسات إن لم يوجد)؛ صف واحد لكل رسالة في كل صندوق بريد"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "ارتباط البريد",
+    pluralLabel: "ارتباطات البريد",
+    description: "يربط رسالة واردة منسوخة بالسجل الذي تنتمي إليه",
+    fields: {
+      id: {
+        label: "معرّف الارتباط"
+      },
+      mail_message_id: {
+        label: "الرسالة"
+      },
+      object_name: {
+        label: "الكائن",
+        help: "الاسم البرمجي للكائن الذي ينتمي إليه السجل المرتبط"
+      },
+      record_id: {
+        label: "معرّف السجل",
+        help: "معرّف السجل المرتبط، في الكائن المحدد في \"الكائن\""
+      },
+      matched_address: {
+        label: "العنوان المطابق",
+        help: "عنوان المشارك الذي طابق السجل"
+      },
+      matched_field: {
+        label: "الحقل المطابق",
+        help: "حقل البريد الإلكتروني في السجل الذي ساوت قيمته العنوان المطابق"
+      },
+      matched_by: {
+        label: "طريقة المطابقة",
+        help: "ما إذا كان الربط قد سُجّل عند وصول الرسالة أم أُضيف بإعادة مطابقة لاحقة",
+        options: {
+          ingest: "الاستيعاب",
+          rematch: "إعادة المطابقة"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/ar.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/ar.source-hashes.generated.ts
new file mode 100644
index 00000000000..d82be859680
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ar.source-hashes.generated.ts
@@ -0,0 +1,27 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ar'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const arGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};
diff --git a/packages/services/service-mailbox/src/translations/de.objects.generated.ts b/packages/services/service-mailbox/src/translations/de.objects.generated.ts
new file mode 100644
index 00000000000..b05c08a12d4
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/de.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'de'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const deObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "Postfach",
+    pluralLabel: "Postfächer",
+    description: "Ein eingehendes Postfach, dessen E-Mails die Plattform spiegelt: seine Adresse und sein Eigentümer",
+    fields: {
+      id: {
+        label: "Postfach-ID"
+      },
+      name: {
+        label: "Name",
+        help: "Anzeigename des Postfachs (zum Beispiel „Vertriebs-Posteingang“)"
+      },
+      address: {
+        label: "Adresse",
+        help: "Die Adresse des Postfachs. Wird nie als Teilnehmer abgeglichen: Eine Nachricht an dieses Postfach betrifft nicht das Postfach selbst."
+      },
+      owner_user_id: {
+        label: "Eigentümer",
+        help: "Der Benutzer, dem dieses Postfach gehört. Dem Eigentümer wird jede eingegangene Nachricht bereitgestellt, auch nicht zugeordnete."
+      },
+      imap_folder: {
+        label: "Synchronisierter Ordner",
+        help: "Der IMAP-Ordner, zu dem der Synchronisierungscursor gehört. Wird das Postfach aus einem anderen Ordner synchronisiert, beginnt der Cursor von vorn."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "Die UIDVALIDITY des Ordners, unter der der Cursor gesetzt wurde. Meldet der Server einen anderen Wert, bezeichnen seine UIDs andere Nachrichten und der Cursor beginnt von vorn."
+      },
+      imap_last_uid: {
+        label: "Zuletzt synchronisierte UID",
+        help: "Die höchste UID des Ordners, die bereits an die Aufnahme übergeben wurde (gespeichert, bereits vorhanden, unterdrückt oder übersprungen). Die nächste Synchronisierung holt die UIDs darüber."
+      },
+      imap_synced_at: {
+        label: "Zuletzt synchronisiert am",
+        help: "Wann die Synchronisierung zuletzt einen Durchlauf über den Ordner abgeschlossen hat."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "E-Mail-Nachricht",
+    pluralLabel: "E-Mail-Nachrichten",
+    description: "Eingehende Nachricht, aus einem Postfach gespiegelt",
+    fields: {
+      id: {
+        label: "Nachrichten-ID"
+      },
+      mailbox_id: {
+        label: "Postfach",
+        help: "Das Postfach, in dem die Nachricht eingegangen ist"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "Der Message-ID-Header, ohne spitze Klammern"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "Der In-Reply-To-Header: die Nachrichten-IDs, auf die diese Nachricht antwortet, durch Leerzeichen getrennt"
+      },
+      reference_ids: {
+        label: "References",
+        help: "Der References-Header: die Nachrichten-IDs des Threads, durch Leerzeichen getrennt"
+      },
+      from_address: {
+        label: "Von",
+        help: "Die erste From-Adresse. Eine Nachricht ohne sie wird trotzdem gespiegelt, nie verworfen."
