Gate email mailbox behind build flags

Adds a shared email mailbox availability flag and hides the /mail route and mailbox UI when the feature is unavailable. Core/web builds enable the inbox, while desktop disables it to avoid unsupported routes. This also updates the demo inbox text and labels to use clearer English copy.

frontend/editor/public/locales/en-US/translation.toml

@@ -3693,6 +3693,45 @@ subtitle = "Import bookmarks, build hierarchies, and apply the outline without c
 description = "Select the Edit Table of Contents tool to load its workspace."
 title = "Open the tool to start editing"
 
+[email]
+accounts = "Accounts"
+attachments = "Attachments"
+back = "Back"
+cacheHint = "Message metadata is cached locally."
+cacheReady = "Local cache active"
+connectAccount = "Connect account"
+connectDescription = "Connect your email account to securely transfer attachments into your PDF workflow."
+connectTitle = "Connect mailbox"
+demoBody = "Attachments can be transferred directly into the Stirling PDF workspace after download."
+download = "Import"
+eyebrow = "File sources"
+firstSetup = "First step"
+folders = "Mailbox"
+inbox = "Inbox"
+message = "Message"
+messageDetails = "Message details"
+messageList = "Message list"
+messages = "messages"
+moreActions = "More actions"
+noAccount = "No account connected yet"
+noAccountHint = "Connect a mailbox to import attachments."
+noResults = "No messages found"
+noResultsHint = "Try a different search term."
+oauthNote = "Sign-in uses OAuth. Passwords are not stored by Stirling."
+queued = "Queued"
+refresh = "Refresh inbox"
+searchPlaceholder = "Search messages"
+selectMessage = "Select a message"
+selectMessageHint = "Choose an email from the list."
+settings = "Email settings"
+star = "Star"
+starred = "Starred"
+storageNote = "Attachments are stored in the file workflow; email data stays in the local cache."
+syncLabel = "Synchronization"
+syncTime = "4 minutes ago"
+title = "Email inbox"
+trash = "Trash"
+
 [emptyFilesState]
 upload = "Upload"
 
@@ -3775,48 +3814,7 @@ closeFile = "Close file"
 [fileEditor]
 addFiles = "Add Files"
 
-[email]
-back = "Back"
-eyebrow = "File sources"
-title = "Email inbox"
-cacheReady = "Local cache active"
-refresh = "Refresh inbox"
-settings = "Email settings"
-accounts = "Accounts"
-connectAccount = "Connect account"
-noAccount = "No account connected yet"
-noAccountHint = "Connect a mailbox to import attachments."
-folders = "Mailbox"
-inbox = "Inbox"
-starred = "Starred"
-trash = "Trash"
-syncLabel = "Synchronization"
-syncTime = "4 minutes ago"
-cacheHint = "Message metadata is cached locally."
-messageList = "Message list"
-messages = "messages"
-searchPlaceholder = "Search messages"
-noResults = "No messages found"
-noResultsHint = "Try a different search term."
-messageDetails = "Message details"
-message = "Message"
-moreActions = "More actions"
-star = "Star"
-demoBody = "Attachments can be transferred directly into the Stirling PDF workspace after download."
-attachments = "Attachments"
-queued = "Queued"
-download = "Import"
-storageNote = "Attachments are stored in the file workflow; email data stays in the local cache."
-selectMessage = "Select a message"
-selectMessageHint = "Choose an email from the list."
-firstSetup = "First step"
-connectTitle = "Connect mailbox"
-connectDescription = "Connect your email account to securely transfer attachments into your PDF workflow."
-oauthNote = "Sign-in uses OAuth. Passwords are not stored by Stirling."
-
 [fileManager]
-email = "Email inbox"
-emailShort = "Email"
 active = "Active"
 addToUpload = "Add to Upload"
 changesNotUploaded = "Changes not uploaded"
@@ -3835,6 +3833,8 @@ details = "File Details"
 download = "Download"
 downloadSelected = "Download Files"
 dropFilesHere = "Drop files here"
+email = "Email inbox"
+emailShort = "Email"
 fileFormat = "Format"
 fileHistory = "File History"
 fileName = "Name"
@@ -3950,7 +3950,6 @@ upload = "Upload"
 workbench = "Workbench"
 
