Merge dev into main - version 1.4.4

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## 1.4.4 (2026-03-19)
+
+### Features
+
+- **Calendar**: Implement CalDAV discovery API with automatic calendar home resolution for multi-account setups
+- **Calendar**: Enhance calendar management settings with mailbox role reassignment controls
+- **Email**: Add signature rendering utilities with HTML-to-text conversion and sanitization
+
+### Fixes
+
+- **Auth**: Fix account session handling to update existing accounts instead of duplicating entries
+- **Auth**: Fix logout redirects and unauthenticated home page rendering
+- **Calendar**: Fix duplicate calendar edits and prevent double-save submissions in event modal
+- **Calendar**: Remove stale calendar ID references in favor of CalDAV-discovered IDs
+- **Contacts**: Improve RFC 9553 compliance for contact birthdays and address formatting
+- **Email**: Fix email signature rendering for identity signatures
+- **Folders**: Improve mailbox role management by clearing roles from all mailboxes before reassigning
+
 ## 1.4.3 (2026-03-19)
 
 ### Features

README.md

@@ -3,7 +3,7 @@
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="public/branding/Bulwark_Logo_with_Lettering_White_and_Color.svg" />
   <source media="(prefers-color-scheme: light)" srcset="public/branding/Bulwark_Logo_with_Lettering_Dark_Color.svg" />
-  <img src="public/branding/Bulwark_Logo_with_Lettering_Dark_Color.svg" alt="Bulwark Webmail" width="480" />
+  <img src="public/branding/Bulwark_Logo_with_Lettering_Dark_Color.svg" alt="Bulwark Webmail" width="280" />
 </picture>
 
 # Bulwark Webmail
@@ -25,16 +25,16 @@ Built with Next.js and the JMAP protocol.
 <tr>
 <td width="50%">
 
-<img src="screenshots/inbox.png" width="100%" alt="Inbox - three-pane layout with sidebar, email list, and viewer (dark mode)">
+<img src="screenshots/inbox.png" width="100%" alt="Inbox — three-pane layout with sidebar, email list, and viewer (dark mode)">
 
-**Mail** - Three-pane layout with sidebar, email list, and viewer
+**Mail** — Three-pane layout with sidebar, email list, and viewer
 
 </td>
 <td width="50%">
 
 <img src="screenshots/calendar.png" width="100%" alt="Calendar">
 
-**Calendar** - Month, week, day, and agenda views with event management
+**Calendar** — Month, week, day, and agenda views with event management
 
 </td>
 </tr>
@@ -43,14 +43,14 @@ Built with Next.js and the JMAP protocol.
 
 <img src="screenshots/contacts.png" width="100%" alt="Contacts">
 
-**Contacts** - Contact management with groups and vCard support
+**Contacts** — Contact management with groups and vCard support
 
 </td>
 <td width="50%">
 
 <img src="screenshots/files.png" width="100%" alt="File browser">
 
-**Files** - Cloud file browser with upload, preview, and folder navigation
+**Files** — Cloud file browser with upload, preview, and folder navigation
 
 </td>
 </tr>
@@ -62,16 +62,16 @@ Built with Next.js and the JMAP protocol.
 <tr>
 <td width="50%">
 
-<img src="screenshots/inbox%20whitemode.png" width="100%" alt="Inbox - light mode">
+<img src="screenshots/inbox%20whitemode.png" width="100%" alt="Inbox — light mode">
 
-**Light mode** - Full theme support with intelligent color transformation
+**Light mode** — Full theme support with intelligent color transformation
 
 </td>
 <td width="50%">
 
 <img src="screenshots/settings.png" width="100%" alt="Settings">
 
-**Settings** - Appearance, identities, filters, templates, and more
+**Settings** — Appearance, identities, filters, templates, and more
 
 </td>
 </tr>
@@ -80,7 +80,7 @@ Built with Next.js and the JMAP protocol.
 
 <img src="screenshots/login.png" width="100%" alt="Login page">
 
-**Login** - Configurable branding with OAuth2/OIDC and 2FA support
+**Login** — Configurable branding with OAuth2/OIDC and 2FA support
 
 </td>
 <td width="50%">
@@ -94,21 +94,21 @@ Built with Next.js and the JMAP protocol.
 ### Mail
 
 - **Read, compose, reply, reply-all, forward** with rich HTML rendering
-- **Threading** - Gmail-style inline expansion with thread navigation
+- **Threading** — Gmail-style inline expansion with thread navigation
 - **Draft auto-save** with discard confirmation
-- **Attachments** - upload, download, and inline preview
+- **Attachments** — upload, download, and inline preview
-- **Search** - full-text with JMAP filter panel, search chips, cross-mailbox queries, wildcard support, and OR conditions
+- **Search** — full-text with JMAP filter panel, search chips, cross-mailbox queries, wildcard support, and OR conditions
-- **Batch operations** - multi-select with checkboxes, archive, delete, move, tag
+- **Batch operations** — multi-select with checkboxes, archive, delete, move, tag
-- **Archive modes** - archive directly or organize archived mail by year or month
+- **Archive modes** — archive directly or organize archived mail by year or month
 - **Print** emails directly from the viewer
 - **Color tags/labels** and star/unstar
 - **Virtual scrolling** for large mailboxes
 - **Quick reply** from the viewer
-- **Sender avatars** - favicon-based with negative caching for performance
+- **Sender avatars** — favicon-based with negative caching for performance
 - **Recipient popover** for quick contact interaction
-- **Folder management** - create, rename, delete folders with icon picker and subfolder support
+- **TNEF support** — extract Outlook `winmail.dat` message bodies and attachments automatically
-- **Tag counts** - unread and total counts displayed in sidebar
+- **Folder management** — create, rename, delete folders with icon picker and subfolder support
-- **TNEF support** - extract Outlook `winmail.dat` message bodies and attachments automatically
+- **Tag counts** — unread and total counts displayed in sidebar
 
 ### Calendar
 
@@ -116,8 +116,8 @@ Built with Next.js and the JMAP protocol.
 - **Event hover preview** popover with details
 - **Drag-and-drop rescheduling**, click-drag creation, edge-resize (15-min snap)
 - **Recurring events** with edit/delete scope (this / this and following / all)
-- **Participant scheduling** - iTIP invitations, organizer/attendee UI, RSVP
+- **Participant scheduling** — iTIP invitations, organizer/attendee UI, RSVP
-- **Inline calendar invitations** in email viewer - auto-detect `.ics`, RSVP, import
+- **Inline calendar invitations** in email viewer — auto-detect `.ics`, RSVP, import
 - **iCalendar import** with preview and bulk create
 - **Notifications** with configurable sound and alert persistence
 - **Real-time sync** via JMAP push
@@ -128,15 +128,15 @@ Built with Next.js and the JMAP protocol.
 - **Contact groups** with group expansion and member management
 - **vCard import/export** (RFC 6350) with duplicate detection
 - **Autocomplete** in composer (To/Cc/Bcc)
-- **Bulk operations** - multi-select, delete, group add, export
+- **Bulk operations** — multi-select, delete, group add, export
 
 ### Filters & Automation
 
 - **Server-side email filters** via JMAP Sieve Scripts (RFC 9661)
-- **Visual rule builder** - conditions (From, To, Subject, Size, Body…) and actions (Move, Forward, Star, Discard…)
+- **Visual rule builder** — conditions (From, To, Subject, Size, Body…) and actions (Move, Forward, Star, Discard…)
 - **Raw Sieve editor** with syntax validation
 - **Vacation responder** with date range scheduling and sidebar indicator
-- **Email templates** - reusable, categorized, with placeholder auto-fill (`{{recipientName}}`, `{{date}}`, etc.)
+- **Email templates** — reusable, categorized, with placeholder auto-fill (`{{recipientName}}`, `{{date}}`, etc.)
 
 ### Files
 
@@ -144,39 +144,39 @@ Built with Next.js and the JMAP protocol.
 - **Upload and download** files with progress tracking and folder upload support
 - **Folder navigation** with breadcrumb path and tree sidebar
 - **Grid and list views** with sorting by name, size, or date
-- **Clipboard operations** - cut, copy, paste, duplicate files
+- **Clipboard operations** — cut, copy, paste, duplicate files
 - **File preview** for images, text, audio, video, and more
 - **Favorites and recent files** for quick access
-- **Bulk operations** - multi-select, delete, move, download
+- **Bulk operations** — multi-select, delete, move, download
 
 ### Security & Privacy
 
-- **External content blocked** by default - trusted senders list for auto-load
+- **External content blocked** by default — trusted senders list for auto-load
 - **HTML sanitization** via DOMPurify with XSS prevention
-- **S/MIME** - manage certificates, sign outgoing mail, encrypt to recipients, decrypt messages, and verify signatures
+- **S/MIME** — manage certificates, sign outgoing mail, encrypt to recipients, decrypt messages, and verify signatures
 - **SPF/DKIM/DMARC** status indicators
 - **OAuth2/OIDC with PKCE** for SSO (Keycloak, Authentik, or built-in), with OAuth-only mode
 - **TOTP two-factor authentication**
-- **Account security panel** - manage passwords and 2FA via Stalwart admin API
+- **Account security panel** — manage passwords and 2FA via Stalwart admin API
-- **"Remember me"** - AES-256-GCM encrypted httpOnly cookie (opt-in)
+- **"Remember me"** — AES-256-GCM encrypted httpOnly cookie (opt-in)
-- **Security headers** - CSP with per-request nonce, X-Frame-Options, Referrer-Policy
+- **Security headers** — CSP with per-request nonce, X-Frame-Options, Referrer-Policy
 - **Newsletter unsubscribe** (RFC 2369)
 