+      },
+      from_name: {
+        label: "Absendername",
+        help: "Der Anzeigename der ersten From-Adresse"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "Der Sender-Header, sofern die Nachricht einen trägt"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "Durch Kommas getrennte Reply-To-Adressen"
+      },
+      to_addresses: {
+        label: "An",
+        help: "Durch Kommas getrennte To-Adressen"
+      },
+      cc_addresses: {
+        label: "Cc",
+        help: "Durch Kommas getrennte Cc-Adressen"
+      },
+      sent_at: {
+        label: "Gesendet am",
+        help: "Der Date-Header: wann die Nachricht laut Absender geschrieben wurde"
+      },
+      received_at: {
+        label: "Empfangen am",
+        help: "Wann das Postfach die Nachricht empfangen hat"
+      },
+      subject: {
+        label: "Betreff"
+      },
+      body_text: {
+        label: "Inhalt (Text)"
+      },
+      body_html: {
+        label: "Inhalt (HTML)",
+        help: "Der HTML-Teil, wie der Absender ihn geschrieben hat, unverändert gespeichert und nie unbereinigt dargestellt"
+      },
+      match_addresses: {
+        label: "Abgleichadressen",
+        help: "Die Teilnehmeradressen, mit denen Datensätze abgeglichen wurden, ohne die eigene Adresse des Postfachs; ein erneuter Abgleich verwendet genau diese"
+      },
+      association_state: {
+        label: "Zuordnung",
+        help: "Ob ein Datensatz zur Nachricht passte. Eine nicht zugeordnete Nachricht wartet im eingeschränkten Pool.",
+        options: {
+          associated: "Zugeordnet",
+          unassociated: "Nicht zugeordnet"
+        }
+      },
+      dedupe_key: {
+        label: "Deduplizierungsschlüssel",
+        help: "Hash der normalisierten Message-ID (oder des Header-Blocks, wenn keine vorhanden ist); eine Zeile pro Nachricht und Postfach"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "E-Mail-Zuordnung",
+    pluralLabel: "E-Mail-Zuordnungen",
+    description: "Verknüpft eine gespiegelte eingehende Nachricht mit dem Datensatz, zu dem sie gehört",
+    fields: {
+      id: {
+        label: "Zuordnungs-ID"
+      },
+      mail_message_id: {
+        label: "Nachricht"
+      },
+      object_name: {
+        label: "Objekt",
+        help: "Technischer Name des Objekts, zu dem der zugeordnete Datensatz gehört"
+      },
+      record_id: {
+        label: "Datensatz-ID",
+        help: "ID des zugeordneten Datensatzes im unter „Objekt“ genannten Objekt"
+      },
+      matched_address: {
+        label: "Abgeglichene Adresse",
+        help: "Die Teilnehmeradresse, die zum Datensatz passte"
+      },
+      matched_field: {
+        label: "Abgeglichenes Feld",
+        help: "Das E-Mail-Feld des Datensatzes, dessen Wert der abgeglichenen Adresse entsprach"
+      },
+      matched_by: {
+        label: "Abgeglichen durch",
+        help: "Ob die Verknüpfung beim Eingang der Nachricht gesetzt oder durch einen späteren erneuten Abgleich hinzugefügt wurde",
+        options: {
+          ingest: "Aufnahme",
+          rematch: "Erneuter Abgleich"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/de.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/de.source-hashes.generated.ts
new file mode 100644
index 00000000000..fe46e954da3
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/de.source-hashes.generated.ts
@@ -0,0 +1,29 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'de'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const deGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.cc_addresses.label": "02946d952cf15623",
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+  "objects.sys_mailbox.fields.name.label": "5274417ff1ccaf01",
+};
diff --git a/packages/services/service-mailbox/src/translations/fr.objects.generated.ts b/packages/services/service-mailbox/src/translations/fr.objects.generated.ts
new file mode 100644
index 00000000000..8c3234f12e5
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/fr.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'fr'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const frObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "Boîte aux lettres",
+    pluralLabel: "Boîtes aux lettres",
+    description: "Une boîte de réception dont la plateforme reflète le courrier : son adresse et son propriétaire",
+    fields: {
+      id: {
+        label: "ID de la boîte aux lettres"
+      },
+      name: {
+        label: "Nom",
+        help: "Nom affiché de la boîte aux lettres (par exemple « Boîte des ventes »)"
+      },
+      address: {
+        label: "Adresse",
+        help: "L’adresse de la boîte aux lettres. Jamais rapprochée comme participant : un message adressé à cette boîte ne concerne pas la boîte elle-même."
+      },
+      owner_user_id: {
+        label: "Propriétaire",
+        help: "L’utilisateur propriétaire de cette boîte aux lettres. Le propriétaire reçoit chaque message arrivé dans la boîte, y compris ceux non associés."
+      },
+      imap_folder: {
+        label: "Dossier synchronisé",
+        help: "Le dossier IMAP auquel appartient le curseur de synchronisation. Si la boîte est synchronisée depuis un autre dossier, le curseur repart de zéro."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "L’UIDVALIDITY du dossier sous lequel le curseur a été pris. Si le serveur annonce une autre valeur, ses UID désignent d’autres messages et le curseur repart de zéro."
+      },
+      imap_last_uid: {
+        label: "Dernier UID synchronisé",
+        help: "Le plus grand UID du dossier déjà transmis à l’ingestion (stocké, déjà présent, supprimé ou ignoré). La synchronisation suivante récupère les UID supérieurs."
+      },
+      imap_synced_at: {
+        label: "Dernière synchronisation",
+        help: "Moment où la synchronisation a terminé son dernier passage sur le dossier."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "Message",
+    pluralLabel: "Messages",
+    description: "Message entrant reflété depuis une boîte aux lettres",
+    fields: {
+      id: {
+        label: "ID du message"
+      },
+      mailbox_id: {
+        label: "Boîte aux lettres",
+        help: "La boîte aux lettres où le message est arrivé"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "L’en-tête Message-ID, chevrons retirés"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "L’en-tête In-Reply-To : les identifiants des messages auxquels celui-ci répond, séparés par des espaces"
+      },
+      reference_ids: {
+        label: "References",
+        help: "L’en-tête References : les identifiants des messages du fil, séparés par des espaces"
+      },
+      from_address: {
+        label: "De",
+        help: "La première adresse From. Un message sans adresse est tout de même reflété, jamais écarté."
