diff --git a/app/(main)/[locale]/page.tsx b/app/(main)/[locale]/page.tsx
index 67699187..04d8b8b9 100644
--- a/app/(main)/[locale]/page.tsx
+++ b/app/(main)/[locale]/page.tsx
@@ -621,6 +621,10 @@ export default function Home() {
     onToggleSpam: async () => {
       if (isScheduledView) return;
       const currentMailbox = mailboxes.find(m => m.id === selectedMailbox);
+      // Marking your own outgoing mail as spam makes no sense - the toolbar
+      // and menus hide the action in Sent/Drafts/Scheduled, so the shortcut
+      // is a no-op there too.
+      if (['sent', 'drafts', 'scheduled'].includes(currentMailbox?.role || '')) return;
       const isInJunk = currentMailbox?.role === 'junk';
       if (selectedEmailIds.size > 0 && client) {
         const ids = Array.from(selectedEmailIds);
@@ -1648,6 +1652,45 @@ export default function Home() {
     }
   };
 
+  const handleTogglePinned = async (emailToPin: Email) => {
+    if (!client) return;
+
+    try {
+      const email = emails.find(e => e.id === emailToPin.id) ?? emailToPin;
+      const isPinned = email.keywords?.['$pinned'] === true;
+      // JMAP keywords are a set of present keys - drop the key to unpin
+      // rather than writing a false value.
+      const keywords = { ...email.keywords };
+      if (isPinned) {
+        delete keywords['$pinned'];
+      } else {
+        keywords['$pinned'] = true;
+      }
+
+      // Same unified-view routing as color tags: write to the email's own
+      // account via the login it is reachable through. (#281)
+      const pinClientId = isUnifiedView ? email.sourceClientAccountId : undefined;
+      const pinAccountId = isUnifiedView ? email.sourceAccountId : undefined;
+      const pinClient = pinClientId
+        ? (useAuthStore.getState().getClientForAccount(pinClientId) ?? client)
+        : client;
+
+      await pinClient.updateEmailKeywords(email.id, keywords, pinAccountId);
+
+      // Patch in place so the icon flips immediately, then refetch the first
+      // page so the mail floats/sinks per the server's pinned-first sort.
+      // Skip the refetch where that sort does not apply (unified views) or
+      // where it would replace a tag-filtered list (refreshCurrentMailbox
+      // fetches by folder only).
+      setEmailKeywordsLocal(email.id, keywords);
+      if (!isUnifiedView && !useEmailStore.getState().selectedKeyword) {
+        void refreshCurrentMailbox(client);
+      }
+    } catch (error) {
+      console.error("Failed to toggle pin:", error);
+    }
+  };
+
   const handleSetColorTag = async (emailId: string, color: string | null) => {
     if (!client) return;
 
@@ -3038,6 +3081,9 @@ export default function Home() {
                     await toggleStar(client, email.id);
                   }
                 }}
+                onTogglePinned={async (email) => {
+                  await handleTogglePinned(email);
+                }}
                 onDelete={async (email) => {
                   await handleDelete(email);
                 }}
diff --git a/app/api/auth/token/route.ts b/app/api/auth/token/route.ts
index e734ba71..16768956 100644
--- a/app/api/auth/token/route.ts
+++ b/app/api/auth/token/route.ts
@@ -82,9 +82,16 @@ export async function PUT(request: NextRequest) {
     if (!tokenResponse.ok) {
       const errorText = await tokenResponse.text();
       logger.error('Token refresh failed', { status: tokenResponse.status, error: errorText });
-      cookieStore.delete(cookieName);
-      cookieStore.delete(refreshTokenServerCookieName(slot));
-      return NextResponse.json({ error: 'Refresh failed' }, { status: 401 });
+      // Drop the refresh token only when the server definitively rejected it
+      // (invalid/expired/revoked grant). A 5xx or 429 is an outage - keeping
+      // the cookie lets the session resume once the server is back.
+      const status = tokenResponse.status;
+      if (status === 400 || status === 401 || status === 403) {
+        cookieStore.delete(cookieName);
+        cookieStore.delete(refreshTokenServerCookieName(slot));
+        return NextResponse.json({ error: 'Refresh failed' }, { status: 401 });
+      }
+      return NextResponse.json({ error: 'Token endpoint unavailable' }, { status: 503 });
     }
 
     const tokens = await tokenResponse.json();
diff --git a/components/email/email-context-menu.tsx b/components/email/email-context-menu.tsx
index 83a4b4de..9a66f9b6 100644
--- a/components/email/email-context-menu.tsx
+++ b/components/email/email-context-menu.tsx
@@ -17,6 +17,8 @@ import {
   Mail,
   MailOpen,
   Star,
+  Pin,
+  PinOff,
   Trash2,
   Archive,
   FolderInput,
@@ -59,6 +61,7 @@ interface EmailContextMenuProps {
   onForward?: () => void;
   onMarkAsRead?: (read: boolean) => void;
   onToggleStar?: () => void;
+  onTogglePinned?: () => void;
   onDelete?: () => void;
   onArchive?: () => void;
   onSetColorTag?: (color: string | null) => void;
@@ -126,6 +129,7 @@ export function EmailContextMenu({
   onForward,
   onMarkAsRead,
   onToggleStar,
+  onTogglePinned,
   onDelete,
   onArchive,
   onSetColorTag,
@@ -149,10 +153,14 @@ export function EmailContextMenu({
   const emailKeywords = useSettingsStore((state) => state.emailKeywords);
   const isUnread = !email.keywords?.$seen;
   const isStarred = email.keywords?.$flagged;
+  const isPinned = email.keywords?.['$pinned'] === true;
   const isDraft = email.keywords?.['$draft'] === true;
   const currentColors = getCurrentColors(email.keywords);
   const showBatchActions = isMultiSelect && selectedCount > 1;
   const isInJunkFolder = currentMailboxRole === 'junk';
+  // Marking your own outgoing mail as spam makes no sense - hide the action
+  // in Sent, Drafts and Scheduled.
+  const spamApplicable = !['sent', 'drafts', 'scheduled'].includes(currentMailboxRole || '');
   const isScheduled = email.isScheduled === true;
   const canCancelScheduled = isScheduled && email.scheduledUndoStatus === 'pending';
 
@@ -349,6 +357,15 @@ export function EmailContextMenu({
         />
       )}
 
+      {/* Pin/Unpin - only for single email; pinned mails float to the top of the list */}
+      {!showBatchActions && onTogglePinned && (
+        <ContextMenuItem
+          icon={isPinned ? PinOff : Pin}
+          label={isPinned ? t("unpin") : t("pin")}
+          onClick={() => handleAction(onTogglePinned)}
+        />
+      )}
+
       {/* Set tag submenu - only for single email */}
       {!showBatchActions && (
         <ContextMenuSubMenu icon={Tag} label={t("color_tag")}>
@@ -385,22 +402,26 @@ export function EmailContextMenu({
         </ContextMenuSubMenu>
       )}
 
-      <ContextMenuSeparator />
+      {/* Spam - contextual based on folder; pointless on own outgoing mail */}
+      {spamApplicable && (
+        <>
+          <ContextMenuSeparator />
 
-      {/* Spam - contextual based on folder */}
-      <ContextMenuItem
-        icon={isInJunkFolder ? ShieldCheck : ShieldAlert}
-        label={isInJunkFolder ? t("not_spam") : t("mark_as_spam")}
-        onClick={() =>
-          handleAction(
-            showBatchActions
-              ? (isInJunkFolder ? onBatchUndoSpam! : onBatchMarkAsSpam!)
-              : (isInJunkFolder ? onUndoSpam! : onMarkAsSpam!)
-          )
-        }
-        disabled={showBatchActions ? (isInJunkFolder ? !onBatchUndoSpam : !onBatchMarkAsSpam) : (isInJunkFolder ? !onUndoSpam : !onMarkAsSpam)}
-        destructive={!isInJunkFolder}
-      />
+          <ContextMenuItem
+            icon={isInJunkFolder ? ShieldCheck : ShieldAlert}
+            label={isInJunkFolder ? t("not_spam") : t("mark_as_spam")}
+            onClick={() =>
+              handleAction(
+                showBatchActions
+                  ? (isInJunkFolder ? onBatchUndoSpam! : onBatchMarkAsSpam!)
+                  : (isInJunkFolder ? onUndoSpam! : onMarkAsSpam!)
+              )
+            }
+            disabled={showBatchActions ? (isInJunkFolder ? !onBatchUndoSpam : !onBatchMarkAsSpam) : (isInJunkFolder ? !onUndoSpam : !onMarkAsSpam)}
+            destructive={!isInJunkFolder}
+          />
+        </>
+      )}
 