 ### Interface
 
-- **Three-pane layout** - sidebar, email list, viewer with resizable columns
+- **Three-pane layout** — sidebar, email list, viewer with resizable columns
 - **Dark and light themes** with intelligent email color transformation
-- **Responsive** - desktop sidebar + mobile bottom tab bar with tablet support
+- **Always-light email rendering** option for problematic HTML messages in dark theme
-- **Keyboard shortcuts** - full navigation without a mouse
+- **Responsive** — desktop sidebar + mobile bottom tab bar with tablet support
+- **Keyboard shortcuts** — full navigation without a mouse
 - **Drag-and-drop** email organization between mailboxes and tag assignment
 - **Right-click context menus**, toast notifications with undo, form validation with shake feedback
-- **Always-light email rendering** option for problematic HTML messages in dark theme
 - **Customizable toolbar** position, custom favicon, sidebar/login logos, and login page branding
-- **Sidebar apps** - pin custom tools to the navigation rail and open them inline or in a new tab
+- **Sidebar apps** — pin custom tools to the navigation rail and open them inline or in a new tab
-- **Settings sync** - preferences synchronized with the server (encrypted)
+- **Settings sync** — preferences synchronized with the server (encrypted)
 - **Storage quota** display
-- **Shared folders** - multi-account access
+- **Shared folders** — multi-account access
-- **Accessibility** - WCAG AA contrast, reduced-motion support, focus trap, screen reader live regions
+- **Accessibility** — WCAG AA contrast, reduced-motion support, focus trap, screen reader live regions
 
 ### Internationalization
 
@@ -187,13 +187,13 @@ Automatic browser detection with persistent preference.
 ### Identity Management
 
 - **Multiple sender identities** with per-identity signatures
-- **Sub-addressing** - `user+tag@domain.com` with contextual tag suggestions
+- **Identity refresh** — keep the identity manager aligned with server-side changes after edits
-- **Identity refresh** - keep the identity manager aligned with server-side changes after edits
+- **Sub-addressing** — `user+tag@domain.com` with contextual tag suggestions
 - **Identity badges** in viewer and email list
 
 ### Operations
 
-- **Automatic update check** - server logs when a newer release is available
+- **Automatic update check** — server logs when a newer release is available
 
 ---
 
@@ -211,7 +211,7 @@ Or with Docker Compose:
 
 ```bash
 cp .env.example .env.local
-# Edit .env.local - set JMAP_SERVER_URL
+# Edit .env.local — set JMAP_SERVER_URL
 docker compose up -d
 ```
 
@@ -222,7 +222,7 @@ git clone https://github.com/bulwarkmail/webmail.git
 cd webmail
 npm install
 cp .env.example .env.local
-# Edit .env.local - set JMAP_SERVER_URL
+# Edit .env.local — set JMAP_SERVER_URL
 npm run build && npm start
 ```
 
@@ -246,7 +246,7 @@ JMAP_SERVER_URL=https://mail.example.com
 APP_NAME=My Webmail
 ```
 
-All variables are **runtime** - Docker deployments can be configured without rebuilding.
+All variables are **runtime** — Docker deployments can be configured without rebuilding.
 
 <details>
 <summary>Server Listen Address</summary>
@@ -313,7 +313,7 @@ Credentials encrypted with AES-256-GCM, stored in an httpOnly cookie (30-day exp
 
 ## Why Stalwart?
 
-[Stalwart](https://github.com/stalwartlabs/mail-server) is a mail server written in Rust with **native JMAP support** - not IMAP/SMTP with JMAP bolted on. It handles JMAP, IMAP, SMTP, and ManageSieve in a single binary. Self-hosted, no third-party dependencies.
+[Stalwart](https://github.com/stalwartlabs/mail-server) is a mail server written in Rust with **native JMAP support** — not IMAP/SMTP with JMAP bolted on. It handles JMAP, IMAP, SMTP, and ManageSieve in a single binary. Self-hosted, no third-party dependencies.
 
 ## Contributing
 

VERSION

@@ -1 +1 @@
-1.4.3
+1.4.4

app/[locale]/page.tsx

@@ -41,6 +41,7 @@ import { useSidebarApps } from "@/hooks/use-sidebar-apps";
 import { Input } from "@/components/ui/input";
 import { FilePreviewModal } from "@/components/files/file-preview-modal";
 import { isFilePreviewable } from "@/lib/file-preview";
+import { appendPlainTextSignature } from "@/lib/signature-utils";
 import { Search, Filter, ChevronDown, X, Paperclip, Star, Mail, MailOpen, RotateCcw, PenSquare, PenLine, CheckSquare, Square } from "lucide-react";
 import { ResizeHandle } from "@/components/layout/resize-handle";
 import { Button } from "@/components/ui/button";
@@ -862,10 +863,7 @@ export default function Home() {
     const primaryIdentity = identities[0];
 
     // Append signature from the primary identity
-    let finalBody = body;
+    const finalBody = appendPlainTextSignature(body, primaryIdentity);
-    if (primaryIdentity?.textSignature) {
-      finalBody = body + '\n\n-- \n' + primaryIdentity.textSignature;
-    }
 
     // Send reply with just the body text
     await sendEmail(
@@ -1022,6 +1020,10 @@ export default function Home() {
     </button>
   );
 
+  if (!isAuthenticated) {
+    return null;
+  }
+
   return (
     <DragDropProvider>
       <div className="flex flex-col h-dvh bg-background overflow-hidden">

app/api/caldav/discover/route.ts

@@ -0,0 +1,103 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { logger } from '@/lib/logger';
+import { getStalwartCredentials } from '@/lib/stalwart/credentials';
+
+interface DiscoveryAccountRequest {
+  key: string;
+  candidates: string[];
+}
+
+interface DiscoveryResult {
+  url: string | null;
+  resolvedAccount: string | null;
+}
+
+function buildPublicUrl(serverUrl: string, path: string): string {
+  return new URL(path, serverUrl).toString();
+}
+
+async function probeCalendarHome(serverUrl: string, authHeader: string, accountName: string): Promise<string | null> {
+  const targetUrl = buildPublicUrl(serverUrl, `/dav/cal/${encodeURIComponent(accountName)}`);
+  const response = await fetch(targetUrl, {
+    method: 'PROPFIND',
+    headers: {
+      Authorization: authHeader,
+      Depth: '0',
+      'Content-Type': 'application/xml; charset=utf-8',
+    },
+    body: `<?xml version="1.0" encoding="utf-8"?>
+<D:propfind xmlns:D="DAV:">
+  <D:prop>
+    <D:resourcetype/>
+    <D:displayname/>
+  </D:prop>
+</D:propfind>`,
+    redirect: 'manual',
+  });
+
+  if (response.status === 207) {
+    return targetUrl;
+  }
+
+  if (response.status >= 300 && response.status < 400) {
+    const location = response.headers.get('Location');
+    if (location) {
+      return new URL(location, targetUrl).toString();
+    }
+  }
+
+  return null;
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const creds = await getStalwartCredentials(request);
+    if (!creds) {
+      return NextResponse.json({ error: 'Not authenticated' }, { status: 401 });
+    }
+
+    const body = await request.json().catch(() => ({}));
+    const accounts = Array.isArray(body.accounts) ? body.accounts as DiscoveryAccountRequest[] : [];
+    const wellKnownUrl = buildPublicUrl(creds.serverUrl, '/.well-known/caldav');
+    const discovered: Record<string, DiscoveryResult> = {};
+
+    for (const account of accounts) {
+      if (!account?.key) continue;
+
+      const candidates = Array.from(new Set(
+        (account.candidates || [])
+          .map((candidate) => candidate?.trim())
+          .filter((candidate): candidate is string => Boolean(candidate))
+      ));
+
+      let url: string | null = null;
+      let resolvedAccount: string | null = null;
+
+      for (const candidate of candidates) {
+        try {
+          url = await probeCalendarHome(creds.serverUrl, creds.authHeader, candidate);
+          if (url) {
+            resolvedAccount = candidate;
+            break;
+          }
+        } catch (error) {
+          logger.warn('CalDAV discovery probe failed', {
+            accountKey: account.key,
+            candidate,
+            error: error instanceof Error ? error.message : 'Unknown',
+          });
+        }
+      }
+
+      discovered[account.key] = { url, resolvedAccount };
+    }
+
+    return NextResponse.json({
+      wellKnownUrl,
+      accounts: discovered,
+    });
+  } catch (error) {
+    logger.error('CalDAV discovery failed', { error: error instanceof Error ? error.message : 'Unknown' });
+    return NextResponse.json({ error: 'Internal server error' }, { status: 500 });
+  }
+}

components/calendar/calendar-agenda-view.tsx

@@ -6,7 +6,7 @@ import { format, parseISO, isToday, isTomorrow } from "date-fns";
 import { Calendar as CalendarIcon, MapPin, Users } from "lucide-react";
 import { cn } from "@/lib/utils";
 import { parseDuration, getEventColor } from "./event-card";
-import { getEventDayBounds } from "@/lib/calendar-utils";
+import { getEventDayBounds, getPrimaryCalendarId } from "@/lib/calendar-utils";
 import { getParticipantCount } from "@/lib/calendar-participants";
 import type { CalendarEvent, Calendar } from "@/lib/jmap/types";
 