+      },
+      from_name: {
+        label: "Nom de l’expéditeur",
+        help: "Le nom affiché de la première adresse From"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "L’en-tête Sender, lorsque le message en porte un"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "Adresses Reply-To séparées par des virgules"
+      },
+      to_addresses: {
+        label: "À",
+        help: "Adresses To séparées par des virgules"
+      },
+      cc_addresses: {
+        label: "Cc",
+        help: "Adresses Cc séparées par des virgules"
+      },
+      sent_at: {
+        label: "Envoyé le",
+        help: "L’en-tête Date : le moment où l’expéditeur dit avoir écrit le message"
+      },
+      received_at: {
+        label: "Reçu le",
+        help: "Moment où la boîte aux lettres a reçu le message"
+      },
+      subject: {
+        label: "Objet"
+      },
+      body_text: {
+        label: "Corps (texte)"
+      },
+      body_html: {
+        label: "Corps (HTML)",
+        help: "La partie HTML telle que l’expéditeur l’a écrite, stockée telle quelle et jamais affichée sans assainissement"
+      },
+      match_addresses: {
+        label: "Adresses de rapprochement",
+        help: "Les adresses des participants avec lesquelles les enregistrements ont été rapprochés, hors l’adresse de la boîte elle-même ; un nouveau rapprochement rejoue exactement celles-ci"
+      },
+      association_state: {
+        label: "Association",
+        help: "Indique si un enregistrement correspond au message. Un message non associé attend dans le pool restreint.",
+        options: {
+          associated: "Associé",
+          unassociated: "Non associé"
+        }
+      },
+      dedupe_key: {
+        label: "Clé de dédoublonnage",
+        help: "Hachage du Message-ID normalisé (ou du bloc d’en-têtes s’il n’y en a pas) ; une ligne par message et par boîte aux lettres"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "Association de courrier",
+    pluralLabel: "Associations de courrier",
+    description: "Relie un message entrant reflété à l’enregistrement auquel il appartient",
+    fields: {
+      id: {
+        label: "ID de l’association"
+      },
+      mail_message_id: {
+        label: "Message"
+      },
+      object_name: {
+        label: "Objet",
+        help: "Nom technique de l’objet auquel appartient l’enregistrement associé"
+      },
+      record_id: {
+        label: "ID de l’enregistrement",
+        help: "Identifiant de l’enregistrement associé, dans l’objet indiqué par Objet"
+      },
+      matched_address: {
+        label: "Adresse rapprochée",
+        help: "L’adresse du participant qui correspond à l’enregistrement"
+      },
+      matched_field: {
+        label: "Champ rapproché",
+        help: "Le champ e-mail de l’enregistrement dont la valeur est égale à l’adresse rapprochée"
+      },
+      matched_by: {
+        label: "Rapproché par",
+        help: "Indique si le lien a été posé à l’arrivée du message ou ajouté par un rapprochement ultérieur",
+        options: {
+          ingest: "Ingestion",
+          rematch: "Nouveau rapprochement"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/fr.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/fr.source-hashes.generated.ts
new file mode 100644
index 00000000000..558868c0221
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/fr.source-hashes.generated.ts
@@ -0,0 +1,30 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'fr'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const frGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_association.fields.mail_message_id.label": "2af15199795c25b9",
+  "objects.sys_mail_message.fields.association_state.label": "84538af43219262a",
+  "objects.sys_mail_message.fields.cc_addresses.label": "02946d952cf15623",
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};
diff --git a/packages/services/service-mailbox/src/translations/index.ts b/packages/services/service-mailbox/src/translations/index.ts
index 838d1fd20c9..456365f2eca 100644
--- a/packages/services/service-mailbox/src/translations/index.ts
+++ b/packages/services/service-mailbox/src/translations/index.ts
@@ -17,9 +17,23 @@ import { enObjects } from './en.objects.generated.js';
 import { zhCNObjects } from './zh-CN.objects.generated.js';
 import { jaJPObjects } from './ja-JP.objects.generated.js';
 import { esESObjects } from './es-ES.objects.generated.js';
+import { zhHantObjects } from './zh-Hant.objects.generated.js';