 [fileSidebar]
-email = "Email inbox"
 addFiles = "Add files"
 addingFiles = "Adding files…"
 collapse = "Collapse sidebar"
@@ -3961,6 +3960,7 @@ downloadFailed = "Download failed"
 dropHint = "Open files to get started"
 dropToAdd = "Drop files to add"
 duplicateFailed = "Could not duplicate file"
+email = "Email inbox"
 expand = "Expand sidebar"
 googleDrive = "Google Drive"
 googleDriveDisabled = "Google Drive is not configured"

frontend/editor/src/core/App.tsx

@@ -8,6 +8,7 @@ import { PreferencesProvider } from "@app/contexts/PreferencesContext";
 import HomePage from "@app/pages/HomePage";
 import EmailInboxPage from "@app/pages/EmailInboxPage";
 import Onboarding from "@app/components/onboarding/Onboarding";
+import { EMAIL_MAILBOX_ENABLED } from "@app/constants/emailMailboxAvailability";
 
 const MobileScannerPage = lazy(() => import("@app/pages/MobileScannerPage"));
 const MobileSignPage = lazy(() => import("@app/pages/MobileSignPage"));
@@ -54,16 +55,18 @@ export default function App() {
           }
         />
 
-        <Route
-          path="/mail"
-          element={
-            <AppProviders>
-              <AppLayout>
-                <EmailInboxPage />
-              </AppLayout>
-            </AppProviders>
-          }
-        />
+        {EMAIL_MAILBOX_ENABLED && (
+          <Route
+            path="/mail"
+            element={
+              <AppProviders>
+                <AppLayout>
+                  <EmailInboxPage />
+                </AppLayout>
+              </AppProviders>
+            }
+          />
+        )}
 
         {/* All other routes need AppProviders for backend integration */}
         <Route

frontend/editor/src/core/components/fileManager/FileSourceButtons.tsx

@@ -14,6 +14,7 @@ import { useAppConfig } from "@app/contexts/AppConfigContext";
 import { useIsMobile } from "@app/hooks/useIsMobile";
 import MobileUploadModal from "@app/components/shared/MobileUploadModal";
 import { GoogleDriveIcon } from "@app/components/shared/CloudStorageIcons";
+import { EMAIL_MAILBOX_ENABLED } from "@app/constants/emailMailboxAvailability";
 
 interface FileSourceButtonsProps {
   horizontal?: boolean;
@@ -123,19 +124,21 @@ const FileSourceButtons: React.FC<FileSourceButtonsProps> = ({
         </Button>
       )}
 
-      <Button
-        variant="tertiary"
-        accent="neutral"
-        leftSection={<EmailOutlinedIcon />}
-        justify={buttonJustify}
-        onClick={() => navigate("/mail")}
-        fullWidth={!horizontal}
-        size={buttonSize}
-      >
-        {horizontal
-          ? t("fileManager.emailShort", "Email")
-          : t("fileManager.email", "Email inbox")}
-      </Button>
+      {EMAIL_MAILBOX_ENABLED && (
+        <Button
+          variant="tertiary"
+          accent="neutral"
+          leftSection={<EmailOutlinedIcon />}
+          justify={buttonJustify}
+          onClick={() => navigate("/mail")}
+          fullWidth={!horizontal}
+          size={buttonSize}
+        >
+          {horizontal
+            ? t("fileManager.emailShort", "Email")
+            : t("fileManager.email", "Email inbox")}
+        </Button>
+      )}
 
       {!shouldHideMobileQR && (
         <Button

frontend/editor/src/core/components/shared/FileSidebar.tsx

@@ -76,6 +76,7 @@ import {
   clearWatchedFolderDraggedFileIds,
 } from "@app/components/watchedFolders/watchedFolderDragState";
 import { WATCHED_FOLDERS_ENABLED } from "@app/constants/featureFlags";
+import { EMAIL_MAILBOX_ENABLED } from "@app/constants/emailMailboxAvailability";
 import { useToolWorkflow } from "@app/contexts/ToolWorkflowContext";
 import "@app/components/shared/FileSidebar.css";
 
@@ -1162,37 +1163,39 @@ const FileSidebar = forwardRef<HTMLDivElement, FileSidebarProps>(
               </Tooltip>
             )}
 