       <ContextMenuSeparator />
 
diff --git a/components/email/email-hover-actions.tsx b/components/email/email-hover-actions.tsx
index 4e465fe7..7bb4a734 100644
--- a/components/email/email-hover-actions.tsx
+++ b/components/email/email-hover-actions.tsx
@@ -21,6 +21,8 @@ interface EmailHoverActionsProps {
   // the spam quick-action flips to "not spam".
   isInJunk?: boolean;
   onUndoSpam?: () => void;
+  // Hidden where marking spam is meaningless for self-authored mail (Drafts, Sent).
+  spamApplicable?: boolean;
 }
 
 const ACTION_CONFIG: Record<HoverAction, {
@@ -78,6 +80,7 @@ export function EmailHoverActions({
   onMarkAsSpam,
   isInJunk = false,
   onUndoSpam,
+  spamApplicable = true,
 }: EmailHoverActionsProps) {
   const hoverActions = useSettingsStore((state) => state.hoverActions);
   const hoverActionsMode = useSettingsStore((state) => state.hoverActionsMode);
@@ -121,6 +124,7 @@ export function EmailHoverActions({
   const actionButtons = hoverActions.map((actionId) => {
     const config = ACTION_CONFIG[actionId];
     if (!config) return null;
+    if (actionId === "spam" && !spamApplicable) return null;
     const Icon = config.icon;
 
     // In a junk context the spam action becomes "not spam".
diff --git a/components/email/email-list-item.tsx b/components/email/email-list-item.tsx
index 27fb5c64..b29819fe 100644
--- a/components/email/email-list-item.tsx
+++ b/components/email/email-list-item.tsx
@@ -6,7 +6,7 @@ import { formatDate, stripInvisibleLeading } from "@/lib/utils";
 import { Email } from "@/lib/jmap/types";
 import { cn } from "@/lib/utils";
 import { SelectableAvatar } from "@/components/email/selectable-avatar";
-import { Paperclip, Star, Circle, CheckSquare, Square, Reply, Forward } from "lucide-react";
+import { Paperclip, Star, Pin, Circle, CheckSquare, Square, Reply, Forward } from "lucide-react";
 import { useEmailStore } from "@/stores/email-store";
 import { useSettingsStore, KEYWORD_PALETTE } from "@/stores/settings-store";
 import { useAuthStore } from "@/stores/auth-store";
@@ -45,6 +45,7 @@ export function EmailListItem({ email, selected, onClick, onDoubleClick, onConte
   const isChecked = selectedEmailIds.has(email.id);
   const isUnread = !email.keywords?.$seen;
   const isStarred = email.keywords?.$flagged;
+  const isPinned = email.keywords?.['$pinned'] === true;
   const isImportant = email.keywords?.["$important"];
   const isAnswered = email.keywords?.$answered;
   const isForwarded = email.keywords?.$forwarded;
@@ -217,6 +218,7 @@ export function EmailListItem({ email, selected, onClick, onDoubleClick, onConte
                 </div>
               </div>
               <div className="flex items-center gap-2.5 shrink-0">
+                {isPinned && <Pin className="w-3.5 h-3.5 text-primary" />}
                 {isStarred && <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />}
                 {isImportant && <span className="h-2 w-2 rounded-full bg-warning" />}
                 {isAnswered && !isForwarded && <Reply className="w-3.5 h-3.5 text-muted-foreground" />}
@@ -253,6 +255,9 @@ export function EmailListItem({ email, selected, onClick, onDoubleClick, onConte
                     {sender?.name || sender?.email || "Unknown"}
                   </span>
                   <div className="flex items-center gap-1.5">
+                    {isPinned && (
+                      <Pin className="w-3.5 h-3.5 text-primary" />
+                    )}
                     {isStarred && (
                       <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />
                     )}
@@ -338,6 +343,7 @@ export function EmailListItem({ email, selected, onClick, onDoubleClick, onConte
         onMarkAsSpam={onMarkAsSpam}
         onUndoSpam={onUndoSpam}
         isInJunk={currentMailboxRole === 'junk'}
+        spamApplicable={!['sent', 'drafts', 'scheduled'].includes(currentMailboxRole || '')}
       />
     </div>
   );
diff --git a/components/email/email-list.tsx b/components/email/email-list.tsx
index 9c3ec0c7..cab95c82 100644
--- a/components/email/email-list.tsx
+++ b/components/email/email-list.tsx
@@ -35,6 +35,7 @@ interface EmailListProps {
   onForward?: (email: Email) => void;
   onMarkAsRead?: (email: Email, read: boolean) => void;
   onToggleStar?: (email: Email) => void;
+  onTogglePinned?: (email: Email) => void;
   onDelete?: (email: Email) => void;
   onArchive?: (email: Email) => void;
   onSetColorTag?: (emailId: string, color: string | null) => void;
@@ -64,6 +65,7 @@ export function EmailList({
   onForward,
   onMarkAsRead,
   onToggleStar,
+  onTogglePinned,
   onDelete,
   onArchive,
   onSetColorTag,
@@ -551,6 +553,7 @@ export function EmailList({
           onForward={() => onForward?.(contextMenu.data!)}
           onMarkAsRead={(read) => onMarkAsRead?.(contextMenu.data!, read)}
           onToggleStar={() => onToggleStar?.(contextMenu.data!)}
+          onTogglePinned={onTogglePinned ? () => onTogglePinned(contextMenu.data!) : undefined}
           onDelete={() => onDelete?.(contextMenu.data!)}
           onArchive={() => onArchive?.(contextMenu.data!)}
           onSetColorTag={(color) => onSetColorTag?.(contextMenu.data!.id, color)}
diff --git a/components/email/email-viewer.tsx b/components/email/email-viewer.tsx
index ccc7b778..76ec3c50 100644
--- a/components/email/email-viewer.tsx
+++ b/components/email/email-viewer.tsx
@@ -693,6 +693,9 @@ export function EmailViewer({
 
   // Detect if current mailbox is Junk folder
   const isInJunkFolder = currentMailboxRole === 'junk';
+  // Marking your own outgoing mail as spam makes no sense - hide the action
+  // in Sent, Drafts and Scheduled.
+  const spamApplicable = !['sent', 'drafts', 'scheduled'].includes(currentMailboxRole || '');
 
   // Detect if the email is a draft
   const isDraft = email?.keywords?.['$draft'] === true;
@@ -2172,6 +2175,26 @@ export function EmailViewer({
         lastBodyHeightRef.current = initialHeight;
         setIframeReady(true);
 
+        // Hide images that fail to load (dead/mixed-content/unreachable external
+        // URLs) rather than leaving the browser's broken-image placeholder and
+        // alt text, which read as stray label text in an otherwise image-only
+        // email (e.g. a blocked "logo" alt). Blocked images already carry a 1x1
+        // transparent pixel (naturalWidth 1) and display:none, so they're skipped.
+        const hideIfBroken = (img: HTMLImageElement) => {
+          if (img.complete && img.naturalWidth === 0 && img.getAttribute('src')) {
+            img.style.display = 'none';
+          }
+        };
+        doc.querySelectorAll('img').forEach((el) => {
+          const img = el as HTMLImageElement;
+          if (img.complete) {
+            hideIfBroken(img);
+          } else {
+            img.addEventListener('error', () => { img.style.display = 'none'; }, { once: true });
+            img.addEventListener('load', () => hideIfBroken(img), { once: true });
+          }
+        });
+
         // Make links open in new tab
         doc.querySelectorAll('a').forEach(a => {
           a.setAttribute('target', '_blank');
@@ -2902,7 +2925,7 @@ export function EmailViewer({
         </div>
 