+import { arObjects } from './ar.objects.generated.js';
+import { frObjects } from './fr.objects.generated.js';
+import { ptBRObjects } from './pt-BR.objects.generated.js';
+import { ruObjects } from './ru.objects.generated.js';
+import { deObjects } from './de.objects.generated.js';
+import { koObjects } from './ko.objects.generated.js';
 import { zhCNGeneratedSourceHashes } from './zh-CN.source-hashes.generated.js';
 import { jaJPGeneratedSourceHashes } from './ja-JP.source-hashes.generated.js';
 import { esESGeneratedSourceHashes } from './es-ES.source-hashes.generated.js';
+import { zhHantGeneratedSourceHashes } from './zh-Hant.source-hashes.generated.js';
+import { arGeneratedSourceHashes } from './ar.source-hashes.generated.js';
+import { frGeneratedSourceHashes } from './fr.source-hashes.generated.js';
+import { ptBRGeneratedSourceHashes } from './pt-BR.source-hashes.generated.js';
+import { ruGeneratedSourceHashes } from './ru.source-hashes.generated.js';
+import { deGeneratedSourceHashes } from './de.source-hashes.generated.js';
+import { koGeneratedSourceHashes } from './ko.source-hashes.generated.js';
 
 /**
  * ## The provenance companions are READ here, not merely recorded
@@ -55,4 +69,11 @@ export const MailboxTranslations: TranslationBundle = {
   'zh-CN': withSourceFallback({ objects: zhCNObjects }, enSource, undefined, zhCNGeneratedSourceHashes),
   'ja-JP': withSourceFallback({ objects: jaJPObjects }, enSource, undefined, jaJPGeneratedSourceHashes),
   'es-ES': withSourceFallback({ objects: esESObjects }, enSource, undefined, esESGeneratedSourceHashes),
+  'zh-Hant': withSourceFallback({ objects: zhHantObjects }, enSource, undefined, zhHantGeneratedSourceHashes),
+  'ar': withSourceFallback({ objects: arObjects }, enSource, undefined, arGeneratedSourceHashes),
+  'fr': withSourceFallback({ objects: frObjects }, enSource, undefined, frGeneratedSourceHashes),
+  'pt-BR': withSourceFallback({ objects: ptBRObjects }, enSource, undefined, ptBRGeneratedSourceHashes),
+  'ru': withSourceFallback({ objects: ruObjects }, enSource, undefined, ruGeneratedSourceHashes),
+  'de': withSourceFallback({ objects: deObjects }, enSource, undefined, deGeneratedSourceHashes),
+  'ko': withSourceFallback({ objects: koObjects }, enSource, undefined, koGeneratedSourceHashes),
 };
diff --git a/packages/services/service-mailbox/src/translations/ko.objects.generated.ts b/packages/services/service-mailbox/src/translations/ko.objects.generated.ts
new file mode 100644
index 00000000000..5fd324e0883
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ko.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ko'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const koObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "메일함",
+    pluralLabel: "메일함",
+    description: "플랫폼이 메일을 미러링하는 수신 메일함: 주소와 소유자",
+    fields: {
+      id: {
+        label: "메일함 ID"
+      },
+      name: {
+        label: "이름",
+        help: "메일함의 표시 이름(예: \"영업 받은편지함\")"
+      },
+      address: {
+        label: "주소",
+        help: "메일함 주소입니다. 참여자로 매칭되지 않습니다. 이 메일함으로 온 메시지는 메일함 자체에 관한 것이 아니기 때문입니다."
+      },
+      owner_user_id: {
+        label: "소유자",
+        help: "이 메일함을 소유한 사용자입니다. 소유자는 연결되지 않은 메시지를 포함해 이 메일함에 도착한 모든 메시지를 받습니다."
+      },
+      imap_folder: {
+        label: "동기화 폴더",
+        help: "동기화 커서가 속한 IMAP 폴더입니다. 메일함을 다른 폴더에서 동기화하면 커서가 처음부터 다시 시작합니다."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "커서를 기록할 때의 폴더 UIDVALIDITY입니다. 서버가 다른 값을 보고하면 UID가 다른 메시지를 가리키므로 커서가 처음부터 다시 시작합니다."
+      },
+      imap_last_uid: {
+        label: "마지막 동기화 UID",
+        help: "이미 수집 처리로 넘긴 폴더의 최대 UID(저장됨, 이미 저장되어 있음, 억제됨 또는 건너뜀)입니다. 다음 동기화는 그보다 큰 UID를 가져옵니다."
+      },
+      imap_synced_at: {
+        label: "마지막 동기화 일시",
+        help: "동기화가 폴더를 마지막으로 한 차례 끝낸 시각입니다."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "메일 메시지",
+    pluralLabel: "메일 메시지",
+    description: "메일함에서 미러링한 수신 메일 메시지",
+    fields: {
+      id: {
+        label: "메시지 ID"
+      },
+      mailbox_id: {
+        label: "메일함",
+        help: "메시지가 도착한 메일함"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "꺾쇠괄호를 제거한 Message-ID 헤더"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "In-Reply-To 헤더: 이 메시지가 회신하는 메시지 ID(공백으로 구분)"
+      },
+      reference_ids: {
+        label: "References",
+        help: "References 헤더: 스레드의 메시지 ID(공백으로 구분)"
+      },
+      from_address: {
+        label: "보낸 사람",
+        help: "첫 번째 From 주소입니다. 주소가 없는 메시지도 버리지 않고 미러링합니다."