-            <Tooltip
-              label={t("fileSidebar.email", "E-Mail-Postfach")}
-              position="right"
-              withinPortal
-              disabled={!collapsed}
-            >
-              <div
-                className="file-sidebar-action-row"
-                data-testid="email-button"
-                onClick={() => {
-                  if (collapsed && onToggleCollapse) onToggleCollapse();
-                  navigate("/mail");
-                }}
-                role="button"
-                tabIndex={0}
-                aria-label={t("fileSidebar.email", "E-Mail-Postfach")}
-                onKeyDown={(e) => {
-                  if (e.key === "Enter" || e.key === " ") {
-                    e.preventDefault();
-                    navigate("/mail");
-                  }
-                }}
+            {EMAIL_MAILBOX_ENABLED && (
+              <Tooltip
+                label={t("fileSidebar.email", "Email inbox")}
+                position="right"
+                withinPortal
+                disabled={!collapsed}
               >
-                <EmailOutlinedIcon className="file-sidebar-action-icon" />
-                {!collapsed && (
-                  <span className="file-sidebar-action-label sidebar-content-fade">
-                    {t("fileSidebar.email", "E-Mail-Postfach")}
-                  </span>
-                )}
-              </div>
-            </Tooltip>
+                <div
+                  className="file-sidebar-action-row"
+                  data-testid="email-button"
+                  onClick={() => {
+                    if (collapsed && onToggleCollapse) onToggleCollapse();
+                    navigate("/mail");
+                  }}
+                  role="button"
+                  tabIndex={0}
+                  aria-label={t("fileSidebar.email", "Email inbox")}
+                  onKeyDown={(e) => {
+                    if (e.key === "Enter" || e.key === " ") {
+                      e.preventDefault();
+                      navigate("/mail");
+                    }
+                  }}
+                >
+                  <EmailOutlinedIcon className="file-sidebar-action-icon" />
+                  {!collapsed && (
+                    <span className="file-sidebar-action-label sidebar-content-fade">
+                      {t("fileSidebar.email", "Email inbox")}
+                    </span>
+                  )}
+                </div>
+              </Tooltip>
+            )}
 
             {/* Watched Folders entry */}
             {WATCHED_FOLDERS_ENABLED && (

frontend/editor/src/core/constants/emailMailboxAvailability.ts

@@ -0,0 +1,2 @@
+// Email mailbox support is enabled for web-based builds.
+export const EMAIL_MAILBOX_ENABLED = true;

frontend/editor/src/core/pages/EmailInboxPage.tsx

@@ -78,8 +78,7 @@ const DEMO_MESSAGES: MailMessage[] = [
     sender: "Nordlicht GmbH",
     address: "buchhaltung@nordlicht.example",
     subject: "Rechnung 2026-0814",
-    preview:
-      "Anbei finden Sie die Rechnung für den aktuellen Abrechnungszeitraum.",
+    preview: "Attached is the invoice for the current billing period.",
     date: "Heute, 09:42",
     unread: true,
     labels: [],
@@ -100,7 +99,7 @@ const DEMO_MESSAGES: MailMessage[] = [
     address: "mara.hoffmann@example.com",
     subject: "Vertragsunterlagen zur Freigabe",
     preview:
-      "Die aktualisierten Unterlagen liegen im Anhang. Bitte um kurze Rückmeldung.",
+      "The updated documents are attached. Please provide a brief response.",
     date: "Gestern",
     hasAttachment: true,
     labels: [],
@@ -116,7 +115,8 @@ const DEMO_MESSAGES: MailMessage[] = [
         id: "terms-docx",
         name: "Anlage_A.docx",
         type: "DOCX",
-        mimeType: "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+        mimeType:
+          "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
         size: "74 KB",
       },
     ],
@@ -125,9 +125,9 @@ const DEMO_MESSAGES: MailMessage[] = [
     id: "meeting-03",
     sender: "Projektteam",
     address: "projektteam@example.com",
-    subject: "Nächste Schritte",
+    subject: "Next steps",
     preview:
-      "Danke für das Gespräch. Die nächsten Schritte sind im Überblick zusammengefasst.",
+      "Thank you for the discussion. The next steps are summarized below.",
     date: "12. Aug.",
     labels: [],
     attachments: [],
@@ -262,19 +262,20 @@ export default function EmailInboxPage() {
             id: message.id,
             sender: sender.name,
             address: sender.address,
-          subject: message.subject || "(Ohne Betreff)",
-          preview: message.preview,
-          date: message.date,
-          unread: message.unread,
-          labels: message.labels ?? [],
-          hasAttachment: true,
-          attachments: message.attachments.map((attachment) => ({
-            id: attachment.id,
-            name: attachment.name,
-            type: attachment.mimeType.split("/").pop()?.toUpperCase() ?? "FILE",
-            mimeType: attachment.mimeType,
-            size: formatFileSize(attachment.size),
-          })),
+            subject: message.subject || "(Ohne Betreff)",
+            preview: message.preview,
+            date: message.date,
+            unread: message.unread,
+            labels: message.labels ?? [],
+            hasAttachment: true,
+            attachments: message.attachments.map((attachment) => ({
+              id: attachment.id,
+              name: attachment.name,
+              type:
+                attachment.mimeType.split("/").pop()?.toUpperCase() ?? "FILE",
+              mimeType: attachment.mimeType,
+              size: formatFileSize(attachment.size),
+            })),
           };
         });
       setMessages((current) =>
@@ -370,7 +371,9 @@ export default function EmailInboxPage() {
   );
   const attachmentTypeOptions = useMemo(
     () =>
-      Array.from(new Set([...attachmentTypes, ...customAttachmentTypes])).sort(),
+      Array.from(
+        new Set([...attachmentTypes, ...customAttachmentTypes]),
+      ).sort(),
     [attachmentTypes, customAttachmentTypes],
   );
 