@@ -113,8 +113,8 @@ export function CalendarAgendaView({
 
           <div className="divide-y divide-border">
             {group.events.map((ev) => {
-              const calId = Object.keys(ev.calendarIds)[0];
+              const calId = getPrimaryCalendarId(ev);
-              const calendar = calendarMap.get(calId);
+              const calendar = calId ? calendarMap.get(calId) : undefined;
               const color = getEventColor(ev, calendar);
               const start = parseISO(ev.start);
               const durMin = parseDuration(ev.duration);

components/calendar/calendar-day-view.tsx

@@ -6,7 +6,7 @@ import { format, isToday, parseISO } from "date-fns";
 import { cn } from "@/lib/utils";
 import { EventCard, parseDuration } from "./event-card";
 import { QuickEventInput } from "./quick-event-input";
-import { getEventDayBounds, layoutOverlappingEvents, formatSnapTime } from "@/lib/calendar-utils";
+import { formatSnapTime, getEventDayBounds, getPrimaryCalendarId, layoutOverlappingEvents } from "@/lib/calendar-utils";
 import type { CalendarEvent, Calendar } from "@/lib/jmap/types";
 import { useTimeGridInteractions } from "@/hooks/use-time-grid-interactions";
 
@@ -127,12 +127,12 @@ export function CalendarDayView({
           <div className="text-[10px] text-muted-foreground mb-1">{t("events.all_day")}</div>
           <div className="space-y-1">
             {allDayEvents.map((ev) => {
-              const calId = Object.keys(ev.calendarIds)[0];
+              const calId = getPrimaryCalendarId(ev);
               return (
                 <EventCard
                   key={ev.id}
                   event={ev}
-                  calendar={calendarMap.get(calId)}
+                  calendar={calId ? calendarMap.get(calId) : undefined}
                   variant="chip"
                   onClick={(rect) => onSelectEvent(ev, rect)}
                   onMouseEnter={(rect) => onHoverEvent?.(ev, rect)}
@@ -192,7 +192,7 @@ export function CalendarDayView({
               const top = (startMin / 60) * HOUR_HEIGHT;
               const baseHeight = Math.max(24, (durMin / 60) * HOUR_HEIGHT);
               const height = resizeVisual?.eventId === ev.id ? resizeVisual.heightPx : baseHeight;
-              const calId = Object.keys(ev.calendarIds)[0];
+              const calId = getPrimaryCalendarId(ev);
               const leftPct = (column / totalColumns) * 100;
               const widthPct = (1 / totalColumns) * 100;
 
@@ -205,7 +205,7 @@ export function CalendarDayView({
                 >
                   <EventCard
                     event={ev}
-                    calendar={calendarMap.get(calId)}
+                    calendar={calId ? calendarMap.get(calId) : undefined}
                     variant="block"
                     onClick={(rect) => onSelectEvent(ev, rect)}
                     onMouseEnter={(rect) => onHoverEvent?.(ev, rect)}

components/calendar/calendar-month-view.tsx

@@ -8,7 +8,7 @@ import {
 } from "date-fns";
 import { cn } from "@/lib/utils";
 import { EventCard } from "./event-card";
-import { buildWeekSegments, getEventDayBounds } from "@/lib/calendar-utils";
+import { buildWeekSegments, getEventDayBounds, getPrimaryCalendarId } from "@/lib/calendar-utils";
 import type { CalendarEvent, Calendar } from "@/lib/jmap/types";
 import { useAuthStore } from "@/stores/auth-store";
 import { useCalendarStore } from "@/stores/calendar-store";
@@ -197,8 +197,8 @@ export function CalendarMonthView({
                     dayEvents.length > 0 && (
                       <div className="flex items-center justify-center gap-0.5 flex-wrap">
                         {dayEvents.slice(0, 3).map((ev) => {
-                          const calId = Object.keys(ev.calendarIds)[0];
+                          const calId = getPrimaryCalendarId(ev);
-                          const cal = calendarMap.get(calId);
+                          const cal = calId ? calendarMap.get(calId) : undefined;
                           const evColor = ev.color || cal?.color || "#3b82f6";
                           return (
                             <span
@@ -222,7 +222,7 @@ export function CalendarMonthView({
             {!isMobile && segments.length > 0 && (
               <div className="absolute inset-x-0 pointer-events-none" style={{ top: 30 }}>
                 {segments.map((segment) => {
-                  const calId = Object.keys(segment.event.calendarIds)[0];
+                  const calId = getPrimaryCalendarId(segment.event);
                   return (
                     <div
                       key={`${segment.event.id}-${segment.startIndex}-${segment.row}`}
@@ -236,7 +236,7 @@ export function CalendarMonthView({
                     >
                       <EventCard
                         event={segment.event}
-                        calendar={calendarMap.get(calId)}
+                        calendar={calId ? calendarMap.get(calId) : undefined}
                         variant="span"
                         continuesBefore={segment.continuesBefore}
                         continuesAfter={segment.continuesAfter}

components/calendar/calendar-sidebar-panel.tsx

@@ -47,7 +47,7 @@ export function CalendarSidebarPanel({
     const shared = calendars.filter(c => c.isShared);
     const groups = new Map<string, { accountName: string; calendars: Calendar[] }>();
     for (const cal of shared) {
-      const key = cal.accountId!;
+      const key = cal.accountId || cal.accountName || cal.id;
       if (!groups.has(key)) {
         groups.set(key, { accountName: cal.accountName || key, calendars: [] });
       }

components/calendar/calendar-toolbar.tsx

@@ -183,7 +183,7 @@ export function CalendarToolbar({
                 const shared = calendars.filter(c => c.isShared);
                 const groups = new Map<string, { accountName: string; cals: typeof shared }>();
                 for (const c of shared) {
-                  const key = c.accountId!;
+                  const key = c.accountId || c.accountName || c.id;
                   if (!groups.has(key)) groups.set(key, { accountName: c.accountName || key, cals: [] });
                   groups.get(key)!.cals.push(c);
                 }

components/calendar/calendar-week-view.tsx

@@ -8,7 +8,7 @@ import {
 import { cn } from "@/lib/utils";
 import { EventCard, parseDuration } from "./event-card";
 import { QuickEventInput } from "./quick-event-input";
-import { buildWeekSegments, getEventDayBounds, layoutOverlappingEvents, formatSnapTime } from "@/lib/calendar-utils";
+import { buildWeekSegments, formatSnapTime, getEventDayBounds, getPrimaryCalendarId, layoutOverlappingEvents } from "@/lib/calendar-utils";
 import type { CalendarEvent, Calendar } from "@/lib/jmap/types";
 import { useTimeGridInteractions } from "@/hooks/use-time-grid-interactions";
 
@@ -162,7 +162,7 @@ export function CalendarWeekView({
 
             <div className="absolute inset-0 pointer-events-none">
               {allDaySegments.map((segment) => {
-                const calId = Object.keys(segment.event.calendarIds)[0];
+                const calId = getPrimaryCalendarId(segment.event);
                 return (
                   <div
                     key={`${segment.event.id}-${segment.startIndex}-${segment.row}`}
@@ -176,7 +176,7 @@ export function CalendarWeekView({
                   >
                     <EventCard
                       event={segment.event}
-                      calendar={calendarMap.get(calId)}
+                      calendar={calId ? calendarMap.get(calId) : undefined}
                       variant="span"
                       continuesBefore={segment.continuesBefore}
                       continuesAfter={segment.continuesAfter}
@@ -284,7 +284,7 @@ export function CalendarWeekView({
                     const top = (startMin / 60) * HOUR_HEIGHT;
                     const baseHeight = Math.max(20, (durMin / 60) * HOUR_HEIGHT);
                     const height = resizeVisual?.eventId === ev.id ? resizeVisual.heightPx : baseHeight;
-                    const calId = Object.keys(ev.calendarIds)[0];
+                    const calId = getPrimaryCalendarId(ev);
                     const leftPct = (column / totalColumns) * 100;
                     const widthPct = (1 / totalColumns) * 100;
 
@@ -297,7 +297,7 @@ export function CalendarWeekView({
                       >
                         <EventCard
                           event={ev}
-                          calendar={calendarMap.get(calId)}
+                          calendar={calId ? calendarMap.get(calId) : undefined}
                           variant="block"
                           onClick={(rect) => onSelectEvent(ev, rect)}
                           onMouseEnter={(rect) => onHoverEvent?.(ev, rect)}

components/calendar/event-modal.tsx

@@ -8,7 +8,7 @@ import { X, Trash2, Check, Users, CalendarDays, Copy, Pencil, Clock, MapPin, Vid
 import { format, parseISO, addHours, addDays } from "date-fns";
 import type { CalendarEvent, Calendar, CalendarParticipant } from "@/lib/jmap/types";
 import { parseDuration, getEventColor } from "./event-card";
-import { buildAllDayDuration, getEventDisplayEndDate } from "@/lib/calendar-utils";
+import { buildAllDayDuration, getEventDisplayEndDate, getPrimaryCalendarId } from "@/lib/calendar-utils";
 import { ParticipantInput } from "./participant-input";
 import {
   isOrganizer,
@@ -25,7 +25,7 @@ interface EventModalProps {
   calendars: Calendar[];
   defaultDate?: Date;
   defaultEndDate?: Date;
-  onSave: (data: Partial<CalendarEvent>, sendSchedulingMessages?: boolean) => void;
+  onSave: (data: Partial<CalendarEvent>, sendSchedulingMessages?: boolean) => void | Promise<void>;
   onDelete?: (id: string, sendSchedulingMessages?: boolean) => void;
   onDuplicate?: (data: Partial<CalendarEvent>) => void;
   onRsvp?: (eventId: string, participantId: string, status: CalendarParticipant['participationStatus']) => void;
@@ -184,7 +184,7 @@ export function EventModal({
   const [endTime, setEndTime] = useState(formatTimeInput(getInitialEnd()));
   const [allDay, setAllDay] = useState(event?.showWithoutTime || false);
   const [calendarId, setCalendarId] = useState<string>(() => {
-    if (event?.calendarIds) return Object.keys(event.calendarIds)[0] || calendars[0]?.id || "";
+    if (event?.calendarIds) return getPrimaryCalendarId(event) || calendars[0]?.id || "";
     const defaultCal = calendars.find(c => c.isDefault);
     return defaultCal?.id || calendars[0]?.id || "";
   });
@@ -209,6 +209,7 @@ export function EventModal({
     return "none";
   });
   const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
+  const [isSaving, setIsSaving] = useState(false);
 
   const [attendees, setAttendees] = useState<{ name: string; email: string }[]>(() => {
     if (!event?.participants) return [];
@@ -231,9 +232,9 @@ export function EventModal({
     setAttendees(prev => prev.filter(a => a.email.toLowerCase() !== email.toLowerCase()));
   }, []);
 