+      },
+      from_name: {
+        label: "보낸 사람 이름",
+        help: "첫 번째 From 주소의 표시 이름"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "메시지에 있는 경우 Sender 헤더"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "쉼표로 구분한 Reply-To 주소"
+      },
+      to_addresses: {
+        label: "받는 사람",
+        help: "쉼표로 구분한 To 주소"
+      },
+      cc_addresses: {
+        label: "참조",
+        help: "쉼표로 구분한 Cc 주소"
+      },
+      sent_at: {
+        label: "보낸 일시",
+        help: "Date 헤더: 보낸 사람이 밝힌 메시지 작성 시각"
+      },
+      received_at: {
+        label: "받은 일시",
+        help: "메일함이 메시지를 받은 시각"
+      },
+      subject: {
+        label: "제목"
+      },
+      body_text: {
+        label: "본문(텍스트)"
+      },
+      body_html: {
+        label: "본문(HTML)",
+        help: "보낸 사람이 작성한 그대로의 HTML 부분으로, 원문 그대로 저장되며 정제하지 않은 채로는 렌더링되지 않습니다"
+      },
+      match_addresses: {
+        label: "매칭 주소",
+        help: "레코드 매칭에 사용한 참여자 주소(메일함 자체 주소 제외)이며, 다시 매칭할 때 정확히 이 주소들을 재사용합니다"
+      },
+      association_state: {
+        label: "연결",
+        help: "메시지와 매칭된 레코드가 있는지 여부입니다. 연결되지 않은 메시지는 제한된 풀에서 대기합니다.",
+        options: {
+          associated: "연결됨",
+          unassociated: "연결 안 됨"
+        }
+      },
+      dedupe_key: {
+        label: "중복 제거 키",
+        help: "정규화한 Message-ID의 해시(없으면 헤더 블록의 해시)이며, 메일함별로 메시지당 한 행입니다"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "메일 연결",
+    pluralLabel: "메일 연결",
+    description: "미러링된 수신 메시지를 해당 레코드에 연결합니다",
+    fields: {
+      id: {
+        label: "연결 ID"
+      },
+      mail_message_id: {
+        label: "메시지"
+      },
+      object_name: {
+        label: "개체",
+        help: "연결된 레코드가 속한 개체의 시스템 이름"
+      },
+      record_id: {
+        label: "레코드 ID",
+        help: "\"개체\"가 가리키는 개체 안에 있는 연결된 레코드의 ID"
+      },
+      matched_address: {
+        label: "매칭된 주소",
+        help: "레코드와 매칭된 참여자 주소"
+      },
+      matched_field: {
+        label: "매칭된 필드",
+        help: "값이 매칭된 주소와 같은 레코드의 이메일 필드"
+      },
+      matched_by: {
+        label: "매칭 방식",
+        help: "메시지가 도착할 때 연결이 기록되었는지, 이후 다시 매칭하여 추가되었는지 여부",
+        options: {
+          ingest: "수집",
+          rematch: "다시 매칭"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/ko.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/ko.source-hashes.generated.ts
new file mode 100644
index 00000000000..f3ce68d81ba
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ko.source-hashes.generated.ts
@@ -0,0 +1,27 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ko'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const koGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};
diff --git a/packages/services/service-mailbox/src/translations/pt-BR.objects.generated.ts b/packages/services/service-mailbox/src/translations/pt-BR.objects.generated.ts
new file mode 100644
index 00000000000..11c9a259715
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/pt-BR.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'pt-BR'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const ptBRObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "Caixa de correio",
+    pluralLabel: "Caixas de correio",
+    description: "Uma caixa de entrada cujos e-mails a plataforma espelha: o endereço e o proprietário",
+    fields: {
+      id: {
+        label: "ID da caixa de correio"
+      },
+      name: {
+        label: "Nome",
+        help: "Nome de exibição da caixa de correio (por exemplo, \"Caixa de vendas\")"
+      },
+      address: {
+        label: "Endereço",
+        help: "O endereço da caixa de correio. Nunca é comparado como participante: uma mensagem para esta caixa não trata da própria caixa."
+      },
+      owner_user_id: {
+        label: "Proprietário",
+        help: "O usuário proprietário desta caixa de correio. O proprietário vê todas as mensagens que chegaram a ela, inclusive as não associadas."
+      },
+      imap_folder: {
+        label: "Pasta sincronizada",
+        help: "A pasta IMAP à qual pertence o cursor de sincronização. Quando a caixa é sincronizada a partir de outra pasta, o cursor recomeça."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "O UIDVALIDITY da pasta sob o qual o cursor foi obtido. Quando o servidor informa outro valor, seus UIDs indicam outras mensagens e o cursor recomeça."
+      },
+      imap_last_uid: {
+        label: "Último UID sincronizado",
+        help: "O maior UID da pasta já entregue à ingestão (armazenado, já encontrado, suprimido ou ignorado). A próxima sincronização busca os UIDs acima dele."
+      },
+      imap_synced_at: {
+        label: "Última sincronização",
+        help: "Quando a sincronização terminou a última passagem pela pasta."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "Mensagem",
+    pluralLabel: "Mensagens",
+    description: "Mensagem de entrada espelhada de uma caixa de correio",
+    fields: {
+      id: {
+        label: "ID da mensagem"
+      },
+      mailbox_id: {
+        label: "Caixa de correio",
+        help: "A caixa de correio onde a mensagem chegou"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "O cabeçalho Message-ID, sem os sinais de menor e maior"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "O cabeçalho In-Reply-To: os IDs das mensagens a que esta responde, separados por espaços"
+      },
+      reference_ids: {
+        label: "References",
+        help: "O cabeçalho References: os IDs das mensagens da conversa, separados por espaços"
+      },
+      from_address: {
+        label: "De",
+        help: "O primeiro endereço From. Uma mensagem sem ele ainda é espelhada, nunca descartada."