@@ -382,27 +385,30 @@ export default function EmailInboxPage() {
       selectedLabels.length === 0
     )
       return messages;
-    return messages.filter((message) =>
-      (normalizedQuery
-        ? [message.sender, message.address, message.subject, message.preview]
-            .join(" ")
-            .toLocaleLowerCase()
-            .includes(normalizedQuery)
-        : true) &&
-      (selectedAttachmentTypes.length > 0
-        ? message.attachments.some(
-            (attachment) => selectedAttachmentTypes.includes(attachment.type),
-          )
-        : true) &&
-      (selectedLabels.length > 0
-        ? selectedLabels.some((label) =>
-            (message.labels ?? []).includes(label),
-          )
-        : true),
+    return messages.filter(
+      (message) =>
+        (normalizedQuery
+          ? [message.sender, message.address, message.subject, message.preview]
+              .join(" ")
+              .toLocaleLowerCase()
+              .includes(normalizedQuery)
+          : true) &&
+        (selectedAttachmentTypes.length > 0
+          ? message.attachments.some((attachment) =>
+              selectedAttachmentTypes.includes(attachment.type),
+            )
+          : true) &&
+        (selectedLabels.length > 0
+          ? selectedLabels.some((label) =>
+              (message.labels ?? []).includes(label),
+            )
+          : true),
     );
   }, [messages, query, selectedAttachmentTypes, selectedLabels]);
 
-  const unreadMessageCount = messages.filter((message) => message.unread).length;
+  const unreadMessageCount = messages.filter(
+    (message) => message.unread,
+  ).length;
 