-  const handleSave = useCallback(() => {
+  const handleSave = useCallback(async () => {
     const trimmedTitle = title.trim();
-    if (!trimmedTitle) return;
+    if (!trimmedTitle || isSaving) return;
     if (trimmedTitle.length > 500 || description.trim().length > 10000 || location.trim().length > 500) return;
 
     const startStr = allDay
@@ -343,8 +344,13 @@ export function EventModal({
     }
 
     const shouldSendScheduling = attendees.length > 0 && sendInvitations;
-    onSave(data, shouldSendScheduling);
+    setIsSaving(true);
-  }, [title, description, location, startDate, startTime, endDate, endTime, allDay, calendarId, recurrence, alert, attendees, sendInvitations, currentUserEmails, existingParticipants, event, onSave]);
+    try {
+      await onSave(data, shouldSendScheduling);
+    } finally {
+      setIsSaving(false);
+    }
+  }, [title, description, location, startDate, startTime, endDate, endTime, allDay, calendarId, recurrence, alert, attendees, sendInvitations, currentUserEmails, existingParticipants, event, onSave, isSaving]);
 
   const handleRsvp = useCallback((status: CalendarParticipant['participationStatus']) => {
     if (!event || !userParticipantId || !onRsvp) return;
@@ -945,7 +951,7 @@ export function EventModal({
             <Button variant="outline" onClick={isEdit ? () => setMode("view") : onClose}>
               {t("form.cancel")}
             </Button>
-            <Button onClick={handleSave} disabled={!title.trim()}>
+            <Button onClick={handleSave} disabled={!title.trim() || isSaving}>
               {t("form.save")}
             </Button>
           </div>

components/contacts/contact-detail.tsx

@@ -6,7 +6,7 @@ import { Mail, Phone, Building, MapPin, StickyNote, Pencil, Trash2, BookUser, Co
 import { Avatar } from "@/components/ui/avatar";
 import { Button } from "@/components/ui/button";
 import { cn } from "@/lib/utils";
-import type { ContactCard } from "@/lib/jmap/types";
+import type { ContactCard, AnniversaryDate, PartialDate } from "@/lib/jmap/types";
 import { getContactDisplayName, getContactPrimaryEmail } from "@/stores/contact-store";
 import { useSmimeStore } from "@/stores/smime-store";
 import { parseCertificatePemOrDer, extractCertificateInfo } from "@/lib/smime/certificate-utils";
@@ -26,12 +26,23 @@ function formatPhoneFeatures(features?: Record<string, boolean>): string {
   return Object.keys(features).filter(k => features[k]).join(", ");
 }
 
-function formatDate(dateInput: string | Record<string, unknown>): string {
+function formatDate(dateInput: AnniversaryDate): string {
   // Handle RFC 9553 PartialDate objects: { year?, month?, day?, calendarScale? }
+  // Handle RFC 9553 Timestamp objects: { "@type": "Timestamp", utc: "..." }
   if (typeof dateInput === 'object' && dateInput !== null) {
-    const year = dateInput.year as number | undefined;
+    if (dateInput['@type'] === 'Timestamp' && typeof dateInput.utc === 'string') {
-    const month = dateInput.month as number | undefined;
+      try {
-    const day = dateInput.day as number | undefined;
+        const d = new Date(dateInput.utc as string);
+        if (!isNaN(d.getTime())) {
+          return d.toLocaleDateString(undefined, { year: "numeric", month: "long", day: "numeric" });
+        }
+      } catch { /* fallback */ }
+      return String(dateInput.utc);
+    }
+    const pd = dateInput as PartialDate;
+    const year = pd.year;
+    const month = pd.month;
+    const day = pd.day;
     const monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
     const parts: string[] = [];
     if (month && monthNames[month - 1]) parts.push(monthNames[month - 1]);
@@ -282,9 +293,11 @@ export function ContactDetail({ contact, onEdit, onDelete, isMobile, className }
                   {addresses.map((a, i) => (
                     <div key={i} className="text-sm space-y-0.5 rounded-md border border-border/60 bg-muted/30 p-3">
                       <div>
-                        {a.fullAddress
+                        {a.full || a.fullAddress
-                          ? a.fullAddress
+                          ? (a.full || a.fullAddress)
-                          : [a.street, a.locality, a.region, a.postcode, a.country].filter(Boolean).join(", ")}
+                          : a.components && a.components.length > 0
+                            ? a.components.filter(c => c.kind !== 'separator').map(c => c.value).filter(Boolean).join(", ")
+                            : [a.street, a.locality, a.region, a.postcode, a.country].filter(Boolean).join(", ")}
                         {a.contexts && <ContextBadge contexts={a.contexts} />}
                       </div>
                       {a.timeZone && (

components/contacts/contact-form.tsx

@@ -6,7 +6,7 @@ import { X, Plus, ChevronDown, ChevronRight, User, Building, MapPin, Globe, Cake
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { cn } from "@/lib/utils";
-import type { ContactCard, ContactOnlineService, ContactAnniversary, ContactPersonalInfo, AddressBook } from "@/lib/jmap/types";
+import type { ContactCard, ContactOnlineService, ContactAnniversary, ContactPersonalInfo, AddressBook, AnniversaryDate, PartialDate, ContactAddress } from "@/lib/jmap/types";
 
 interface EmailEntry {
   address: string;
@@ -129,6 +129,67 @@ export function ContactForm({ contact, addressBooks, onSave, onCancel }: Contact
 
   const findComponent = (kind: string) => contact?.name?.components?.find(c => c.kind === kind)?.value || "";
 
+  // Convert RFC 9553 AnniversaryDate to ISO date string for HTML date input
+  function anniversaryDateToString(date: AnniversaryDate): string {
+    if (typeof date === 'string') return date;
+    if (date && typeof date === 'object') {
+      if ('@type' in date && date['@type'] === 'Timestamp' && 'utc' in date) {
+        return (date as { utc: string }).utc.split('T')[0];
+      }
+      const pd = date as PartialDate;
+      if (pd.year && pd.month && pd.day) {
+        return `${String(pd.year).padStart(4, '0')}-${String(pd.month).padStart(2, '0')}-${String(pd.day).padStart(2, '0')}`;
+      }
+      if (pd.month && pd.day) {
+        return `--${String(pd.month).padStart(2, '0')}-${String(pd.day).padStart(2, '0')}`;
+      }
+      if (pd.year && pd.month) {
+        return `${String(pd.year).padStart(4, '0')}-${String(pd.month).padStart(2, '0')}`;
+      }
+      if (pd.year) return String(pd.year);
+    }
+    return String(date);
+  }
+
+  // Convert ISO date string back to RFC 9553 PartialDate for the server
+  function stringToPartialDate(str: string): PartialDate {
+    if (str.startsWith('--')) {
+      const parts = str.substring(2).split('-');
+      const pd: PartialDate = { month: parseInt(parts[0], 10) };
+      if (parts[1]) pd.day = parseInt(parts[1], 10);
+      return pd;
+    }
+    const parts = str.split('-');
+    const pd: PartialDate = {};
+    if (parts[0]) pd.year = parseInt(parts[0], 10);
+    if (parts[1]) pd.month = parseInt(parts[1], 10);
+    if (parts[2]) pd.day = parseInt(parts[2], 10);
+    return pd;
+  }
+
+  // Extract flat address fields from RFC 9553 components format
+  function addressToFlat(a: ContactAddress): AddressEntry {
+    if (a.components && a.components.length > 0) {
+      const findComp = (kind: string) => a.components!.filter(c => c.kind === kind).map(c => c.value).join(' ');
+      return {
+        street: findComp('name') || findComp('number') ? [findComp('number'), findComp('name')].filter(Boolean).join(' ') : '',
+        locality: findComp('locality'),
+        region: findComp('region'),
+        postcode: findComp('postcode'),
+        country: findComp('country'),
+        context: a.contexts?.work ? 'work' : a.contexts?.private ? 'private' : '',
+      };
+    }
+    return {
+      street: a.street || '',
+      locality: a.locality || '',
+      region: a.region || '',
+      postcode: a.postcode || '',
+      country: a.country || '',
+      context: a.contexts?.work ? 'work' : a.contexts?.private ? 'private' : '',
+    };
+  }
+
   const [prefix, setPrefix] = useState(findComponent("prefix"));
   const [givenName, setGivenName] = useState(findComponent("given"));
   const [additionalName, setAdditionalName] = useState(findComponent("additional"));
@@ -184,14 +245,7 @@ export function ContactForm({ contact, addressBooks, onSave, onCancel }: Contact
 
   const [addresses, setAddresses] = useState<AddressEntry[]>(() => {
     if (contact?.addresses) {
-      return Object.values(contact.addresses).map(a => ({
+      return Object.values(contact.addresses).map(a => addressToFlat(a));
-        street: a.street || "",
-        locality: a.locality || "",
-        region: a.region || "",
-        postcode: a.postcode || "",
-        country: a.country || "",
-        context: a.contexts?.work ? "work" : a.contexts?.private ? "private" : "",
-      }));
     }
     return [];
   });
@@ -210,7 +264,7 @@ export function ContactForm({ contact, addressBooks, onSave, onCancel }: Contact
   const [anniversaries, setAnniversaries] = useState<AnniversaryEntry[]>(() => {
     if (contact?.anniversaries) {
       return Object.values(contact.anniversaries).map(a => ({
-        date: a.date,
+        date: anniversaryDateToString(a.date),
         kind: a.kind,
       }));
     }
@@ -336,12 +390,13 @@ export function ContactForm({ contact, addressBooks, onSave, onCancel }: Contact
 