         {/* Spam */}
-        {(onMarkAsSpam || onUndoSpam) && (
+        {spamApplicable && (onMarkAsSpam || onUndoSpam) && (
           <Button
             variant="ghost"
             size="sm"
@@ -3136,7 +3159,7 @@ export function EmailViewer({
                 </div>
               )}
               {/* Overflow: spam */}
-              {(onMarkAsSpam || onUndoSpam) && (
+              {spamApplicable && (onMarkAsSpam || onUndoSpam) && (
                 <button
                   onClick={() => { (isInJunkFolder ? onUndoSpam : onMarkAsSpam)?.(); setMoreMenuOpen(false); setMoreMenuSub(null); }}
                   className={cn("w-full px-3 py-1.5 text-sm text-left hover:bg-muted text-foreground flex items-center gap-2", hiddenPriorities.has(7) ? "" : "sm:hidden")}
diff --git a/components/email/thread-list-item.tsx b/components/email/thread-list-item.tsx
index b6cf70bc..69039503 100644
--- a/components/email/thread-list-item.tsx
+++ b/components/email/thread-list-item.tsx
@@ -5,7 +5,7 @@ import { formatDate, formatDateTime, stripInvisibleLeading } from "@/lib/utils";
 import { Email, ThreadGroup, ALL_MAIL_MAILBOX_ID } from "@/lib/jmap/types";
 import { cn } from "@/lib/utils";
 import { SelectableAvatar } from "@/components/email/selectable-avatar";
-import { Paperclip, Star, Circle, ChevronRight, ChevronDown, Loader2, MessageSquare, CheckSquare, Square, Reply, Forward, CalendarClock, Folder } from "lucide-react";
+import { Paperclip, Star, Pin, Circle, ChevronRight, ChevronDown, Loader2, MessageSquare, CheckSquare, Square, Reply, Forward, CalendarClock, Folder } from "lucide-react";
 import { useSettingsStore, KEYWORD_PALETTE } from "@/stores/settings-store";
 import { useUIStore } from "@/stores/ui-store";
 import { useEmailStore } from "@/stores/email-store";
@@ -78,6 +78,7 @@ const SingleEmailItem = React.forwardRef<HTMLDivElement, SingleEmailItemProps>(
     const tBatch = useTranslations('email_list.batch_actions');
     const isUnread = !email.keywords?.$seen;
     const isStarred = email.keywords?.$flagged;
+    const isPinned = email.keywords?.['$pinned'] === true;
     const isAnswered = email.keywords?.$answered;
     const isForwarded = email.keywords?.$forwarded;
     const { selectedMailbox, mailboxes, selectedEmailIds, toggleEmailSelection, selectRangeEmails, clearSelection, isUnifiedView, unifiedRole } = useEmailStore();
@@ -264,6 +265,7 @@ const SingleEmailItem = React.forwardRef<HTMLDivElement, SingleEmailItemProps>(
                   </div>
                 </div>
                 <div className="flex items-center gap-2.5 shrink-0">
+                  {isPinned && <Pin className="w-3.5 h-3.5 text-primary" />}
                   {isStarred && <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />}
                   {isAnswered && !isForwarded && <Reply className="w-3.5 h-3.5 text-muted-foreground" />}
                   {isForwarded && !isAnswered && <Forward className="w-3.5 h-3.5 text-muted-foreground" />}
@@ -316,6 +318,9 @@ const SingleEmailItem = React.forwardRef<HTMLDivElement, SingleEmailItemProps>(
                       {sender?.name || sender?.email || "Unknown"}
                     </span>
                     <div className="flex items-center gap-1.5">
+                      {isPinned && (
+                        <Pin className="w-3.5 h-3.5 text-primary" />
+                      )}
                       {isStarred && (
                         <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />
                       )}
@@ -405,6 +410,7 @@ const SingleEmailItem = React.forwardRef<HTMLDivElement, SingleEmailItemProps>(
             onMarkAsSpam={onMarkAsSpam}
             onUndoSpam={onUndoSpam}
             isInJunk={currentMailboxRole === 'junk'}
+            spamApplicable={!['sent', 'drafts', 'scheduled'].includes(currentMailboxRole || '')}
           />
         )}
       </div>
@@ -442,7 +448,7 @@ export const ThreadListItem = React.forwardRef<HTMLDivElement, ThreadListItemPro
     const timeFormat = useSettingsStore((state) => state.timeFormat);
     const showAvatarsInJunk = useSettingsStore((state) => state.showAvatarsInJunk);
     const isMobile = useUIStore((state) => state.isMobile);
-    const { latestEmail, participantNames, hasUnread, hasStarred, hasAttachment, hasAnswered, hasForwarded, emailCount } = thread;
+    const { latestEmail, participantNames, hasUnread, hasStarred, hasPinned, hasAttachment, hasAnswered, hasForwarded, emailCount } = thread;
     // The horizontal one-line "focus" layout doesn't fit on narrow screens; fall back to multi-line on mobile.
     const isFocusedMailLayout = mailLayout === 'focus' && !isMobile;
     const trimmedPreview = stripInvisibleLeading(latestEmail.preview ?? '');
@@ -722,6 +728,7 @@ export const ThreadListItem = React.forwardRef<HTMLDivElement, ThreadListItemPro
                     </div>
                   </div>
                   <div className="flex items-center gap-2.5 shrink-0">
+                    {hasPinned && <Pin className="w-3.5 h-3.5 text-primary" />}
                     {hasStarred && <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />}
                     {hasAnswered && !hasForwarded && <Reply className="w-3.5 h-3.5 text-muted-foreground" />}
                     {hasForwarded && !hasAnswered && <Forward className="w-3.5 h-3.5 text-muted-foreground" />}
@@ -786,6 +793,9 @@ export const ThreadListItem = React.forwardRef<HTMLDivElement, ThreadListItemPro
                         {emailCount}
                       </span>
                       <div className="flex items-center gap-1.5">
+                        {hasPinned && (
+                          <Pin className="w-3.5 h-3.5 text-primary" />
+                        )}
                         {hasStarred && (
                           <Star className="w-3.5 h-3.5 fill-amber-400 text-amber-400" />
                         )}
@@ -875,6 +885,7 @@ export const ThreadListItem = React.forwardRef<HTMLDivElement, ThreadListItemPro
               onMarkAsSpam={onMarkAsSpam ? () => onMarkAsSpam(latestEmail) : undefined}
               onUndoSpam={onUndoSpam ? () => onUndoSpam(latestEmail) : undefined}
               isInJunk={currentMailboxRole === 'junk'}
+              spamApplicable={!['sent', 'drafts', 'scheduled'].includes(currentMailboxRole || '')}
             />
           )}
         </div>
diff --git a/lib/__tests__/thread-utils.test.ts b/lib/__tests__/thread-utils.test.ts
index bde3a6b5..62cf41a2 100644
--- a/lib/__tests__/thread-utils.test.ts
+++ b/lib/__tests__/thread-utils.test.ts
@@ -116,37 +116,47 @@ describe('groupEmailsByThread', () => {
 });
 
 describe('sortThreadGroups', () => {
+  const makeGroup = (threadId: string, receivedAt: string, hasPinned = false): ThreadGroup => ({
+    threadId,
+    emails: [makeEmail({ receivedAt })],
+    latestEmail: makeEmail({ receivedAt }),
+    participantNames: ['A'],
+    hasUnread: false,
+    hasStarred: false,
+    hasPinned,
+    hasAttachment: false,
+    hasAnswered: false,
+    hasForwarded: false,
+    emailCount: 1,
+  });
+
   it('sorts groups by latestEmail.receivedAt descending', () => {
-    const groups: ThreadGroup[] = [
-      {
-        threadId: 'old',
-        emails: [makeEmail({ receivedAt: '2024-01-01T00:00:00Z' })],
-        latestEmail: makeEmail({ receivedAt: '2024-01-01T00:00:00Z' }),
-        participantNames: ['A'],
-        hasUnread: false,
-        hasStarred: false,
-        hasAttachment: false,
-        hasAnswered: false,
-        hasForwarded: false,
-        emailCount: 1,
-      },
-      {
-        threadId: 'new',
-        emails: [makeEmail({ receivedAt: '2024-06-01T00:00:00Z' })],
-        latestEmail: makeEmail({ receivedAt: '2024-06-01T00:00:00Z' }),
-        participantNames: ['B'],
-        hasUnread: false,
-        hasStarred: false,
-        hasAttachment: false,
-        hasAnswered: false,
-        hasForwarded: false,
-        emailCount: 1,
-      },
+    const groups = [
+      makeGroup('old', '2024-01-01T00:00:00Z'),
+      makeGroup('new', '2024-06-01T00:00:00Z'),
     ];
     const sorted = sortThreadGroups(groups);
     expect(sorted[0].threadId).toBe('new');
     expect(sorted[1].threadId).toBe('old');
   });
+
+  it('keeps pinned threads on top regardless of date', () => {
+    const groups = [
+      makeGroup('newest', '2024-06-01T00:00:00Z'),
+      makeGroup('old-pinned', '2024-01-01T00:00:00Z', true),
+      makeGroup('mid', '2024-03-01T00:00:00Z'),
+    ];
+    const sorted = sortThreadGroups(groups);
+    expect(sorted.map(g => g.threadId)).toEqual(['old-pinned', 'newest', 'mid']);
+  });
+
+  it('detects hasPinned from the $pinned keyword', () => {
+    const emails = [
+      makeEmail({ id: 'e1', keywords: { $seen: true } }),
+      makeEmail({ id: 'e2', keywords: { $seen: true, '$pinned': true } }),
+    ];
+    expect(groupEmailsByThread(emails)[0].hasPinned).toBe(true);
+  });
 });
 
 describe('getThreadParticipants', () => {
@@ -188,6 +198,7 @@ describe('mergeThreadEmails', () => {
       participantNames: ['Alice'],
       hasUnread: false,
       hasStarred: false,
+      hasPinned: false,
       hasAttachment: false,
       hasAnswered: false,
       hasForwarded: false,
@@ -210,6 +221,7 @@ describe('mergeThreadEmails', () => {
       participantNames: ['Alice'],
       hasUnread: false,
       hasStarred: false,
+      hasPinned: false,
       hasAttachment: false,
       hasAnswered: false,
       hasForwarded: false,
diff --git a/lib/demo/demo-client.ts b/lib/demo/demo-client.ts
index df425485..4e94555e 100644
--- a/lib/demo/demo-client.ts
+++ b/lib/demo/demo-client.ts
@@ -151,12 +151,16 @@ export class DemoJMAPClient implements IJMAPClient {
 