   const selectedMessage =
     filteredMessages.find((message) => message.id === selectedMessageId) ??
@@ -423,7 +429,7 @@ export default function EmailInboxPage() {
   const disconnectAccount = async () => {
     if (
       !window.confirm(
-        "Gmail trennen? Die lokale Verbindung wird gelöscht und der Google-Zugriff widerrufen.",
+        "Disconnect Gmail? The local connection will be deleted and Google access revoked.",
       )
     ) {
       return;
@@ -471,7 +477,7 @@ export default function EmailInboxPage() {
     if (
       alreadyExists &&
       !window.confirm(
-        `Die Datei "${attachment.name}" ist bereits vorhanden. Soll sie erneut importiert werden?`,
+        `The file "${attachment.name}" already exists. Import it again?`,
       )
     ) {
       return;
@@ -496,16 +502,16 @@ export default function EmailInboxPage() {
         <div className="email-page-brand">
           <ActionIcon
             variant="tertiary"
-            aria-label={t("email.back", "Zurück")}
+            aria-label={t("email.back", "Back")}
             onClick={() => navigate("/editor")}
           >
             <ArrowBackIcon fontSize="small" />
           </ActionIcon>
           <div>
             <div className="email-page-eyebrow">
-              {t("email.eyebrow", "Dateiquellen")}
+              {t("email.eyebrow", "File sources")}
             </div>
-            <h1>{t("email.title", "E-Mail-Postfach")}</h1>
+            <h1>{t("email.title", "Email inbox")}</h1>
           </div>
         </div>
         <div className="email-page-header-actions">
@@ -513,19 +519,19 @@ export default function EmailInboxPage() {
             <span className="email-status-dot" />
             {t("email.cacheReady", "Lokaler Cache aktiv")}
           </span>
-          <Tooltip label={t("email.refresh", "Postfach aktualisieren")}>
+          <Tooltip label={t("email.refresh", "Refresh inbox")}>
             <ActionIcon
               variant="tertiary"
-              aria-label={t("email.refresh", "Postfach aktualisieren")}
+              aria-label={t("email.refresh", "Refresh inbox")}
               onClick={refreshInbox}
             >
               <RefreshIcon fontSize="small" />
             </ActionIcon>
           </Tooltip>
-          <Tooltip label={t("email.settings", "E-Mail-Einstellungen")}>
+          <Tooltip label={t("email.settings", "Email settings")}>
             <ActionIcon
               variant="tertiary"
-              aria-label={t("email.settings", "E-Mail-Einstellungen")}
+              aria-label={t("email.settings", "Email settings")}
               onClick={openSettings}
             >
               <SettingsOutlinedIcon fontSize="small" />
@@ -537,7 +543,7 @@ export default function EmailInboxPage() {
       <div className="email-page-body">
         <aside className="email-sidebar">
           <div className="email-sidebar-heading">
-            <span>{t("email.accounts", "Konten")}</span>
+            <span>{t("email.accounts", "Accounts")}</span>
             <Tooltip label={t("email.connectAccount", "Konto verbinden")}>
               <ActionIcon
                 variant="tertiary"
@@ -570,7 +576,7 @@ export default function EmailInboxPage() {
               <span>
                 {t(
                   "email.noAccountHint",
-                  "Verbinde ein Postfach, um Anhänge zu importieren.",
+                  "Connect a mailbox to import attachments.",
                 )}
               </span>
             </div>
@@ -578,14 +584,14 @@ export default function EmailInboxPage() {
 
           <Divider my="md" />
           <div className="email-sidebar-heading">
-            <span>{t("email.folders", "Postfach")}</span>
+            <span>{t("email.folders", "Mailbox")}</span>
           </div>
           <button
             className={`email-folder-row ${selectedFolder === "inbox" ? "is-active" : ""}`}
             onClick={() => setSelectedFolder("inbox")}
           >
             <InboxOutlinedIcon fontSize="small" />
-            <span>{t("email.inbox", "Posteingang")}</span>
+            <span>{t("email.inbox", "Inbox")}</span>
             {unreadMessageCount > 0 && (
               <Badge size="sm" variant="light">
                 {unreadMessageCount}
@@ -597,21 +603,21 @@ export default function EmailInboxPage() {
             onClick={() => setSelectedFolder("starred")}
           >
             <StarBorderIcon fontSize="small" />
-            <span>{t("email.starred", "Markiert")}</span>
+            <span>{t("email.starred", "Starred")}</span>
           </button>
           <button
             className={`email-folder-row ${selectedFolder === "trash" ? "is-active" : ""}`}
             onClick={() => setSelectedFolder("trash")}
           >
             <DeleteOutlineIcon fontSize="small" />
-            <span>{t("email.trash", "Papierkorb")}</span>
+            <span>{t("email.trash", "Trash")}</span>
           </button>
 
           <div className="email-sidebar-footer">
             <span className="email-sync-label">
-              {t("email.syncLabel", "Synchronisierung")}
+              {t("email.syncLabel", "Synchronization")}
             </span>
-            <strong>{t("email.syncTime", "Vor 4 Minuten")}</strong>
+            <strong>{t("email.syncTime", "4 minutes ago")}</strong>
             <span>
               {t(
                 "email.cacheHint",
@@ -623,29 +629,23 @@ export default function EmailInboxPage() {
 