     const addressesMap: Record<string, ContactCard["addresses"] extends Record<string, infer V> ? V : never> = {};
     addresses.filter(a => a.street.trim() || a.locality.trim() || a.country.trim()).forEach((a, i) => {
-      const obj: Record<string, unknown> = {};
+      const components: Array<{ kind: string; value: string }> = [];
-      if (a.street.trim()) obj.street = a.street.trim();
+      if (a.street.trim()) components.push({ kind: "name", value: a.street.trim() });
-      if (a.locality.trim()) obj.locality = a.locality.trim();
+      if (a.locality.trim()) components.push({ kind: "locality", value: a.locality.trim() });
-      if (a.region.trim()) obj.region = a.region.trim();
+      if (a.region.trim()) components.push({ kind: "region", value: a.region.trim() });
-      if (a.postcode.trim()) obj.postcode = a.postcode.trim();
+      if (a.postcode.trim()) components.push({ kind: "postcode", value: a.postcode.trim() });
-      if (a.country.trim()) obj.country = a.country.trim();
+      if (a.country.trim()) components.push({ kind: "country", value: a.country.trim() });
+      const obj: Record<string, unknown> = { components, isOrdered: true, defaultSeparator: ", " };
       if (a.context) obj.contexts = { [a.context]: true };
       // @ts-expect-error - dynamic build
       addressesMap[`a${i}`] = obj;
@@ -357,7 +412,7 @@ export function ContactForm({ contact, addressBooks, onSave, onCancel }: Contact
 
     const anniversariesMap: Record<string, ContactAnniversary> = {};
     anniversaries.filter(a => a.date.trim()).forEach((a, i) => {
-      anniversariesMap[`an${i}`] = { date: a.date.trim(), kind: a.kind };
+      anniversariesMap[`an${i}`] = { date: stringToPartialDate(a.date.trim()), kind: a.kind };
     });
 
     const personalInfoMap: Record<string, ContactPersonalInfo> = {};

components/email/email-composer.tsx

@@ -27,6 +27,7 @@ import { substitutePlaceholders } from "@/lib/template-utils";
 import { TemplatePicker } from "@/components/templates/template-picker";
 import { TemplateForm } from "@/components/templates/template-form";
 import type { EmailTemplate } from "@/lib/template-types";
+import { appendPlainTextSignature, getPlainTextSignature } from "@/lib/signature-utils";
 
 export interface ComposerDraftData {
   to: string;
@@ -199,6 +200,14 @@ export function EmailComposer({
   const { client } = useAuthStore();
   const identities = useIdentityStore((s) => s.identities);
   const primaryIdentity = identities[0] ?? null;
+  const currentIdentity = selectedIdentityId
+    ? identities.find((identity) => identity.id === selectedIdentityId) || primaryIdentity
+    : primaryIdentity;
+  const composerSignatureHtml = currentIdentity?.htmlSignature
+    ? `<div>${sanitizeEmailHtml(currentIdentity.htmlSignature)}</div>`
+    : currentIdentity?.textSignature
+      ? `<div>${getPlainTextSignature(currentIdentity).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\n/g, '<br>')}</div>`
+      : '';
   const getAutocomplete = useContactStore((s) => s.getAutocomplete);
   const addTemplate = useTemplateStore((s) => s.addTemplate);
   const sendRawEmail = useEmailStore((s) => s.sendRawEmail);
@@ -527,10 +536,6 @@ export function EmailComposer({
     setSaveStatus('saving');
 
     // Get the selected identity or primary identity
-    const currentIdentity = selectedIdentityId
-      ? identities.find(id => id.id === selectedIdentityId)
-      : primaryIdentity;
-
     // Generate sub-addressed email if tag is set
     const fromEmail = currentIdentity?.email
       ? subAddressTag
@@ -649,10 +654,6 @@ export function EmailComposer({
       }
     }
 
-    const currentIdentity = selectedIdentityId
-      ? identities.find(id => id.id === selectedIdentityId)
-      : primaryIdentity;
-
     const fromEmail = currentIdentity?.email
       ? subAddressTag
         ? generateSubAddress(currentIdentity.email, subAddressTag)
@@ -660,10 +661,7 @@ export function EmailComposer({
       : undefined;
 
     // Append signature from the selected identity
-    let finalBody = body;
+    let finalBody = appendPlainTextSignature(body, currentIdentity);
-    if (currentIdentity?.textSignature) {
-      finalBody = body + '\n\n-- \n' + currentIdentity.textSignature;
-    }
 
     // Append quoted original text for the plain text part in reply/forward
     if (replyTo && (mode === 'reply' || mode === 'replyAll' || mode === 'forward')) {
@@ -1126,6 +1124,13 @@ export function EmailComposer({
           />
         </div>
 
+        {composerSignatureHtml && (
+          <div
+            className="px-4 pb-3 text-sm leading-6 text-foreground break-words [&_a]:text-primary [&_a]:underline-offset-2 [&_a:hover]:underline"
+            dangerouslySetInnerHTML={{ __html: `<div>-- </div>${composerSignatureHtml}` }}
+          />
+        )}
+
         {/* Quoted original HTML */}
         {replyTo?.htmlBody && (mode === 'reply' || mode === 'replyAll' || mode === 'forward') && (
           <div className="border-t border-border">

components/email/email-viewer.tsx

@@ -5,6 +5,7 @@ import ReactDOM from "react-dom";
 import DOMPurify from "dompurify";
 import { Email, ContactCard, Mailbox } from "@/lib/jmap/types";
 import { EMAIL_SANITIZE_CONFIG, collapseBlockedImageContainers } from "@/lib/email-sanitization";
+import { hasMeaningfulHtmlBody } from "@/lib/signature-utils";
 import { Button } from "@/components/ui/button";
 import { Avatar } from "@/components/ui/avatar";
 import { formatFileSize, cn, buildMailboxTree, MailboxNode, formatDateTime } from "@/lib/utils";
@@ -706,7 +707,11 @@ function ContactSidebarPanel({
               <SidebarSection icon={MapPin} title="Addresses">
                 {addresses.map((a, i) => (
                   <div key={i} className="text-sm text-muted-foreground">
-                    {[a.street, a.locality, a.region, a.postcode, a.country].filter(Boolean).join(", ")}
+                    {a.full || a.fullAddress
+                      ? (a.full || a.fullAddress)
+                      : a.components && a.components.length > 0
+                        ? a.components.filter(c => c.kind !== 'separator').map(c => c.value).filter(Boolean).join(", ")
+                        : [a.street, a.locality, a.region, a.postcode, a.country].filter(Boolean).join(", ")}
                   </div>
                 ))}
               </SidebarSection>
@@ -2144,9 +2149,7 @@ export function EmailViewer({
         // Server-generated HTML from text/plain emails often lacks <br> tags, collapsing newlines.
         const hasTextBody = email.textBody?.[0]?.partId && email.bodyValues[email.textBody[0].partId];
         if (hasTextBody && htmlContent) {
-          const stripped = htmlContent.replace(/<\/?(html|head|body|meta|!doctype|!DOCTYPE|br\s*\/?)[^>]*>/gi, '').trim();
+          useHtmlVersion = hasMeaningfulHtmlBody(htmlContent);
-          const hasRichContent = /<(table|tr|td|th|img|style|link|div\s+[^>]*class|span\s+[^>]*class|font|center|blockquote|ul|ol|li|h[1-6])\b/i.test(stripped);
-          useHtmlVersion = hasRichContent;
         } else {
           useHtmlVersion = !!htmlContent;
         }

components/email/thread-conversation-view.tsx

@@ -4,6 +4,7 @@ import { useState, useEffect, useMemo } from "react";
 import DOMPurify from "dompurify";
 import { Email, ThreadGroup } from "@/lib/jmap/types";
 import { EMAIL_SANITIZE_CONFIG, collapseBlockedImageContainers } from "@/lib/email-sanitization";
+import { hasMeaningfulHtmlBody } from "@/lib/signature-utils";
 import { transformInlineStyles, transformColorForDarkMode, transformBgColorForDarkMode } from "@/lib/color-transform";
 import { useThemeStore } from "@/stores/theme-store";
 import { Avatar } from "@/components/ui/avatar";
@@ -320,9 +321,7 @@ function EmailCard({
         // Server-generated HTML from text/plain emails often lacks <br> tags, collapsing newlines.
         const hasTextBody = email.textBody?.[0]?.partId && email.bodyValues[email.textBody[0].partId];
         if (hasTextBody && htmlContent) {
-          const stripped = htmlContent.replace(/<\/?(html|head|body|meta|!doctype|!DOCTYPE|br\s*\/?)[^>]*>/gi, '').trim();
+          useHtmlVersion = hasMeaningfulHtmlBody(htmlContent);
-          const hasRichContent = /<(table|tr|td|th|img|style|link|div\s+[^>]*class|span\s+[^>]*class|font|center|blockquote|ul|ol|li|h[1-6])\b/i.test(stripped);
-          useHtmlVersion = hasRichContent;
         } else {
           useHtmlVersion = !!htmlContent;
         }

components/settings/calendar-management-settings.tsx

@@ -153,6 +153,9 @@ export function CalendarManagementSettings() {
   const { client, serverUrl, username } = useAuthStore();
   const { calendars, updateCalendar, createCalendar, removeCalendar, clearCalendarEvents, fetchCalendars, icalSubscriptions, removeICalSubscription, refreshICalSubscription, isSubscriptionCalendar } = useCalendarStore();
 