   // ── Emails ────────────────────────────────────────────────────
 
-  async getEmails(mailboxId?: string, _accountId?: string, limit: number = 50, position: number = 0): Promise<{ emails: Email[]; hasMore: boolean; total: number }> {
+  async getEmails(mailboxId?: string, _accountId?: string, limit: number = 50, position: number = 0, _hasKeyword?: string, pinnedFirst?: boolean): Promise<{ emails: Email[]; hasMore: boolean; total: number }> {
     let filtered = this.data.emails;
     if (mailboxId) {
       filtered = filtered.filter(e => e.mailboxIds[mailboxId]);
     }
-    filtered.sort((a, b) => new Date(b.receivedAt).getTime() - new Date(a.receivedAt).getTime());
+    const pinRank = (e: Email) => (pinnedFirst && e.keywords?.['$pinned'] ? 1 : 0);
+    filtered.sort((a, b) =>
+      pinRank(b) - pinRank(a) ||
+      new Date(b.receivedAt).getTime() - new Date(a.receivedAt).getTime()
+    );
     const total = filtered.length;
     const emails = filtered.slice(position, position + limit);
     return { emails, hasMore: position + limit < total, total };
diff --git a/lib/jmap/client-interface.ts b/lib/jmap/client-interface.ts
index bb4ad31c..68c4ce1a 100644
--- a/lib/jmap/client-interface.ts
+++ b/lib/jmap/client-interface.ts
@@ -78,7 +78,9 @@ export interface IJMAPClient {
   deleteMailbox(mailboxId: string): Promise<void>;
 
   // ── Emails ────────────────────────────────────────────────────
-  getEmails(mailboxId?: string, accountId?: string, limit?: number, position?: number, hasKeyword?: string): Promise<{ emails: Email[]; hasMore: boolean; total: number }>;
+  // `pinnedFirst` sorts emails carrying the $pinned keyword to the top
+  // (server-side hasKeyword sort comparator, RFC 8621), then receivedAt desc.
+  getEmails(mailboxId?: string, accountId?: string, limit?: number, position?: number, hasKeyword?: string, pinnedFirst?: boolean): Promise<{ emails: Email[]; hasMore: boolean; total: number }>;
   getEmailsInMailbox(mailboxId: string): Promise<Email[]>;
   getEmail(emailId: string, accountId?: string): Promise<Email | null>;
   getTagCounts(tagIds: string[]): Promise<Record<string, { total: number; unread: number }>>;
diff --git a/lib/jmap/client.ts b/lib/jmap/client.ts
index c4c37439..39e9110b 100644
--- a/lib/jmap/client.ts
+++ b/lib/jmap/client.ts
@@ -1062,7 +1062,7 @@ export class JMAPClient implements IJMAPClient {
     }
   }
 
-  async getEmails(mailboxId?: string, accountId?: string, limit: number = 50, position: number = 0, hasKeyword?: string): Promise<{ emails: Email[], hasMore: boolean, total: number }> {
+  async getEmails(mailboxId?: string, accountId?: string, limit: number = 50, position: number = 0, hasKeyword?: string, pinnedFirst?: boolean): Promise<{ emails: Email[], hasMore: boolean, total: number }> {
     try {
       const targetAccountId = accountId || this.accountId;
       const filter: { inMailbox?: string; hasKeyword?: string } = {};
@@ -1072,12 +1072,20 @@ export class JMAPClient implements IJMAPClient {
       if (hasKeyword) {
         filter.hasKeyword = hasKeyword;
       }
+      // Pinned-first uses the hasKeyword sort comparator (RFC 8621 §4.4.2);
+      // every page of a view must use the same sort or pagination tears.
+      const sort = pinnedFirst
+        ? [
+            { property: "hasKeyword", keyword: "$pinned", isAscending: false },
+            { property: "receivedAt", isAscending: false },
+          ]
+        : [{ property: "receivedAt", isAscending: false }];
 
       const response = await this.request([
         ["Email/query", {
           accountId: targetAccountId,
           filter,
-          sort: [{ property: "receivedAt", isAscending: false }],
+          sort,
           limit,
           position,
           calculateTotal: true,
@@ -1096,7 +1104,10 @@ export class JMAPClient implements IJMAPClient {
         const emails = (getResponse.list || []) as Email[];
         // Sort client-side as safety net - some servers may not honour
         // the query sort for large mailboxes without additional filters.
+        // Must mirror the query sort, or it would undo the pinned-first order.
+        const pinRank = (e: Email) => (pinnedFirst && e.keywords?.['$pinned'] ? 1 : 0);
         emails.sort((a: Email, b: Email) =>
+          pinRank(b) - pinRank(a) ||
           new Date(b.receivedAt).getTime() - new Date(a.receivedAt).getTime()
         );
         const total = queryResponse?.total || 0;
diff --git a/lib/jmap/types.ts b/lib/jmap/types.ts
index c57f80d3..fe5ca45c 100644
--- a/lib/jmap/types.ts
+++ b/lib/jmap/types.ts
@@ -217,6 +217,7 @@ export interface ThreadGroup {
   participantNames: string[];// Unique participant names
   hasUnread: boolean;        // Any unread emails in thread
   hasStarred: boolean;       // Any starred emails in thread
+  hasPinned: boolean;        // Any pinned emails in thread ($pinned keyword)
   hasAttachment: boolean;    // Any email has attachment
   hasAnswered: boolean;      // Any email has been replied to
   hasForwarded: boolean;     // Any email has been forwarded
diff --git a/lib/thread-utils.ts b/lib/thread-utils.ts
index 45ced51d..41037492 100644
--- a/lib/thread-utils.ts
+++ b/lib/thread-utils.ts
@@ -44,9 +44,10 @@ export function groupEmailsByThread(
     // Collect unique participant names from all emails in thread
     const participantNames = getThreadParticipants(sortedEmails);
 
-    // Check for unread, starred, and attachments
+    // Check for unread, starred, pinned, and attachments
     const hasUnread = sortedEmails.some(e => !e.keywords?.$seen);
     const hasStarred = sortedEmails.some(e => e.keywords?.$flagged);
+    const hasPinned = sortedEmails.some(e => e.keywords?.['$pinned']);
     const hasAttachment = sortedEmails.some(e => e.hasAttachment);
     const hasAnswered = sortedEmails.some(e => e.keywords?.$answered);
     const hasForwarded = sortedEmails.some(e => e.keywords?.$forwarded);
@@ -58,6 +59,7 @@ export function groupEmailsByThread(
       participantNames,
       hasUnread,
       hasStarred,
+      hasPinned,
       hasAttachment,
       hasAnswered,
       hasForwarded,
@@ -70,10 +72,14 @@ export function groupEmailsByThread(
 
 /**
  * Sorts thread groups by their latest email's receivedAt date (newest first).
+ * Threads containing a pinned email ($pinned keyword) stay on top, mirroring
+ * the server-side pinned-first sort of the email list.
  */
 export function sortThreadGroups(groups: ThreadGroup[]): ThreadGroup[] {
   return [...groups].sort(
-    (a, b) => new Date(b.latestEmail.receivedAt).getTime() - new Date(a.latestEmail.receivedAt).getTime()
+    (a, b) =>
+      (b.hasPinned ? 1 : 0) - (a.hasPinned ? 1 : 0) ||
+      new Date(b.latestEmail.receivedAt).getTime() - new Date(a.latestEmail.receivedAt).getTime()
   );
 }
 