         <section
           className="email-message-column"
-          aria-label={t("email.messageList", "E-Mail-Liste")}
+          aria-label={t("email.messageList", "Email list")}
         >
           <div className="email-column-toolbar">
             <div className="email-toolbar-top">
               <div>
                 <h2>{t("email.inbox", "Posteingang")}</h2>
                 <span>
-                  {filteredMessages.length} {t("email.messages", "Nachrichten")}
+                  {filteredMessages.length} {t("email.messages", "messages")}
                 </span>
               </div>
               <TextInput
                 className="email-search"
                 value={query}
                 onChange={(event) => setQuery(event.currentTarget.value)}
-                placeholder={t(
-                  "email.searchPlaceholder",
-                  "Nachrichten durchsuchen",
-                )}
+                placeholder={t("email.searchPlaceholder", "Search messages")}
                 leftSection={<SearchIcon fontSize="small" />}
-                aria-label={t(
-                  "email.searchPlaceholder",
-                  "Nachrichten durchsuchen",
-                )}
+                aria-label={t("email.searchPlaceholder", "Search messages")}
               />
             </div>
             <MultiSelect
@@ -662,22 +662,24 @@ export default function EmailInboxPage() {
                   addAttachmentType(attachmentTypeDraft);
                 }
               }}
-              placeholder={t("email.fileTypeFilter", "Dateityp")}
-              aria-label={t("email.fileTypeFilter", "Dateityp filtern")}
+              placeholder={t("email.fileTypeFilter", "File type")}
+              aria-label={t("email.fileTypeFilter", "Filter by file type")}
             />
             <TextInput
               className="email-type-custom-input"
               value={attachmentTypeDraft}
-              onChange={(event) => setAttachmentTypeDraft(event.currentTarget.value)}
+              onChange={(event) =>
+                setAttachmentTypeDraft(event.currentTarget.value)
+              }
               onKeyDown={(event) => {
                 if (event.key !== "Enter") return;
                 addAttachmentType(attachmentTypeDraft);
               }}
               placeholder={t(
                 "email.customFileType",
-                "Eigenen Dateityp eingeben und Enter drücken",
+                "Enter a custom file type and press Enter",
               )}
-              aria-label={t("email.customFileType", "Eigenen Dateityp")}
+              aria-label={t("email.customFileType", "Custom file type")}
             />
             <MultiSelect
               className="email-label-filter"
@@ -686,7 +688,7 @@ export default function EmailInboxPage() {
               value={selectedLabels}
               onChange={setSelectedLabels}
               placeholder={t("email.labelFilter", "Label")}
-              aria-label={t("email.labelFilter", "Nach Labels filtern")}
+              aria-label={t("email.labelFilter", "Filter by labels")}
               searchable
             />
           </div>
@@ -744,18 +746,22 @@ export default function EmailInboxPage() {
             ) : (
               <div className="email-no-results">
                 <SearchIcon />
-                <strong>
-                  {t("email.noResults", "Keine Nachrichten gefunden")}
-                </strong>
+                <strong>{t("email.noResults", "No messages found")}</strong>
                 <span>
-                  {t("email.noResultsHint", "Passe deinen Suchbegriff an.")}
+                  {t("email.noResultsHint", "Try a different search term.")}
                 </span>
               </div>
             )}
             {loadingMore && (
-              <div className="email-loading-more" role="status" aria-live="polite">
+              <div
+                className="email-loading-more"
+                role="status"
+                aria-live="polite"
+              >
                 <span className="email-loading-spinner" aria-hidden="true" />
-                <span>{t("email.loadingMore", "Weitere Nachrichten werden geladen ...")}</span>
+                <span>
+                  {t("email.loadingMore", "Loading more messages ...")}
+                </span>
               </div>
             )}
           </ScrollArea>
@@ -763,20 +769,20 @@ export default function EmailInboxPage() {
 