+  const [discoveredCalDavUrls, setDiscoveredCalDavUrls] = useState<Record<string, string | null>>({});
+  const [wellKnownCalDavUrl, setWellKnownCalDavUrl] = useState<string | null>(null);
+
   const [isCreating, setIsCreating] = useState(false);
   const [editingId, setEditingId] = useState<string | null>(null);
   const [deletingId, setDeletingId] = useState<string | null>(null);
@@ -175,6 +178,60 @@ export function CalendarManagementSettings() {
     }
   }, [client, calendars.length, fetchCalendars]);
 
+  useEffect(() => {
+    if (!client || !serverUrl || !username) {
+      setDiscoveredCalDavUrls({});
+      setWellKnownCalDavUrl(null);
+      return;
+    }
+
+    const primaryKey = username;
+    const accounts = new Map<string, string[]>();
+    accounts.set(primaryKey, [username]);
+
+    for (const calendar of calendars) {
+      if (!calendar.isShared) continue;
+      const key = calendar.accountId || calendar.accountName || calendar.id;
+      const candidates = accounts.get(key) || [];
+      if (calendar.accountId) candidates.push(calendar.accountId);
+      if (calendar.accountName) candidates.push(calendar.accountName);
+      accounts.set(key, candidates);
+    }
+
+    const controller = new AbortController();
+
+    fetch('/api/caldav/discover', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        accounts: Array.from(accounts.entries()).map(([key, candidates]) => ({ key, candidates })),
+      }),
+      signal: controller.signal,
+    })
+      .then(async (response) => {
+        if (!response.ok) throw new Error(`CalDAV discovery failed: ${response.status}`);
+        return response.json() as Promise<{
+          wellKnownUrl?: string;
+          accounts?: Record<string, { url: string | null }>;
+        }>;
+      })
+      .then((payload) => {
+        setWellKnownCalDavUrl(payload.wellKnownUrl || null);
+        const next: Record<string, string | null> = {};
+        for (const [key, value] of Object.entries(payload.accounts || {})) {
+          next[key] = value?.url || null;
+        }
+        setDiscoveredCalDavUrls(next);
+      })
+      .catch(() => {
+        const fallbackWellKnown = new URL('/.well-known/caldav', serverUrl).toString();
+        setDiscoveredCalDavUrls({});
+        setWellKnownCalDavUrl(fallbackWellKnown);
+      });
+
+    return () => controller.abort();
+  }, [client, calendars, serverUrl, username]);
+
   const handleRefreshSubscription = async (subId: string) => {
     if (!client) return;
     setRefreshingSubId(subId);
@@ -295,8 +352,10 @@ export function CalendarManagementSettings() {
 
   const buildCalDavUrl = (calendarId: string) => {
     if (!serverUrl || !username) return null;
-    const base = serverUrl.replace(/\/$/, '');
+    const calendar = calendars.find((entry) => entry.id === calendarId);
-    return `${base}/dav/cal/${encodeURIComponent(username)}/${encodeURIComponent(calendarId)}/`;
+    if (!calendar) return null;
+    const accountKey = calendar.isShared ? (calendar.accountId || calendar.accountName || calendar.id) : username;
+    return discoveredCalDavUrls[accountKey] || wellKnownCalDavUrl;
   };
 
   const handleCopyUrl = async (url: string) => {

components/settings/folder-settings.tsx

@@ -490,21 +490,34 @@ export function FolderSettings() {
 
       {/* Standard Folder Roles — advanced section */}
       <SettingsSection title={t('standard_roles')} description={t('standard_roles_description')}>
-        {STANDARD_ROLES.map((role) => (
+        {STANDARD_ROLES.map((role) => {
-          <SettingItem key={role} label={t(`role_${role}`)}>
+          // Disambiguate duplicate folder names by appending parent path
-            <Select
+          const nameCounts = new Map<string, number>();
-              value={getRoleMailboxId(role)}
+          ownMailboxes.forEach(mb => nameCounts.set(mb.name, (nameCounts.get(mb.name) || 0) + 1));
-              onChange={(value) => handleRoleChange(role, value)}
+          const getParentPath = (mb: { parentId?: string; name: string }) => {
-              options={[
+            if (!mb.parentId) return '';
-                { value: '', label: t('role_none') },
+            const parent = ownMailboxes.find(p => p.id === mb.parentId);
-                ...ownMailboxes.map(mb => ({
+            return parent ? `${parent.name}/` : '';
-                  value: mb.id,
+          };
-                  label: mb.name,
+
-                })),
+          return (
-              ]}
+            <SettingItem key={role} label={t(`role_${role}`)}>
-            />
+              <Select
-          </SettingItem>
+                value={getRoleMailboxId(role)}
-        ))}
+                onChange={(value) => handleRoleChange(role, value)}
+                options={[
+                  { value: '', label: t('role_none') },
+                  ...ownMailboxes.map(mb => ({
+                    value: mb.id,
+                    label: (nameCounts.get(mb.name) || 0) > 1
+                      ? `${getParentPath(mb)}${mb.name} (${mb.id.slice(-6)})`
+                      : mb.name,
+                  })),
+                ]}
+              />
+            </SettingItem>
+          );
+        })}
       </SettingsSection>
     </div>
   );

eslint.config.mjs

@@ -70,6 +70,7 @@ export default [
       "*.config.js",
       "*.config.mjs",
       "e2e/**",
+      "local-data/**/*.mjs",
     ],
   },
 ];

lib/__tests__/signature-utils.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  appendPlainTextSignature,
+  getPlainTextSignature,
+  hasMeaningfulHtmlBody,
+} from '../signature-utils';
+
+describe('signature-utils', () => {
+  describe('getPlainTextSignature', () => {
+    it('prefers text signatures when present', () => {
+      expect(getPlainTextSignature({ textSignature: 'Regards,\nAlice', htmlSignature: '<p>Ignored</p>' })).toBe('Regards,\nAlice');
+    });
+
+    it('converts html-only signatures into plain text', () => {
+      expect(getPlainTextSignature({ htmlSignature: '<p>Alice Example<br><a href="mailto:alice@example.com">alice@example.com</a></p>' })).toBe('Alice Example\nalice@example.com');
+    });
+  });
+
+  describe('appendPlainTextSignature', () => {
+    it('appends a converted html signature to the text body', () => {
+      expect(appendPlainTextSignature('Hello there', { htmlSignature: '<p>Alice<br>Engineering</p>' })).toBe('Hello there\n\n-- \nAlice\nEngineering');
+    });
+
+    it('leaves the body untouched when no signature exists', () => {
+      expect(appendPlainTextSignature('Hello there', {})).toBe('Hello there');
+    });
+  });
+
+  describe('hasMeaningfulHtmlBody', () => {
+    it('prefers html bodies that preserve signature formatting', () => {
+      expect(hasMeaningfulHtmlBody('<div>Hello</div><br><p>Alice</p>')).toBe(true);
+    });
+
+    it('ignores minimal wrapper html with a single block', () => {
+      expect(hasMeaningfulHtmlBody('<div>Hello world</div>')).toBe(false);
+    });
+  });
+});

lib/browser-navigation.ts

@@ -0,0 +1,7 @@
+export function replaceWindowLocation(url: string): void {
+  if (typeof window === 'undefined') {
+    return;
+  }
+
+  window.location.replace(url);
+}

lib/calendar-utils.ts

@@ -142,3 +142,7 @@ export function formatSnapTime(minutes: number, timeFormat: "12h" | "24h"): stri
   }
   return `${String(h).padStart(2, "0")}:${String(m).padStart(2, "0")}`;
 }
+
+export function getPrimaryCalendarId(event: Pick<CalendarEvent, 'calendarIds'>): string | undefined {
+  return Object.keys(event.calendarIds || {})[0];
+}

lib/jmap/types.ts

@@ -252,7 +252,20 @@ export interface ContactTitle {
   organizationId?: string;
 }
 
+// RFC 9553 AddressComponent
+export interface AddressComponent {
+  kind: 'room' | 'apartment' | 'floor' | 'building' | 'number' | 'name' | 'block' | 'subDistrict' | 'district' | 'locality' | 'region' | 'postcode' | 'country' | 'direction' | 'landmark' | 'postOfficeBox' | 'separator' | string;
+  value: string;
+  phonetic?: string;
+}
+
 export interface ContactAddress {
+  // RFC 9553 format
+  components?: AddressComponent[];
+  full?: string;
+  isOrdered?: boolean;
+  defaultSeparator?: string;
+  // Legacy flat fields (from vCard import)
   street?: string;
   locality?: string;
   region?: string;
@@ -284,9 +297,27 @@ export interface ContactMedia {
   mediaType?: string;
 }
 