@@ -136,6 +142,7 @@ export function mergeThreadEmails(
   const participantNames = getThreadParticipants(mergedEmails);
   const hasUnread = mergedEmails.some(e => !e.keywords?.$seen);
   const hasStarred = mergedEmails.some(e => e.keywords?.$flagged);
+  const hasPinned = mergedEmails.some(e => e.keywords?.['$pinned']);
   const hasAttachment = mergedEmails.some(e => e.hasAttachment);
   const hasAnswered = mergedEmails.some(e => e.keywords?.$answered);
   const hasForwarded = mergedEmails.some(e => e.keywords?.$forwarded);
@@ -147,6 +154,7 @@ export function mergeThreadEmails(
     participantNames,
     hasUnread,
     hasStarred,
+    hasPinned,
     hasAttachment,
     hasAnswered,
     hasForwarded,
diff --git a/locales/cs/common.json b/locales/cs/common.json
index 32df1198..328fc680 100644
--- a/locales/cs/common.json
+++ b/locales/cs/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Označit jako nepřečtené",
     "star": "Označit hvězdičkou",
     "unstar": "Odebrat hvězdičku",
+    "pin": "Připnout",
+    "unpin": "Odepnout",
     "move_to": "Přesunout do...",
     "archive": "Archivovat",
     "delete": "Odstranit",
diff --git a/locales/da/common.json b/locales/da/common.json
index 6c21af91..eeb70cac 100644
--- a/locales/da/common.json
+++ b/locales/da/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Markér som ulæst",
     "star": "Stjernemarkér",
     "unstar": "Fjern stjerne",
+    "pin": "Fastgør",
+    "unpin": "Frigør",
     "move_to": "Flyt til...",
     "archive": "Arkivér",
     "delete": "Slet",
diff --git a/locales/de/common.json b/locales/de/common.json
index 4712df5c..c74a9b5c 100644
--- a/locales/de/common.json
+++ b/locales/de/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Als ungelesen markieren",
     "star": "Stern hinzufügen",
     "unstar": "Stern entfernen",
+    "pin": "Anheften",
+    "unpin": "Lösen",
     "move_to": "Verschieben nach...",
     "archive": "Archivieren",
     "delete": "Löschen",
diff --git a/locales/en/common.json b/locales/en/common.json
index aa9620e4..a1adfc81 100644
--- a/locales/en/common.json
+++ b/locales/en/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Mark as Unread",
     "star": "Star",
     "unstar": "Unstar",
+    "pin": "Pin",
+    "unpin": "Unpin",
     "move_to": "Move to...",
     "archive": "Archive",
     "delete": "Delete",
diff --git a/locales/es/common.json b/locales/es/common.json
index d0977f0c..50cc0583 100644
--- a/locales/es/common.json
+++ b/locales/es/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Marcar como No Leído",
     "star": "Destacar",
     "unstar": "Quitar Destacado",
+    "pin": "Anclar",
+    "unpin": "Desanclar",
     "move_to": "Mover a...",
     "archive": "Archivar",
     "delete": "Eliminar",
diff --git a/locales/fa/common.json b/locales/fa/common.json
index 602177d6..196d2891 100644
--- a/locales/fa/common.json
+++ b/locales/fa/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "علامت‌گذاری خوانده نشده",
     "star": "ستاره‌دار",
     "unstar": "حذف ستاره",
+    "pin": "سنجاق کردن",
+    "unpin": "برداشتن سنجاق",
     "move_to": "انتقال به...",
     "archive": "بایگانی",
     "delete": "حذف",
diff --git a/locales/fr/common.json b/locales/fr/common.json
index 0ed9f37d..68aadb36 100644
--- a/locales/fr/common.json
+++ b/locales/fr/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Marquer comme non lu",
     "star": "Marquer comme favori",
     "unstar": "Retirer des favoris",
+    "pin": "Épingler",
+    "unpin": "Désépingler",
     "move_to": "Déplacer vers...",
     "archive": "Archiver",
     "delete": "Supprimer",
diff --git a/locales/hu/common.json b/locales/hu/common.json
index 90968c71..86d0050e 100644
--- a/locales/hu/common.json
+++ b/locales/hu/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Olvasatlannak jelölés",
     "star": "Csillagozás",
     "unstar": "Csillagozás megszüntetése",
+    "pin": "Rögzítés",
+    "unpin": "Rögzítés feloldása",
     "move_to": "Áthelyezés ide...",
     "archive": "Archiválás",
     "delete": "Törlés",
diff --git a/locales/it/common.json b/locales/it/common.json
index 7d6a17da..16280a98 100644
--- a/locales/it/common.json
+++ b/locales/it/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Segna come non letto",
     "star": "Aggiungi stella",
     "unstar": "Rimuovi stella",
+    "pin": "Fissa",
+    "unpin": "Non fissare più",
     "move_to": "Sposta in...",
     "archive": "Archivia",
     "delete": "Elimina",
diff --git a/locales/ja/common.json b/locales/ja/common.json
index 3106458d..5d833a49 100644
--- a/locales/ja/common.json
+++ b/locales/ja/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "未読にする",
     "star": "スターを付ける",
     "unstar": "スターを外す",
+    "pin": "ピン留め",
+    "unpin": "ピン留めを外す",
     "move_to": "移動...",
     "archive": "アーカイブ",
     "delete": "削除",
diff --git a/locales/ko/common.json b/locales/ko/common.json
index 9bef1adc..91313404 100644
--- a/locales/ko/common.json
+++ b/locales/ko/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "읽지 않은 상태로 표시",
     "star": "별표 달기",
     "unstar": "별표 해제",
+    "pin": "고정",
+    "unpin": "고정 해제",
     "move_to": "이동...",
     "archive": "보관",
     "delete": "삭제",
diff --git a/locales/lv/common.json b/locales/lv/common.json
index 856ce746..d7167112 100644
--- a/locales/lv/common.json
+++ b/locales/lv/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Atzīmēt kā nelasītu",
     "star": "Pievienot zvaigznīti",
     "unstar": "Noņemt zvaigznīti",
+    "pin": "Piespraust",
+    "unpin": "Atspraust",
     "move_to": "Pārvietot uz...",
     "archive": "Arhivēt",
     "delete": "Dzēst",
diff --git a/locales/nl/common.json b/locales/nl/common.json
index 8e9569ce..083d208b 100644
--- a/locales/nl/common.json
+++ b/locales/nl/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Markeren als ongelezen",
     "star": "Ster toevoegen",
     "unstar": "Ster verwijderen",
+    "pin": "Vastmaken",
+    "unpin": "Losmaken",
     "move_to": "Verplaatsen naar...",
     "archive": "Archiveren",
     "delete": "Verwijderen",
diff --git a/locales/pl/common.json b/locales/pl/common.json
index 746601c6..3a630fdd 100644
--- a/locales/pl/common.json
+++ b/locales/pl/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Oznacz jako nieprzeczytane",
     "star": "Oznacz gwiazdką",
     "unstar": "Usuń gwiazdkę",
+    "pin": "Przypnij",
+    "unpin": "Odepnij",
     "move_to": "Przenieś do...",
     "archive": "Archiwizuj",
     "delete": "Usuń",
diff --git a/locales/pt/common.json b/locales/pt/common.json
index 26efb746..f56975a0 100644
--- a/locales/pt/common.json
+++ b/locales/pt/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Marcar como Não Lido",
     "star": "Adicionar Estrela",
     "unstar": "Remover Estrela",
+    "pin": "Fixar",
+    "unpin": "Desafixar",
     "move_to": "Mover para...",
     "archive": "Arquivar",
     "delete": "Excluir",
diff --git a/locales/ro/common.json b/locales/ro/common.json
index 2a3af4cf..c093bc38 100644
--- a/locales/ro/common.json
+++ b/locales/ro/common.json
@@ -808,6 +808,7 @@
     "pl": "Poloneză",
     "pt": "Portugheză",
     "ru": "Русский",
+    "sk": "Slovacă",
     "uk": "Ukrainiană",
     "zh": "Chineză simplificată",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Marcați ca necitit",
     "star": "Stea",
     "unstar": "Anulează marcarea cu stea",
+    "pin": "Fixează",
+    "unpin": "Anulează fixarea",
     "move_to": "Mergi la...",
     "archive": "Arhivează",
     "delete": "Șterge",
diff --git a/locales/ru/common.json b/locales/ru/common.json
index 6f9f6695..aff27685 100644
--- a/locales/ru/common.json
+++ b/locales/ru/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Отметить как непрочитанное",
     "star": "Добавить звёздочку",
     "unstar": "Убрать звёздочку",
+    "pin": "Закрепить",
+    "unpin": "Открепить",
     "move_to": "Переместить в...",
     "archive": "В архив",
     "delete": "Удалить",
diff --git a/locales/sk/common.json b/locales/sk/common.json
index 5fd57572..f3e9797c 100644
--- a/locales/sk/common.json
+++ b/locales/sk/common.json
@@ -635,7 +635,9 @@
     "validation": {
       "recipient_required": "Pridajte príjemcu na odoslanie",
       "subject_required": "Pridajte predmet",
-      "body_required": "Napíšte správu alebo priložte súbor"
+      "body_required": "Napíšte správu alebo priložte súbor",
+      "attachments_uploading": "Prílohy sa stále nahrávajú - odošle sa hneď po ich dokončení",
+      "attachment_upload_failed": "Neodoslané - prílohu sa nepodarilo nahrať. Odstráňte ju a skúste to znova."
     },
     "upload_progress": "Nahrávanie {uploaded} / {total}",
     "upload_cancel": "Zrušiť nahrávanie",
@@ -675,7 +677,9 @@
     "recipient_edit_email": "Upraviť e-mailovú adresu",
     "recipient_edit_name": "Upraviť zobrazené meno",
     "recipient_email_placeholder": "E-mailová adresa",
-    "recipient_name_placeholder": "Zobrazené meno"
+    "recipient_name_placeholder": "Zobrazené meno",
+    "autocomplete_search_server": "Hľadať na serveri",
+    "autocomplete_searching": "Hľadanie..."
   },
   "confirm_dialog": {
     "confirm": "Potvrdiť",
@@ -1051,6 +1055,14 @@
         "preview_this_week": "Tento týždeň:",
         "preview_older": "Staršie:"
       },
+      "date_locale": {
+        "label": "Date format region",
+        "description": "How numeric dates are ordered (day, month, year)",
+        "auto": "Automatic (match language)",
+        "iso": "ISO 8601 (YYYY-MM-DD)",
+        "dmy": "Day/Month/Year",
+        "mdy": "Month/Day/Year"
+      },
       "time_format": {
         "label": "Formát času",
         "description": "Vyberte 12-hodinový alebo 24-hodinový formát času",
@@ -1943,6 +1955,8 @@
     "mark_unread": "Označiť ako neprečítané",
     "star": "Hviezdička",
     "unstar": "Odstrániť hviezdičku",
+    "pin": "Pripnúť",
+    "unpin": "Odopnúť",
     "move_to": "Presunúť do...",
     "archive": "Archivovať",
     "delete": "Odstrániť",
diff --git a/locales/tr/common.json b/locales/tr/common.json
index e1ecea1d..39faf3e9 100644
--- a/locales/tr/common.json
+++ b/locales/tr/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Okunmadı Olarak İşaretle",
     "star": "Yıldız Ekle",
     "unstar": "Yıldızı Kaldır",
+    "pin": "Sabitle",
+    "unpin": "Sabitlemeyi kaldır",
     "move_to": "Şuraya taşı...",
     "archive": "Arşivle",
     "delete": "Sil",
diff --git a/locales/uk/common.json b/locales/uk/common.json
index 0c2403bf..002f0e62 100644
--- a/locales/uk/common.json
+++ b/locales/uk/common.json
@@ -806,6 +806,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "polish": "Polski",
@@ -1954,6 +1955,8 @@
     "mark_unread": "Позначити як непрочитане",
     "star": "зірка",
     "unstar": "Зняти зірочку",
+    "pin": "Закріпити",
+    "unpin": "Відкріпити",
     "move_to": "Перейти до...",
     "archive": "Архів",
     "delete": "Видалити",
diff --git a/locales/zh/common.json b/locales/zh/common.json
index 2d69e8f0..8a794a3c 100644
--- a/locales/zh/common.json
+++ b/locales/zh/common.json
@@ -808,6 +808,7 @@
     "pl": "Polski",
     "pt": "Português",
     "ru": "Русский",
+    "sk": "Slovenčina",
     "uk": "Українська",
     "zh": "简体中文",
     "fa": "فارسی",
@@ -1954,6 +1955,8 @@
     "mark_unread": "标记为未读",
     "star": "加星标",
     "unstar": "取消星标",
+    "pin": "固定",
+    "unpin": "取消固定",
     "move_to": "移动到…",
     "archive": "归档",
     "delete": "删除",
diff --git a/proxy.ts b/proxy.ts
index c108e2f9..f0905645 100644
--- a/proxy.ts
+++ b/proxy.ts
@@ -112,7 +112,7 @@ export async function proxy(request: NextRequest) {
     `script-src ${scriptSrc}`,
     `style-src 'self' 'unsafe-inline'`,
     `img-src 'self' data: blob: https:`,
-    `font-src 'self'`,
+    `font-src 'self' https: data:`,
     `connect-src ${connectSrc}`,
     frameSrc,
     `object-src 'self' blob:`,
diff --git a/public/apple-touch-icon-120x120.png b/public/apple-touch-icon-120x120.png
new file mode 100644
index 00000000..ff841ef4
Binary files /dev/null and b/public/apple-touch-icon-120x120.png differ
diff --git a/public/apple-touch-icon-152x152.png b/public/apple-touch-icon-152x152.png
new file mode 100644
index 00000000..e7732130
Binary files /dev/null and b/public/apple-touch-icon-152x152.png differ
diff --git a/public/apple-touch-icon-167x167.png b/public/apple-touch-icon-167x167.png
new file mode 100644
index 00000000..03e90214
Binary files /dev/null and b/public/apple-touch-icon-167x167.png differ
diff --git a/public/apple-touch-icon-180x180.png b/public/apple-touch-icon-180x180.png
new file mode 100644
index 00000000..6603576b
Binary files /dev/null and b/public/apple-touch-icon-180x180.png differ
diff --git a/public/apple-touch-icon.png b/public/apple-touch-icon.png
new file mode 100644
index 00000000..6603576b
Binary files /dev/null and b/public/apple-touch-icon.png differ
diff --git a/stores/__tests__/auth-store-logout.test.ts b/stores/__tests__/auth-store-logout.test.ts
index 813b6744..e8629c8a 100644
--- a/stores/__tests__/auth-store-logout.test.ts
+++ b/stores/__tests__/auth-store-logout.test.ts
@@ -55,7 +55,7 @@ describe('auth-store logout redirects', () => {
     expect(fetchMock).toHaveBeenCalledWith('/api/auth/session?slot=0', { method: 'DELETE', keepalive: true });
   });
 