         <section
           className="email-detail-column"
-          aria-label={t("email.messageDetails", "Nachrichtendetails")}
+          aria-label={t("email.messageDetails", "Message details")}
         >
           {selectedMessage ? (
             <>
               <div className="email-detail-toolbar">
                 <span className="email-detail-label">
-                  {t("email.message", "Nachricht")}
+                  {t("email.message", "Message")}
                 </span>
                 <Menu shadow="md" width={220} position="bottom-end">
                   <Menu.Target>
-                    <Tooltip label={t("email.moreActions", "Weitere Aktionen")}>
+                    <Tooltip label={t("email.moreActions", "More actions")}>
                       <ActionIcon
                         variant="tertiary"
-                        aria-label={t("email.moreActions", "Weitere Aktionen")}
+                        aria-label={t("email.moreActions", "More actions")}
                       >
                         <MoreHorizIcon fontSize="small" />
                       </ActionIcon>
@@ -785,7 +791,9 @@ export default function EmailInboxPage() {
                   <Menu.Dropdown>
                     <Menu.Item
                       onClick={() =>
-                        void navigator.clipboard.writeText(selectedMessage.subject)
+                        void navigator.clipboard.writeText(
+                          selectedMessage.subject,
+                        )
                       }
                     >
                       {t("email.copySubject", "Betreff kopieren")}
@@ -801,7 +809,7 @@ export default function EmailInboxPage() {
                     </Menu.Item>
                     <Menu.Divider />
                     <Menu.Item onClick={refreshInbox}>
-                      {t("email.refresh", "Postfach aktualisieren")}
+                      {t("email.refresh", "Refresh inbox")}
                     </Menu.Item>
                   </Menu.Dropdown>
                 </Menu>
@@ -842,14 +850,14 @@ export default function EmailInboxPage() {
                   <p className="email-message-body-copy">
                     {t(
                       "email.demoBody",
-                      "Die angehängten Dateien können nach dem Download direkt in den Stirling-PDF-Arbeitsbereich übernommen werden.",
+                      "Attached files can be transferred directly into the Stirling PDF workspace after download.",
                     )}
                   </p>
 
                   {selectedAttachments && selectedAttachments.length > 0 && (
                     <div className="email-attachments">
                       <div className="email-section-label">
-                        <span>{t("email.attachments", "Anhänge")}</span>
+                        <span>{t("email.attachments", "Attachments")}</span>
                         <span>{selectedAttachments.length}</span>
                       </div>
                       {selectedAttachments.map((attachment) => (
@@ -871,12 +879,15 @@ export default function EmailInboxPage() {
                               <CloudDownloadOutlinedIcon fontSize="small" />
                             }
                             onClick={() =>
-                              void importAttachment(selectedMessage.id, attachment)
+                              void importAttachment(
+                                selectedMessage.id,
+                                attachment,
+                              )
                             }
                           >
                             {downloadedAttachment === attachment.id
                               ? t("email.queued", "Vorgemerkt")
-                              : t("email.download", "Importieren")}
+                              : t("email.download", "Import")}
                           </Button>
                         </div>
                       ))}
@@ -884,7 +895,7 @@ export default function EmailInboxPage() {
                         <EmailOutlinedIcon fontSize="inherit" />{" "}
                         {t(
                           "email.storageNote",
-                          "Anhänge werden im Datei-Workflow gespeichert, E-Mail-Daten bleiben im lokalen Cache.",
+                          "Attachments are stored in the file workflow; email data remains in the local cache.",
                         )}
                       </p>
                     </div>
@@ -895,12 +906,9 @@ export default function EmailInboxPage() {
           ) : (
             <div className="email-detail-empty">
               <EmailOutlinedIcon />
-              <strong>{t("email.selectMessage", "Nachricht auswählen")}</strong>
+              <strong>{t("email.selectMessage", "Select a message")}</strong>
               <span>
-                {t(
-                  "email.selectMessageHint",
-                  "Wähle eine E-Mail aus der Liste aus.",
-                )}
+                {t("email.selectMessageHint", "Choose an email from the list.")}
               </span>
             </div>
           )}
@@ -916,11 +924,11 @@ export default function EmailInboxPage() {
             <span className="email-page-eyebrow">
               {t("email.firstSetup", "Erster Schritt")}
             </span>
-            <h2>{t("email.connectTitle", "Postfach verbinden")}</h2>
+            <h2>{t("email.connectTitle", "Connect mailbox")}</h2>
             <p>
               {t(
                 "email.connectDescription",
-                "Verbinde dein E-Mail-Konto, um Anhänge sicher in deinen PDF-Workflow zu übernehmen.",
+                "Connect your email account to securely transfer attachments into your PDF workflow.",
               )}
             </p>
             <div className="email-provider-actions">
@@ -936,7 +944,7 @@ export default function EmailInboxPage() {
             <small>
               {t(
                 "email.oauthNote",
-                "Die Anmeldung erfolgt über OAuth. Passwörter werden nicht in Stirling gespeichert.",
+                "Sign-in uses OAuth. Passwords are not stored by Stirling.",
               )}
             </small>
           </div>
@@ -946,14 +954,14 @@ export default function EmailInboxPage() {
       <Modal
         opened={settingsOpen}
         onClose={() => setSettingsOpen(false)}
-        title={t("email.settings", "E-Mail-Einstellungen")}
+        title={t("email.settings", "Email settings")}
         centered
       >
         <TextInput
           label={t("email.displayName", "Anzeigename")}
           description={t(
             "email.displayNameHint",
-            "Dieser Name wird statt der E-Mail-Adresse im Postfach angezeigt.",
+            "This name is displayed instead of the email address in the mailbox.",
           )}
           value={draftDisplayName}
           onChange={(event) => setDraftDisplayName(event.currentTarget.value)}
@@ -968,16 +976,14 @@ export default function EmailInboxPage() {
             onClick={() => void disconnectAccount()}
             className="email-disconnect-button"
           >
-            Gmail-Verbindung trennen
+            Disconnect Gmail
           </Button>
         )}
         <div className="email-settings-actions">
           <Button variant="secondary" onClick={() => setSettingsOpen(false)}>
             {t("email.cancel", "Abbrechen")}
           </Button>
-          <Button onClick={saveSettings}>
-            {t("email.save", "Speichern")}
-          </Button>
+          <Button onClick={saveSettings}>{t("email.save", "Speichern")}</Button>
         </div>
       </Modal>
     </main>