+// RFC 9553 PartialDate
+export interface PartialDate {
+  '@type'?: 'PartialDate';
+  year?: number;
+  month?: number;
+  day?: number;
+  calendarScale?: string;
+}
+
+// RFC 9553 Timestamp
+export interface Timestamp {
+  '@type': 'Timestamp';
+  utc: string;
+}
+
+export type AnniversaryDate = string | PartialDate | Timestamp;
+
 export interface ContactAnniversary {
+  '@type'?: 'Anniversary';
   kind: 'birth' | 'death' | 'wedding' | 'other';
-  date: string;
+  date: AnniversaryDate;
   place?: ContactAddress;
 }
 

lib/signature-utils.ts

@@ -0,0 +1,158 @@
+import { parseHtmlSafely, sanitizeSignatureHtml } from '@/lib/email-sanitization';
+
+type SignatureSource = {
+  textSignature?: string;
+  htmlSignature?: string;
+};
+
+const BLOCK_TAGS = new Set([
+  'address',
+  'article',
+  'aside',
+  'blockquote',
+  'div',
+  'footer',
+  'header',
+  'li',
+  'nav',
+  'p',
+  'section',
+  'tr',
+]);
+
+function normalizeSignatureLineBreaks(value: string): string {
+  return value
+    .replace(/\r\n?/g, '\n')
+    .replace(/\u00a0/g, ' ')
+    .replace(/[ \t]+\n/g, '\n')
+    .replace(/\n{3,}/g, '\n\n')
+    .trim();
+}
+
+function htmlToPlainText(html: string): string {
+  const document = parseHtmlSafely(html);
+  const chunks: string[] = [];
+
+  const appendText = (value: string) => {
+    if (!value) return;
+    const normalized = value.replace(/\s+/g, ' ');
+    if (!normalized.trim()) return;
+    const previous = chunks[chunks.length - 1];
+    if (previous && !previous.endsWith('\n') && !previous.endsWith(' ')) {
+      chunks.push(' ');
+    }
+    chunks.push(normalized);
+  };
+
+  const appendNewline = () => {
+    const previous = chunks[chunks.length - 1];
+    if (previous === '\n') return;
+    if (previous?.endsWith('\n')) return;
+    chunks.push('\n');
+  };
+
+  const walk = (node: Node) => {
+    if (node.nodeType === Node.TEXT_NODE) {
+      appendText(node.textContent || '');
+      return;
+    }
+
+    if (node.nodeType !== Node.ELEMENT_NODE) {
+      return;
+    }
+
+    const element = node as HTMLElement;
+    const tagName = element.tagName.toLowerCase();
+
+    if (tagName === 'br') {
+      appendNewline();
+      return;
+    }
+
+    if (tagName === 'a') {
+      const text = element.textContent?.replace(/\s+/g, ' ').trim() || '';
+      const href = element.getAttribute('href')?.trim() || '';
+      const normalizedHref = href.replace(/^mailto:/i, '');
+      if (text && normalizedHref && text === normalizedHref) {
+        appendText(text);
+        return;
+      }
+      if (text && href && text !== href) {
+        appendText(`${text} <${href}>`);
+        return;
+      }
+    }
+
+    if (BLOCK_TAGS.has(tagName) && chunks.length > 0) {
+      appendNewline();
+    }
+
+    Array.from(element.childNodes).forEach(walk);
+
+    if (BLOCK_TAGS.has(tagName)) {
+      appendNewline();
+    }
+  };
+
+  Array.from(document.body.childNodes).forEach(walk);
+  return normalizeSignatureLineBreaks(chunks.join(''));
+}
+
+export function getPlainTextSignature(signature?: SignatureSource | null): string {
+  if (signature?.textSignature?.trim()) {
+    return normalizeSignatureLineBreaks(signature.textSignature);
+  }
+
+  if (signature?.htmlSignature?.trim()) {
+    return htmlToPlainText(sanitizeSignatureHtml(signature.htmlSignature));
+  }
+
+  return '';
+}
+
+export function appendPlainTextSignature(body: string, signature?: SignatureSource | null): string {
+  const plainTextSignature = getPlainTextSignature(signature);
+  if (!plainTextSignature) {
+    return body;
+  }
+
+  return `${body}\n\n-- \n${plainTextSignature}`;
+}
+
+export function hasMeaningfulHtmlBody(html: string): boolean {
+  if (!html.trim()) return false;
+
+  const document = parseHtmlSafely(html);
+  const richSelector = [
+    'table',
+    'img',
+    'style',
+    'b',
+    'strong',
+    'i',
+    'em',
+    'u',
+    'font',
+    'a[href]',
+    'div[style]',
+    'span[style]',
+    'p[style]',
+    'h1',
+    'h2',
+    'h3',
+    'h4',
+    'h5',
+    'h6',
+    'ul',
+    'ol',
+    'blockquote',
+    'br',
+  ].join(', ');
+
+  if (document.querySelector(richSelector)) {
+    return true;
+  }
+
+  const blockElements = document.body.querySelectorAll('p, div, blockquote, li');
+  return blockElements.length > 1;
+}

lib/utils.ts

@@ -97,17 +97,19 @@ const ROLE_PRIORITY: Record<string, number> = {
 
 // Deduplicate mailboxes (e.g., "Sent" vs "Sent Mail")
 function deduplicateMailboxes(mailboxes: Mailbox[]): Mailbox[] {
-  const roleMap = new Map<string, Mailbox>();
   const result: Mailbox[] = [];
 
-  // First pass: collect mailboxes with roles
+  // Group role mailboxes by account so deduplication is scoped per-account
+  const rolesByAccount = new Map<string, Mailbox[]>();
   mailboxes.forEach(mb => {
     if (mb.role) {
-      roleMap.set(mb.role, mb);
+      const key = mb.accountId || '';
+      if (!rolesByAccount.has(key)) rolesByAccount.set(key, []);
+      rolesByAccount.get(key)!.push(mb);
     }
   });
 
-  // Second pass: filter out duplicates
+  // Filter out duplicates scoped to the same account
   mailboxes.forEach(mb => {
     // If this mailbox has a role, always keep it
     if (mb.role) {
@@ -115,9 +117,11 @@ function deduplicateMailboxes(mailboxes: Mailbox[]): Mailbox[] {
       return;
     }
 
-    // Check if this is a duplicate of a role-based mailbox
+    // Check if this is a duplicate of a role-based mailbox in the SAME account
+    const accountKey = mb.accountId || '';
+    const accountRoles = rolesByAccount.get(accountKey) || [];
     const lowerName = mb.name.toLowerCase();
-    const isDuplicate = Array.from(roleMap.values()).some(roleMb => {
+    const isDuplicate = accountRoles.some(roleMb => {
       const roleLowerName = roleMb.name.toLowerCase();
       // Check for common duplicates: "Sent Mail" vs "Sent", etc.
       return lowerName.includes(roleLowerName) || roleLowerName.includes(lowerName);

lib/vcard.ts

@@ -1,4 +1,26 @@
-import type { ContactCard, NameComponent, ContactMedia, ContactOnlineService } from "@/lib/jmap/types";
+import type { ContactCard, NameComponent, ContactMedia, ContactOnlineService, AnniversaryDate, PartialDate } from "@/lib/jmap/types";
+
+// Convert RFC 9553 AnniversaryDate (PartialDate|Timestamp|string) to vCard date string
+function anniversaryDateToVcardString(date: AnniversaryDate): string {
+  if (typeof date === 'string') return date;
+  if (date && typeof date === 'object') {
+    if ('@type' in date && date['@type'] === 'Timestamp' && 'utc' in date) {
+      return (date as { utc: string }).utc.split('T')[0];
+    }
+    const pd = date as PartialDate;
+    if (pd.year && pd.month && pd.day) {
+      return `${String(pd.year).padStart(4, '0')}-${String(pd.month).padStart(2, '0')}-${String(pd.day).padStart(2, '0')}`;
+    }
+    if (pd.month && pd.day) {
+      return `--${String(pd.month).padStart(2, '0')}-${String(pd.day).padStart(2, '0')}`;
+    }
+    if (pd.year && pd.month) {
+      return `${String(pd.year).padStart(4, '0')}-${String(pd.month).padStart(2, '0')}`;
+    }
+    if (pd.year) return String(pd.year);
+  }
+  return String(date);
+}
 
 const VCARD_SEX_TO_GENDER: Record<string, string> = {
   M: "masculine",
@@ -598,14 +620,30 @@ function generateSingleVCard(contact: ContactCard): string {
     for (const addr of Object.values(contact.addresses)) {
       const type = contextToType(addr.contexts);
       const typeParam = type ? `;TYPE=${type}` : "";
+      let street = addr.street || "";
+      let locality = addr.locality || "";
+      let region = addr.region || "";
+      let postcode = addr.postcode || "";
+      let country = addr.country || "";
+      // RFC 9553 components-based address: extract flat fields for vCard ADR
+      if (addr.components && addr.components.length > 0) {
+        const findComp = (kind: string) => addr.components!.filter(c => c.kind === kind).map(c => c.value).join(' ');
+        const number = findComp('number');
+        const name = findComp('name');
+        street = street || [number, name].filter(Boolean).join(' ');
+        locality = locality || findComp('locality');
+        region = region || findComp('region');
+        postcode = postcode || findComp('postcode');
+        country = country || findComp('country');
+      }
       const parts = [
         "",
         "",
-        addr.street || "",
+        street,
-        addr.locality || "",
+        locality,
-        addr.region || "",
+        region,
-        addr.postcode || "",
+        postcode,
-        addr.country || "",
+        country,
       ];
       lines.push(`ADR${typeParam}:${parts.map(encodeValue).join(";")}`);
     }
@@ -613,12 +651,13 @@ function generateSingleVCard(contact: ContactCard): string {
 
   if (contact.anniversaries) {
     for (const ann of Object.values(contact.anniversaries)) {
+      const dateStr = anniversaryDateToVcardString(ann.date);
       if (ann.kind === "birth") {
-        lines.push(`BDAY:${ann.date}`);
+        lines.push(`BDAY:${dateStr}`);
       } else if (ann.kind === "wedding") {
-        lines.push(`ANNIVERSARY:${ann.date}`);
+        lines.push(`ANNIVERSARY:${dateStr}`);
       } else if (ann.kind === "death") {
-        lines.push(`DEATHDATE:${ann.date}`);
+        lines.push(`DEATHDATE:${dateStr}`);
       }
     }
   }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bulwark-webmail",
-  "version": "1.4.3",
+  "version": "1.4.4",
   "description": "Bulwark Webmail — a modern webmail client built for Stalwart Mail Server",
   "author": "Bulwark Webmail <bulwark@rbm.systems>",
   "license": "AGPL-3.0-only",