-  it('marks session expiry, preserves the current path, and redirects to login on refresh failure', async () => {
+  it('marks session expiry, preserves the current path, and redirects to login when the refresh is rejected (401)', async () => {
     vi.useFakeTimers();
 
     const fetchMock = vi.fn(async (input: FetchInput, init?: FetchInit) => {
@@ -63,7 +63,7 @@ describe('auth-store logout redirects', () => {
       const method = init?.method ?? 'GET';
 
       if (url === '/api/auth/token?slot=0' && method === 'PUT') {
-        return { ok: false, json: async () => ({}) };
+        return { ok: false, status: 401, json: async () => ({}) };
       }
 
       if (url === '/api/auth/token?slot=0' && method === 'DELETE') {
@@ -94,4 +94,74 @@ describe('auth-store logout redirects', () => {
     expect(sessionStorage.getItem('redirect_after_login')).toBe('/en/calendar?view=day');
     expect(replaceSpy).toHaveBeenCalledWith('/en/login');
   });
+
+  it('keeps the session and schedules a retry when the token endpoint is unavailable (5xx)', async () => {
+    vi.useFakeTimers();
+
+    const fetchMock = vi.fn(async (input: FetchInput, init?: FetchInit) => {
+      const url = String(input);
+      const method = init?.method ?? 'GET';
+
+      if (url === '/api/auth/token?slot=0' && method === 'PUT') {
+        return { ok: false, status: 503, json: async () => ({}) };
+      }
+
+      throw new Error(`Unexpected fetch call: ${method} ${url}`);
+    });
+
+    vi.stubGlobal('fetch', fetchMock);
+    const replaceSpy = vi.spyOn(browserNavigation, 'replaceWindowLocation').mockImplementation(() => {});
+
+    useAuthStore.setState({
+      isAuthenticated: true,
+      authMode: 'oauth',
+      activeAccountId: null,
+    });
+
+    const token = await useAuthStore.getState().refreshAccessToken();
+
+    expect(token).toBeNull();
+    expect(useAuthStore.getState().isAuthenticated).toBe(true);
+    expect(sessionStorage.getItem('session_expired')).toBeNull();
+    expect(replaceSpy).not.toHaveBeenCalled();
+
+    // A retry is armed: advancing past the ~30 s window fires a second PUT.
+    await vi.advanceTimersByTimeAsync(31_000);
+    const refreshPuts = fetchMock.mock.calls.filter(
+      ([input, init]) => String(input) === '/api/auth/token?slot=0' && init?.method === 'PUT',
+    );
+    expect(refreshPuts.length).toBe(2);
+    expect(useAuthStore.getState().isAuthenticated).toBe(true);
+  });
+
+  it('keeps the session when the refresh request fails with a network error', async () => {
+    vi.useFakeTimers();
+
+    const fetchMock = vi.fn(async (input: FetchInput, init?: FetchInit) => {
+      const url = String(input);
+      const method = init?.method ?? 'GET';
+
+      if (url === '/api/auth/token?slot=0' && method === 'PUT') {
+        throw new TypeError('Failed to fetch');
+      }
+
+      throw new Error(`Unexpected fetch call: ${method} ${url}`);
+    });
+
+    vi.stubGlobal('fetch', fetchMock);
+    const replaceSpy = vi.spyOn(browserNavigation, 'replaceWindowLocation').mockImplementation(() => {});
+
+    useAuthStore.setState({
+      isAuthenticated: true,
+      authMode: 'oauth',
+      activeAccountId: null,
+    });
+
+    const token = await useAuthStore.getState().refreshAccessToken();
+
+    expect(token).toBeNull();
+    expect(useAuthStore.getState().isAuthenticated).toBe(true);
+    expect(sessionStorage.getItem('session_expired')).toBeNull();
+    expect(replaceSpy).not.toHaveBeenCalled();
+  });
 });
\ No newline at end of file
diff --git a/stores/auth-store.ts b/stores/auth-store.ts
index d61e4a1c..d5502594 100644
--- a/stores/auth-store.ts
+++ b/stores/auth-store.ts
@@ -75,6 +75,32 @@ function isRateLimitError(error: unknown): error is RateLimitError {
   return error instanceof RateLimitError;
 }
 