frontend/editor/src/desktop/constants/emailMailboxAvailability.ts

@@ -0,0 +1,2 @@
+// Email mailbox support is intentionally disabled for the Tauri desktop build.
+export const EMAIL_MAILBOX_ENABLED = false;

frontend/editor/src/proprietary/App.tsx

@@ -21,6 +21,7 @@ import { WATCHED_FOLDERS_ENABLED } from "@app/constants/featureFlags";
 import { getAdminRouteExtensions } from "@app/routes/adminRouteExtensions";
 import { RootGate } from "@app/routes/RootGate";
 import { RequireAuth } from "@app/auth/guards/RequireAuth";
+import { EMAIL_MAILBOX_ENABLED } from "@app/constants/emailMailboxAvailability";
 
 // Import global styles
 import "@app/styles/tailwind.css";
@@ -106,17 +107,21 @@ export default function App() {
                     <Route path="/auth/callback" element={<AuthCallback />} />
                     <Route path="/invite/:token" element={<InviteAccept />} />
                     <Route path="/share/:token" element={<ShareLinkPage />} />
-                    <Route
-                      path="/mail"
-                      element={
-                        <RequireAuth
-                          loading={<LoadingFallback />}
-                          fallback={<Navigate to="/login?from=%2Fmail" replace />}
-                        >
-                          <EmailInboxPage />
-                        </RequireAuth>
-                      }
-                    />
+                    {EMAIL_MAILBOX_ENABLED && (
+                      <Route
+                        path="/mail"
+                        element={
+                          <RequireAuth
+                            loading={<LoadingFallback />}
+                            fallback={
+                              <Navigate to="/login?from=%2Fmail" replace />
+                            }
+                          >
+                            <EmailInboxPage />
+                          </RequireAuth>
+                        }
+                      />
+                    )}
                     {/* The editor and its tool routes - Landing handles auth logic */}
                     <Route path="/*" element={<Landing />} />
                   </Routes>

frontend/editor/src/proprietary/components/shared/config/configSections/AdminMailboxSection.tsx

@@ -1,13 +1,6 @@
 import { useCallback, useEffect } from "react";
 import { useTranslation } from "react-i18next";
-import {
-  Stack,
-  Paper,
-  Text,
-  TextInput,
-  Loader,
-  Group,
-} from "@mantine/core";
+import { Stack, Paper, Text, TextInput, Loader, Group } from "@mantine/core";
 import { alert } from "@app/components/toast";
 import RestartConfirmationModal from "@app/components/shared/config/RestartConfirmationModal";
 import { useRestartServer } from "@app/components/shared/config/useRestartServer";