+      },
+      from_name: {
+        label: "Nome do remetente",
+        help: "O nome de exibição do primeiro endereço From"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "O cabeçalho Sender, quando a mensagem o tem"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "Endereços Reply-To separados por vírgulas"
+      },
+      to_addresses: {
+        label: "Para",
+        help: "Endereços To separados por vírgulas"
+      },
+      cc_addresses: {
+        label: "Cc",
+        help: "Endereços Cc separados por vírgulas"
+      },
+      sent_at: {
+        label: "Enviado em",
+        help: "O cabeçalho Date: quando o remetente diz que a mensagem foi escrita"
+      },
+      received_at: {
+        label: "Recebido em",
+        help: "Quando a caixa de correio recebeu a mensagem"
+      },
+      subject: {
+        label: "Assunto"
+      },
+      body_text: {
+        label: "Corpo (texto)"
+      },
+      body_html: {
+        label: "Corpo (HTML)",
+        help: "A parte HTML como o remetente a escreveu, armazenada literalmente e nunca exibida sem sanitização"
+      },
+      match_addresses: {
+        label: "Endereços de correspondência",
+        help: "Os endereços dos participantes usados para corresponder registros, exceto o endereço da própria caixa; uma nova correspondência repete exatamente estes"
+      },
+      association_state: {
+        label: "Associação",
+        help: "Se algum registro correspondeu à mensagem. Uma mensagem não associada aguarda no grupo restrito.",
+        options: {
+          associated: "Associada",
+          unassociated: "Não associada"
+        }
+      },
+      dedupe_key: {
+        label: "Chave de desduplicação",
+        help: "Hash do Message-ID normalizado (ou do bloco de cabeçalhos quando não houver); uma linha por mensagem por caixa de correio"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "Associação de e-mail",
+    pluralLabel: "Associações de e-mail",
+    description: "Vincula uma mensagem de entrada espelhada ao registro a que pertence",
+    fields: {
+      id: {
+        label: "ID da associação"
+      },
+      mail_message_id: {
+        label: "Mensagem"
+      },
+      object_name: {
+        label: "Objeto",
+        help: "Nome técnico do objeto ao qual pertence o registro associado"
+      },
+      record_id: {
+        label: "ID do registro",
+        help: "ID do registro associado, no objeto indicado em Objeto"
+      },
+      matched_address: {
+        label: "Endereço correspondente",
+        help: "O endereço do participante que correspondeu ao registro"
+      },
+      matched_field: {
+        label: "Campo correspondente",
+        help: "O campo de e-mail do registro cujo valor é igual ao endereço correspondente"
+      },
+      matched_by: {
+        label: "Correspondido por",
+        help: "Se o vínculo foi registrado quando a mensagem chegou ou adicionado por uma nova correspondência posterior",
+        options: {
+          ingest: "Ingestão",
+          rematch: "Nova correspondência"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/pt-BR.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/pt-BR.source-hashes.generated.ts
new file mode 100644
index 00000000000..840436b8fbb
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/pt-BR.source-hashes.generated.ts
@@ -0,0 +1,28 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'pt-BR'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const ptBRGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.cc_addresses.label": "02946d952cf15623",
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};
diff --git a/packages/services/service-mailbox/src/translations/ru.objects.generated.ts b/packages/services/service-mailbox/src/translations/ru.objects.generated.ts
new file mode 100644
index 00000000000..c7b02e9a6d2
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ru.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ru'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const ruObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "Почтовый ящик",
+    pluralLabel: "Почтовые ящики",
+    description: "Входящий почтовый ящик, письма из которого зеркалирует платформа: его адрес и владелец",
+    fields: {
+      id: {
+        label: "ID почтового ящика"
+      },
+      name: {
+        label: "Имя",
+        help: "Отображаемое имя почтового ящика (например, «Входящие отдела продаж»)"
+      },
+      address: {
+        label: "Адрес",
+        help: "Адрес почтового ящика. Никогда не сопоставляется как участник: письмо в этот ящик не относится к самому ящику."
+      },
+      owner_user_id: {
+        label: "Владелец",
+        help: "Пользователь, которому принадлежит этот почтовый ящик. Владельцу доступно каждое письмо, поступившее в ящик, включая несвязанные."
+      },
+      imap_folder: {
+        label: "Синхронизируемая папка",
+        help: "Папка IMAP, к которой относится курсор синхронизации. Если ящик синхронизируется из другой папки, курсор начинается заново."
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "UIDVALIDITY папки, при котором был получен курсор. Если сервер сообщает другое значение, его UID обозначают другие письма, и курсор начинается заново."
+      },
+      imap_last_uid: {
+        label: "Последний синхронизированный UID",
+        help: "Наибольший UID папки, уже переданный на приём (сохранён, уже был сохранён, подавлен или пропущен). Следующая синхронизация получит UID выше него."
+      },
+      imap_synced_at: {
+        label: "Время последней синхронизации",
+        help: "Когда синхронизация в последний раз завершила проход по папке."
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "Письмо",
+    pluralLabel: "Письма",
+    description: "Входящее письмо, зеркалированное из почтового ящика",
+    fields: {
+      id: {
+        label: "ID письма"
+      },
+      mailbox_id: {
+        label: "Почтовый ящик",
+        help: "Почтовый ящик, в который пришло письмо"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "Заголовок Message-ID без угловых скобок"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "Заголовок In-Reply-To: идентификаторы писем, на которые отвечает это письмо, через пробел"
+      },
+      reference_ids: {
+        label: "References",
+        help: "Заголовок References: идентификаторы писем цепочки через пробел"
+      },
+      from_address: {
+        label: "От",
+        help: "Первый адрес From. Письмо без него всё равно зеркалируется и никогда не отбрасывается."