+// An auth/session endpoint answered with a server-side error (5xx) - an
+// outage, not a rejection of our credentials.
+class TransientAuthError extends Error {
+  constructor(message: string, readonly status: number) {
+    super(`${message}: ${status}`);
+  }
+}
+
+// True when a restore/refresh attempt failed because the server could not be
+// reached (network error) or answered 5xx (restart, maintenance, proxy
+// hiccup). Such failures must keep the account and its cookies - "stay signed
+// in" has to survive downtime and offline spells. Only a definitive rejection
+// (401/400) may evict. Mirrors the rate-limit carve-out (#104).
+function isTransientAuthError(error: unknown): boolean {
+  if (error instanceof TransientAuthError) return true;
+  // fetch() rejects with TypeError when the network is unreachable.
+  if (error instanceof TypeError) return true;
+  // JMAPClient.connect()/refreshSession() embed the HTTP status in the
+  // message - a 5xx there is the server being down, not an auth failure.
+  if (error instanceof Error) {
+    const m = error.message.match(/(?:Failed to get session|Session refresh failed): (\d{3})/);
+    if (m) return m[1].startsWith('5');
+  }
+  return false;
+}
+
 function getClientRateLimitState(client: IJMAPClient | null): Pick<AuthState, 'isRateLimited' | 'rateLimitUntil'> {
   if (!client) {
     return { isRateLimited: false, rateLimitUntil: null };
@@ -294,6 +320,10 @@ const clients = new Map<string, JMAPClient>();
 const refreshTimers = new Map<string, ReturnType<typeof setTimeout>>();
 const refreshPromises = new Map<string, Promise<string | null>>();
 
+// Pseudo-expiry passed to scheduleRefresh when a refresh failed transiently:
+// the "expiry - 60s" math below turns 90 into a retry in ~30 seconds.
+const TOKEN_REFRESH_RETRY_SECONDS = 90;
+
 function scheduleRefresh(expiresIn: number, refreshFn: () => Promise<string | null>, accountId?: string): void {
   if (accountId) {
     const existing = refreshTimers.get(accountId);
@@ -948,9 +978,18 @@ export const useAuthStore = create<AuthState>()(
             const res = await apiFetch(`/api/auth/token?slot=${slot}`, { method: 'PUT' });
 
             if (!res.ok) {
-              notifyParent('sso:session-expired');
-              markSessionExpired();
-              get().logout();
+              // Only a definitive 401 ends the session. Anything else (5xx
+              // while the server restarts, proxy errors) is an outage - keep
+              // the session and retry shortly so "stay signed in" survives
+              // maintenance windows and offline spells.
+              if (res.status === 401) {
+                notifyParent('sso:session-expired');
+                markSessionExpired();
+                get().logout();
+                return null;
+              }
+              debug.error(`Token refresh unavailable (${res.status}), retrying shortly`);
+              scheduleRefresh(TOKEN_REFRESH_RETRY_SECONDS, get().refreshAccessToken, accountId ?? undefined);
               return null;
             }
 
@@ -975,10 +1014,10 @@ export const useAuthStore = create<AuthState>()(
             scheduleRefresh(expires_in, get().refreshAccessToken, accountId ?? undefined);
             return access_token;
           } catch (error) {
-            debug.error('Token refresh failed:', error);
-            notifyParent('sso:session-expired');
-            markSessionExpired();
-            get().logout();
+            // Network failure (offline, Wi-Fi switch, server unreachable) -
+            // not a rejection. Keep the session and retry shortly.
+            debug.error('Token refresh failed, retrying shortly:', error);
+            scheduleRefresh(TOKEN_REFRESH_RETRY_SECONDS, get().refreshAccessToken, accountId ?? undefined);
             return null;
           } finally {
             refreshPromise = null;
@@ -1374,6 +1413,8 @@ export const useAuthStore = create<AuthState>()(
                   scheduleRefresh(expires_in, get().refreshAccessToken, account.id);
                   await syncStalwartAuthContext(account.serverUrl, account.username, client.getAuthHeader(), account.cookieSlot);
                   accountStore.updateAccount(account.id, { isConnected: true, hasError: false });
+                } else if (res.status >= 500) {
+                  throw new TransientAuthError('Token refresh failed', res.status);
                 } else {
                   throw new Error(`Token refresh failed: ${res.status}`);
                 }
@@ -1387,6 +1428,8 @@ export const useAuthStore = create<AuthState>()(
                   clients.set(account.id, client);
                   await syncStalwartAuthContext(serverUrl, username, client.getAuthHeader(), account.cookieSlot);
                   accountStore.updateAccount(account.id, { isConnected: true, hasError: false });
+                } else if (res.status >= 500) {
+                  throw new TransientAuthError('Session restore failed', res.status);
                 } else {
                   throw new Error(`Session cookie missing: ${res.status}`);
                 }
@@ -1401,6 +1444,18 @@ export const useAuthStore = create<AuthState>()(
                 });
                 continue;
               }
+              // Outage or offline - keep the account (and its cookies) so the
+              // session resumes once the server is reachable again. Same
+              // treatment as the rate-limit case above; only a definitive
+              // rejection below evicts.
+              if (isTransientAuthError(err)) {
+                accountStore.updateAccount(account.id, {
+                  isConnected: false,
+                  hasError: true,
+                  errorMessage: 'Server unreachable',
+                });
+                continue;
+              }
               // Remove unrestorable accounts so the user is prompted to log in
               // again rather than seeing a stale error entry forever.
               evictAccount(account.id);
@@ -1627,7 +1682,7 @@ export const useAuthStore = create<AuthState>()(
               }
             } catch (error) {
               debug.error('Basic session restore failed:', error);
-              if (isRateLimitError(error)) {
+              if (isRateLimitError(error) || isTransientAuthError(error)) {
                 set({ isLoading: false, error: 'connection_failed', isRateLimited: false, rateLimitUntil: null });
                 return;
               }
diff --git a/stores/email-store.ts b/stores/email-store.ts
index 7e3b23ab..0967f670 100644
--- a/stores/email-store.ts
+++ b/stores/email-store.ts
@@ -945,7 +945,7 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
 
       // When filtering by tag, omit the mailbox constraint so emails across
       // all folders that carry the tag are returned.
-      const result = await effectiveClient.getEmails(selectedKeyword ? undefined : jmapMailboxId, accountId, emailsPerPage, 0, keywordFilter);
+      const result = await effectiveClient.getEmails(selectedKeyword ? undefined : jmapMailboxId, accountId, emailsPerPage, 0, keywordFilter, true);
       set({
         emails: annotateScheduledEmails(result.emails, get().scheduledSubmissionByEmailId),
         hasMoreEmails: result.hasMore,
@@ -1108,7 +1108,7 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
         const jmapMailboxId = mailbox?.originalId || selectedMailbox;
 
         // When filtering by tag, omit the mailbox constraint (same rationale as fetchEmails).
-        result = await effectiveClient.getEmails(selectedKeyword ? undefined : jmapMailboxId, accountId, emailsPerPage, position, selectedKeyword ? `$label:${selectedKeyword}` : undefined);
+        result = await effectiveClient.getEmails(selectedKeyword ? undefined : jmapMailboxId, accountId, emailsPerPage, position, selectedKeyword ? `$label:${selectedKeyword}` : undefined, true);
       }
 
       if (selectedMailbox === ALL_MAIL_MAILBOX_ID) {
@@ -2278,10 +2278,44 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
       const alsoMarkRead = useSettingsStore.getState().deleteAction === 'trash-and-read' && isUnread;
       await actionClient.markAsSpam(emailId, accountId, alsoMarkRead);
 
-      set(state => ({
-        emails: state.emails.filter(e => e.id !== emailId),
-        selectedEmail: getNextSelectedEmail(state, emailId),
-      }));
+      // Same junk resolution the client used for the move itself.
+      const junkMailbox = mailboxes.find(m =>
+        accountId ? (m.role === 'junk' && m.accountId === accountId) : (m.role === 'junk' && !m.isShared)
+      );
+      // After marking read in the same request, the email arrives in junk as read.
+      const arrivesUnread = isUnread && !alsoMarkRead;
+
+      set(state => {
+        // Counter changes go to the email's own account list; source and junk
+        // live in the same account. (#281)
+        const mailboxPatch = applyMailboxCounterUpdate(state, email, (mailbox) => {
+          if (emailInMailbox(email, mailbox)) {
+            return {
+              ...mailbox,
+              totalEmails: Math.max(0, mailbox.totalEmails - 1),
+              unreadEmails: isUnread ? Math.max(0, mailbox.unreadEmails - 1) : mailbox.unreadEmails,
+              totalThreads: Math.max(0, mailbox.totalThreads - 1),
+              unreadThreads: isUnread ? Math.max(0, mailbox.unreadThreads - 1) : mailbox.unreadThreads,
+            };
+          }
+          if (junkMailbox && mailbox.id === junkMailbox.id) {
+            return {
+              ...mailbox,
+              totalEmails: mailbox.totalEmails + 1,
+              unreadEmails: arrivesUnread ? mailbox.unreadEmails + 1 : mailbox.unreadEmails,
+              totalThreads: mailbox.totalThreads + 1,
+              unreadThreads: arrivesUnread ? mailbox.unreadThreads + 1 : mailbox.unreadThreads,
+            };
+          }
+          return mailbox;
+        });
+
+        return {
+          emails: state.emails.filter(e => e.id !== emailId),
+          selectedEmail: getNextSelectedEmail(state, emailId),
+          ...mailboxPatch,
+        };
+      });
     } catch (error) {
       console.error('Failed to mark as spam:', error);
       throw error;
@@ -2340,6 +2374,15 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
 
     try {
       await undoClient.undoSpam(emailId, targetMailboxId, accountId);
+
+      // Drop the restored mail from the current junk view and advance the open
+      // message to the next one, mirroring markAsSpam. Without this the viewer
+      // stays stuck on the mail that just left the folder.
+      set(state => ({
+        emails: state.emails.filter(e => e.id !== emailId),
+        selectedEmail: getNextSelectedEmail(state, emailId),
+      }));
+
       // Refresh the view the user is actually looking at.
       if (get().isUnifiedView && get().crossView) {
         const includeGroup = useSettingsStore.getState().includeGroupInUnified;
@@ -2352,6 +2395,11 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
       } else {
         await get().fetchEmails(client, selectedMailbox);
       }
+
+      // Folder counts don't move on their own without a reliable JMAP push
+      // (often absent on subpath/cross-origin deploys), so refresh them here so
+      // the junk folder's badge drops right away.
+      void get().fetchMailboxes(client);
     } catch (error) {
       console.error('Failed to restore email:', error);
       throw error;
@@ -2375,11 +2423,52 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
         await effectiveClient.markAsSpam(emailId, currentMailbox.accountId, markRead);
       }
 
-      set(state => ({
-        emails: state.emails.filter(e => !emailIds.includes(e.id)),
-        selectedEmail: emailIds.includes(state.selectedEmail?.id || '') ? null : state.selectedEmail,
-        selectedEmailIds: new Set(),
-      }));
+      // Adjust counters and drop the emails from the current view. Junk is
+      // resolved the same way the client did for the move itself.
+      const affected = emails.filter(e => emailIds.includes(e.id));
+      const junkMailbox = mailboxes.find(m =>
+        currentMailbox.accountId
+          ? (m.role === 'junk' && m.accountId === currentMailbox.accountId)
+          : (m.role === 'junk' && !m.isShared)
+      );
+      let junkTotal = 0;
+      let junkUnread = 0;
+      for (const e of affected) {
+        junkTotal += 1;
+        // After marking read in the same request, the email arrives in junk as read.
+        if (!e.keywords?.$seen && !alsoMarkRead) junkUnread += 1;
+      }
+
+      set(state => {
+        // Decrement source folders per the email's own account list (#281).
+        const patch = applyBatchMailboxCounterUpdate(state, affected, (mb, group) => {
+          let dTotal = 0;
+          let dUnread = 0;
+          for (const e of group as Email[]) {
+            if (emailInMailbox(e, mb)) {
+              dTotal--;
+              if (!e.keywords?.$seen) dUnread--;
+            }
+          }
+          return dTotal === 0 && dUnread === 0 ? mb : {
+            ...mb,
+            totalEmails: Math.max(0, mb.totalEmails + dTotal),
+            unreadEmails: Math.max(0, mb.unreadEmails + dUnread),
+          };
+        });
+        // The junk folder (picked from the active/viewing list) gains them.
+        if (junkMailbox) {
+          patch.mailboxes = patch.mailboxes.map(mb => mb.id === junkMailbox.id
+            ? { ...mb, totalEmails: mb.totalEmails + junkTotal, unreadEmails: mb.unreadEmails + junkUnread }
+            : mb);
+        }
+        return {
+          emails: state.emails.filter(e => !emailIds.includes(e.id)),
+          selectedEmail: emailIds.includes(state.selectedEmail?.id || '') ? null : state.selectedEmail,
+          selectedEmailIds: new Set(),
+          ...patch,
+        };
+      });
     } catch (error) {
       console.error('Failed to batch mark as spam:', error);
       throw error;
@@ -2409,11 +2498,41 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
         await effectiveClient.undoSpam(emailId, inboxMailbox.originalId || inboxMailbox.id, accountId);
       }
 
-      set(state => ({
-        emails: state.emails.filter(e => !emailIds.includes(e.id)),
-        selectedEmail: emailIds.includes(state.selectedEmail?.id || '') ? null : state.selectedEmail,
-        selectedEmailIds: new Set(),
-      }));
+      // Adjust counters and drop the restored emails from the junk view.
+      const affected = get().emails.filter(e => emailIds.includes(e.id));
+      let unreadDelta = 0;
+      for (const e of affected) {
+        if (!e.keywords?.$seen) unreadDelta += 1;
+      }
+
+      set(state => {
+        // Decrement source folders per the email's own account list (#281).
+        const patch = applyBatchMailboxCounterUpdate(state, affected, (mb, group) => {
+          let dTotal = 0;
+          let dUnread = 0;
+          for (const e of group as Email[]) {
+            if (emailInMailbox(e, mb)) {
+              dTotal--;
+              if (!e.keywords?.$seen) dUnread--;
+            }
+          }
+          return dTotal === 0 && dUnread === 0 ? mb : {
+            ...mb,
+            totalEmails: Math.max(0, mb.totalEmails + dTotal),
+            unreadEmails: Math.max(0, mb.unreadEmails + dUnread),
+          };
+        });
+        // The inbox (picked from the active/viewing list) gains them.
+        patch.mailboxes = patch.mailboxes.map(mb => mb.id === inboxMailbox.id
+          ? { ...mb, totalEmails: mb.totalEmails + affected.length, unreadEmails: mb.unreadEmails + unreadDelta }
+          : mb);
+        return {
+          emails: state.emails.filter(e => !emailIds.includes(e.id)),
+          selectedEmail: emailIds.includes(state.selectedEmail?.id || '') ? null : state.selectedEmail,
+          selectedEmailIds: new Set(),
+          ...patch,
+        };
+      });
     } catch (error) {
       console.error('Failed to batch restore emails:', error);
       throw error;
@@ -2524,7 +2643,7 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
         const filter = buildJMAPFilter(searchQuery, searchFilters, jmapMailboxId);
         result = await effectiveClient.advancedSearchEmails(filter, accountId, emailsPerPage, 0);
       } else {
-        result = await effectiveClient.getEmails(jmapMailboxId, accountId, emailsPerPage, 0);
+        result = await effectiveClient.getEmails(jmapMailboxId, accountId, emailsPerPage, 0, undefined, true);
       }
 
       const currentEmails = get().emails;
@@ -2534,7 +2653,9 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
       // Without these guards the toast/sound also fires when sending,
       // saving drafts, or moving/deleting the top message in any mailbox,
       // because all of those change the first-email id of the current view.
-      const newFirst = result.emails[0];
+      // Pinned mails sit above the date order, so the newest mail is the
+      // first NON-pinned entry (a just-arrived mail cannot be pinned yet).
+      const newFirst = result.emails.find(e => !e.keywords?.['$pinned']) ?? result.emails[0];
       if (
         newFirst &&
         mailbox?.role === 'inbox' &&