+      },
+      from_name: {
+        label: "Имя отправителя",
+        help: "Отображаемое имя первого адреса From"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "Заголовок Sender, если он есть в письме"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "Адреса Reply-To через запятую"
+      },
+      to_addresses: {
+        label: "Кому",
+        help: "Адреса To через запятую"
+      },
+      cc_addresses: {
+        label: "Копия",
+        help: "Адреса Cc через запятую"
+      },
+      sent_at: {
+        label: "Отправлено",
+        help: "Заголовок Date: когда, по словам отправителя, письмо было написано"
+      },
+      received_at: {
+        label: "Получено",
+        help: "Когда почтовый ящик получил письмо"
+      },
+      subject: {
+        label: "Тема"
+      },
+      body_text: {
+        label: "Текст (обычный)"
+      },
+      body_html: {
+        label: "Текст (HTML)",
+        help: "HTML-часть в том виде, в каком её написал отправитель; хранится дословно и никогда не отображается без очистки"
+      },
+      match_addresses: {
+        label: "Адреса для сопоставления",
+        help: "Адреса участников, с которыми сопоставлялись записи, без собственного адреса ящика; повторное сопоставление воспроизводит именно их"
+      },
+      association_state: {
+        label: "Связь",
+        help: "Сопоставилась ли с письмом хотя бы одна запись. Несвязанное письмо ожидает в ограниченном пуле.",
+        options: {
+          associated: "Связано",
+          unassociated: "Не связано"
+        }
+      },
+      dedupe_key: {
+        label: "Ключ дедупликации",
+        help: "Хеш нормализованного Message-ID (или блока заголовков, если его нет); одна строка на письмо в каждом почтовом ящике"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "Связь письма",
+    pluralLabel: "Связи писем",
+    description: "Связывает зеркалированное входящее письмо с записью, к которой оно относится",
+    fields: {
+      id: {
+        label: "ID связи"
+      },
+      mail_message_id: {
+        label: "Письмо"
+      },
+      object_name: {
+        label: "Объект",
+        help: "Системное имя объекта, к которому относится связанная запись"
+      },
+      record_id: {
+        label: "ID записи",
+        help: "ID связанной записи в объекте, указанном в поле «Объект»"
+      },
+      matched_address: {
+        label: "Совпавший адрес",
+        help: "Адрес участника, совпавший с записью"
+      },
+      matched_field: {
+        label: "Совпавшее поле",
+        help: "Поле электронной почты записи, значение которого совпало с адресом"
+      },
+      matched_by: {
+        label: "Способ сопоставления",
+        help: "Была ли связь проставлена при поступлении письма или добавлена позднейшим повторным сопоставлением",
+        options: {
+          ingest: "Приём",
+          rematch: "Повторное сопоставление"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/ru.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/ru.source-hashes.generated.ts
new file mode 100644
index 00000000000..ea9b7eff09e
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/ru.source-hashes.generated.ts
@@ -0,0 +1,27 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'ru'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const ruGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};
diff --git a/packages/services/service-mailbox/src/translations/zh-Hant.objects.generated.ts b/packages/services/service-mailbox/src/translations/zh-Hant.objects.generated.ts
new file mode 100644
index 00000000000..2314f5a47f4
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/zh-Hant.objects.generated.ts
@@ -0,0 +1,177 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'zh-Hant'.
+ * Edit translations in place; re-run extract (with --merge) to fill new gaps.
+ * Do not hand-edit the structure — only the leaf string values.
+ * Merge only fills gaps: correcting a source label/description does not
+ * push the correction into a leaf here that already holds a translation —
+ * a present-but-stale string is not a gap, so it is left as-is. Re-translate
+ * it by hand when its source changes; nothing here or in `os i18n check`
+ * tells a leaf a translator updated on purpose from one nobody has looked
+ * at since the source moved.
+ */
+
+import type { TranslationData } from '@objectstack/spec/system';
+
+export const zhHantObjects: NonNullable<TranslationData['objects']> = {
+  sys_mailbox: {
+    label: "郵件信箱",
+    pluralLabel: "郵件信箱",
+    description: "平台從中鏡像入站郵件的信箱：其地址與擁有者",
+    fields: {
+      id: {
+        label: "信箱 ID"
+      },
+      name: {
+        label: "名稱",
+        help: "信箱的顯示名稱（例如「業務收件匣」）"
+      },
+      address: {
+        label: "地址",
+        help: "信箱地址。它從不作為參與者進行比對：寄到此信箱的郵件與信箱本身無關。"
+      },
+      owner_user_id: {
+        label: "擁有者",
+        help: "擁有此信箱的使用者。擁有者可讀取到達此信箱的每一封郵件，包括未關聯的郵件。"
+      },
+      imap_folder: {
+        label: "同步資料夾",
+        help: "同步游標所屬的 IMAP 資料夾。信箱改從其他資料夾同步時，游標會從頭開始。"
+      },
+      imap_uid_validity: {
+        label: "UIDVALIDITY",
+        help: "游標所依據的資料夾 UIDVALIDITY。伺服器回報其他值時，其 UID 指向其他郵件，游標會從頭開始。"
+      },
+      imap_last_uid: {
+        label: "最後同步的 UID",
+        help: "已交給接收處理的資料夾最高 UID（已儲存、已存在、已抑制或已略過）。下次同步會擷取高於它的 UID。"
+      },
+      imap_synced_at: {
+        label: "最後同步時間",
+        help: "同步最近一次完成整個資料夾讀取的時間。"
+      }
+    }
+  },
+  sys_mail_message: {
+    label: "郵件",
+    pluralLabel: "郵件",
+    description: "從信箱鏡像的入站郵件",
+    fields: {
+      id: {
+        label: "郵件 ID"
+      },
+      mailbox_id: {
+        label: "信箱",
+        help: "郵件到達的信箱"
+      },
+      message_id: {
+        label: "Message-ID",
+        help: "Message-ID 郵件標頭，已去除角括號"
+      },
+      in_reply_to: {
+        label: "In-Reply-To",
+        help: "In-Reply-To 郵件標頭：本郵件所回覆郵件的 ID，以空格分隔"
+      },
+      reference_ids: {
+        label: "References",
+        help: "References 郵件標頭：對話中各郵件的 ID，以空格分隔"
+      },
+      from_address: {
+        label: "寄件者",
+        help: "第一個寄件者地址。沒有寄件者的郵件仍會被鏡像，絕不捨棄。"
+      },
+      from_name: {
+        label: "寄件者名稱",
+        help: "第一個寄件者地址的顯示名稱"
+      },
+      sender_address: {
+        label: "Sender",
+        help: "Sender 郵件標頭（若郵件帶有）"
+      },
+      reply_to: {
+        label: "Reply-To",
+        help: "以逗號分隔的 Reply-To 地址"
+      },
+      to_addresses: {
+        label: "收件者",
+        help: "以逗號分隔的收件者地址"
+      },
+      cc_addresses: {
+        label: "副本",
+        help: "以逗號分隔的副本地址"
+      },
+      sent_at: {
+        label: "寄送時間",
+        help: "Date 郵件標頭：寄件者聲明的郵件撰寫時間"
+      },
+      received_at: {
+        label: "接收時間",
+        help: "信箱收到郵件的時間"
+      },
+      subject: {
+        label: "主旨"
+      },
+      body_text: {
+        label: "內文（文字）"
+      },
+      body_html: {
+        label: "內文（HTML）",
+        help: "寄件者撰寫的 HTML 部分，依原樣儲存，絕不在未淨化的情況下呈現"
+      },
+      match_addresses: {
+        label: "比對地址",
+        help: "用於比對記錄的參與者地址（不含信箱本身的地址）；重新比對時依原樣重播這些地址"
+      },
+      association_state: {
+        label: "關聯",
+        help: "是否有記錄與該郵件比對成功。未關聯的郵件會在受限池中等待。",
+        options: {
+          associated: "已關聯",
+          unassociated: "未關聯"
+        }
+      },
+      dedupe_key: {
+        label: "去重鍵",
+        help: "正規化 Message-ID 的雜湊（若無，則為郵件標頭區塊的雜湊）；每個信箱中每封郵件一列"
+      }
+    }
+  },
+  sys_mail_association: {
+    label: "郵件關聯",
+    pluralLabel: "郵件關聯",
+    description: "將鏡像的入站郵件連結到其所屬的記錄",
+    fields: {
+      id: {
+        label: "關聯 ID"
+      },
+      mail_message_id: {
+        label: "郵件"
+      },
+      object_name: {
+        label: "物件",
+        help: "關聯記錄所屬物件的機器名稱"
+      },
+      record_id: {
+        label: "記錄 ID",
+        help: "關聯記錄的 ID，位於「物件」所指的物件中"
+      },
+      matched_address: {
+        label: "比對到的地址",
+        help: "與該記錄比對成功的參與者地址"
+      },
+      matched_field: {
+        label: "比對到的欄位",
+        help: "記錄中其值等於比對地址的電子郵件欄位"
+      },
+      matched_by: {
+        label: "比對方式",
+        help: "此連結是在郵件到達時寫入，還是由之後的重新比對新增",
+        options: {
+          ingest: "接收",
+          rematch: "重新比對"
+        }
+      }
+    }
+  }
+};
diff --git a/packages/services/service-mailbox/src/translations/zh-Hant.source-hashes.generated.ts b/packages/services/service-mailbox/src/translations/zh-Hant.source-hashes.generated.ts
new file mode 100644
index 00000000000..4c061886604
--- /dev/null
+++ b/packages/services/service-mailbox/src/translations/zh-Hant.source-hashes.generated.ts
@@ -0,0 +1,27 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Auto-generated by 'os i18n extract' for locale 'zh-Hant'. Do not hand-edit.
+ *
+ * Each entry is the digest of the SOURCE REVISION that this locale's leaf at
+ * that path is still a byte copy of — provenance for the generated half of the
+ * bundles (commit 09b4f4e4e): a leaf whose digest no longer matches its source is stale and serves the source text instead.
+ *
+ * An entry exists only while the leaf IS such a copy. Re-translate the leaf in
+ * `<locale>.objects.generated.ts` and the next extract drops its entry by
+ * itself — the table makes no claim about text a translator wrote. A path with
+ * no entry is LEGACY-TRUSTED and never reported stale.
+ *
+ * ⚠️ Do not "fix" a staleness report by editing this file. Refreshing a digest
+ * records that the current text was copied from the current source, which is
+ * the false claim the mechanism exists to detect. Fix the TRANSLATION.
+ */
+
+export const zhHantGeneratedSourceHashes: Readonly<Record<string, string>> = {
+  "objects.sys_mail_message.fields.in_reply_to.label": "71bb10a36255d815",
+  "objects.sys_mail_message.fields.message_id.label": "14cd089a4062f4b1",
+  "objects.sys_mail_message.fields.reference_ids.label": "5102fd1664d35c0b",
+  "objects.sys_mail_message.fields.reply_to.label": "90ad8f2ca791a95a",
+  "objects.sys_mail_message.fields.sender_address.label": "89db06253eee9632",
+  "objects.sys_mailbox.fields.imap_uid_validity.label": "5a2ec2b384b73bb0",
+};