stores/__tests__/auth-store-logout.test.ts

@@ -0,0 +1,97 @@
+import { beforeEach, afterEach, describe, expect, it, vi } from 'vitest';
+import * as browserNavigation from '@/lib/browser-navigation';
+import { useAuthStore } from '../auth-store';
+import { useAccountStore } from '../account-store';
+
+type FetchInput = Parameters<typeof fetch>[0];
+type FetchInit = Parameters<typeof fetch>[1];
+
+describe('auth-store logout redirects', () => {
+  beforeEach(() => {
+    vi.restoreAllMocks();
+    sessionStorage.clear();
+    localStorage.clear();
+    window.history.pushState({}, '', '/en');
+
+    useAccountStore.setState({
+      accounts: [],
+      activeAccountId: null,
+      defaultAccountId: null,
+    });
+
+    useAuthStore.setState({
+      isAuthenticated: false,
+      isLoading: false,
+      error: null,
+      serverUrl: null,
+      username: null,
+      client: null,
+      identities: [],
+      primaryIdentity: null,
+      authMode: 'basic',
+      rememberMe: false,
+      accessToken: null,
+      tokenExpiresAt: null,
+      connectionLost: false,
+      activeAccountId: null,
+    });
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+  });
+
+  it('redirects full logout to the locale login page', () => {
+    const fetchMock = vi.fn().mockResolvedValue({ ok: true, json: async () => ({}) });
+    vi.stubGlobal('fetch', fetchMock);
+    const replaceSpy = vi.spyOn(browserNavigation, 'replaceWindowLocation').mockImplementation(() => {});
+
+    window.history.pushState({}, '', '/fr/calendar');
+    useAuthStore.setState({ isAuthenticated: true, authMode: 'basic' });
+
+    useAuthStore.getState().logout();
+
+    expect(replaceSpy).toHaveBeenCalledWith('/fr/login');
+    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 () => {
+    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, json: async () => ({}) };
+      }
+
+      if (url === '/api/auth/token?slot=0' && method === 'DELETE') {
+        return { ok: true, json: async () => ({}) };
+      }
+
+      if (url === '/api/auth/session?slot=0' && method === 'DELETE') {
+        return { ok: true, json: async () => ({}) };
+      }
+
+      throw new Error(`Unexpected fetch call: ${method} ${url}`);
+    });
+
+    vi.stubGlobal('fetch', fetchMock);
+    const replaceSpy = vi.spyOn(browserNavigation, 'replaceWindowLocation').mockImplementation(() => {});
+
+    window.history.pushState({}, '', '/en/calendar?view=day');
+    useAuthStore.setState({
+      isAuthenticated: true,
+      authMode: 'oauth',
+      activeAccountId: null,
+    });
+
+    await useAuthStore.getState().refreshAccessToken();
+    await vi.runAllTimersAsync();
+
+    expect(sessionStorage.getItem('session_expired')).toBe('true');
+    expect(sessionStorage.getItem('redirect_after_login')).toBe('/en/calendar?view=day');
+    expect(replaceSpy).toHaveBeenCalledWith('/en/login');
+  });
+});

stores/__tests__/folder-management.test.ts

@@ -226,6 +226,34 @@ describe('email-store folder management', () => {
       expect(client.updateMailbox).toHaveBeenCalledWith('trash-1', { role: 'trash' });
     });
 
+    it('should clear role from ALL mailboxes with that role when reassigning', async () => {
+      // Simulate server anomaly: two mailboxes with role "trash"
+      const extraTrash = makeMailbox({ id: 'trash-2', name: 'Deleted Items', role: 'trash' });
+      useEmailStore.setState({
+        mailboxes: [inbox, sent, trash, custom, extraTrash],
+      });
+
+      const newMailboxes = [inbox, sent, custom,
+        makeMailbox({ id: 'trash-1', name: 'Trash', role: undefined }),
+        makeMailbox({ id: 'trash-2', name: 'Deleted Items', role: undefined }),
+      ];
+      // custom-1 gets the trash role
+      newMailboxes[2] = { ...newMailboxes[2], role: 'trash' };
+
+      const client = makeMockClient({
+        getAllMailboxes: vi.fn().mockResolvedValue(newMailboxes),
+      });
+
+      await useEmailStore.getState().setMailboxRole(client, 'custom-1', 'trash');
+
+      // Should clear trash role from BOTH trash-1 and trash-2
+      expect(client.updateMailbox).toHaveBeenCalledWith('trash-1', { role: null });
+      expect(client.updateMailbox).toHaveBeenCalledWith('trash-2', { role: null });
+      // Then set trash role on custom-1
+      expect(client.updateMailbox).toHaveBeenCalledWith('custom-1', { role: 'trash' });
+      expect(client.updateMailbox).toHaveBeenCalledTimes(3);
+    });
+
     it('should set error on failure', async () => {
       const client = makeMockClient({
         updateMailbox: vi.fn().mockRejectedValue(new Error('Role update failed')),

stores/account-store.ts

@@ -58,13 +58,30 @@ export const useAccountStore = create<AccountState>()(
 
       addAccount: (entry) => {
         const state = get();
-        if (state.accounts.length >= MAX_ACCOUNTS) {
-          throw new Error(`Maximum of ${MAX_ACCOUNTS} accounts reached`);
-        }
 
         const id = generateAccountId(entry.username, entry.serverUrl);
         if (state.accounts.some((a) => a.id === id)) {
-          return id; // already exists, return existing id
+          // Already exists — update mutable fields and return existing id
+          set((s) => ({
+            accounts: s.accounts.map((a) =>
+              a.id === id
+                ? {
+                    ...a,
+                    rememberMe: entry.rememberMe,
+                    isConnected: entry.isConnected,
+                    hasError: entry.hasError,
+                    errorMessage: undefined,
+                    lastLoginAt: entry.lastLoginAt,
+                    authMode: entry.authMode,
+                  }
+                : a
+            ),
+          }));
+          return id;
+        }
+
+        if (state.accounts.length >= MAX_ACCOUNTS) {
+          throw new Error(`Maximum of ${MAX_ACCOUNTS} accounts reached`);
         }
 
         const cookieSlot = state.getNextCookieSlot();

stores/auth-store.ts

@@ -11,6 +11,7 @@ import { useAccountStore } from './account-store';
 import { fetchConfig } from '@/hooks/use-config';
 import { debug } from '@/lib/debug';
 import { generateAccountId } from '@/lib/account-utils';
+import { replaceWindowLocation } from '@/lib/browser-navigation';
 import { snapshotAccount, restoreAccount, clearAllStores, evictAccount, evictAll } from '@/lib/account-state-manager';
 import type { Identity } from '@/lib/jmap/types';
 
@@ -98,8 +99,45 @@ function loadIdentities(rawIdentities: Identity[], username: string): { identiti
   return { identities, primaryIdentity };
 }
 
+function getLocaleLoginPath(): string {
+  if (typeof window === 'undefined') return '/en/login';
+
+  const segments = window.location.pathname.split('/').filter(Boolean);
+  const locale = segments[0] || 'en';
+  return `/${locale}/login`;
+}
+
+function saveRedirectAfterLogin(): void {
+  if (typeof window === 'undefined') return;
+
+  try {
+    const loginPath = getLocaleLoginPath();
+    const currentPath = `${window.location.pathname}${window.location.search}${window.location.hash}`;
+
+    if (currentPath !== loginPath) {
+      sessionStorage.setItem('redirect_after_login', currentPath);
+    }
+  } catch {
+    /* noop */
+  }
+}
+
+function redirectToLogin(): void {
+  if (typeof window === 'undefined') return;
+
+  const loginPath = getLocaleLoginPath();
+  if (window.location.pathname === loginPath) return;
+  replaceWindowLocation(loginPath);
+}
+
 function markSessionExpired(): void {
-  try { sessionStorage.setItem('session_expired', 'true'); } catch { /* noop */ }
+  try {
+    sessionStorage.setItem('session_expired', 'true');
+  } catch {
+    /* noop */
+  }
+
+  saveRedirectAfterLogin();
 }
 
 function initializeFeatureStores(client: JMAPClient): void {
@@ -250,6 +288,33 @@ export const useAuthStore = create<AuthState>()(
           });
           accountStore.setActiveAccount(accountId);
 
+          // Update account entry in case it already existed (addAccount is a no-op for existing accounts)
+          accountStore.updateAccount(accountId, {
+            rememberMe: !!rememberMe,
+            isConnected: true,
+            hasError: false,
+            errorMessage: undefined,
+            lastLoginAt: Date.now(),
+          });
+
+          // Store session cookie BEFORE setting isAuthenticated to avoid a race
+          // condition: setting isAuthenticated triggers navigation to the main page,
+          // whose checkAuth() would try to read the cookie before it was stored.
+          if (rememberMe) {
+            try {
+              const res = await fetch(`/api/auth/session?slot=${cookieSlot}`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ serverUrl, username, password: effectivePassword, slot: cookieSlot }),
+              });
+              if (!res.ok) {
+                debug.error('Failed to store session: server returned', res.status);
+              }
+            } catch (err) {
+              debug.error('Failed to store session:', err);
+            }
+          }
+
           set({
             isAuthenticated: true,
             isLoading: false,
@@ -259,6 +324,7 @@ export const useAuthStore = create<AuthState>()(
             identities,
             primaryIdentity,
             authMode: 'basic',
+            rememberMe: !!rememberMe,
             accessToken: null,
             tokenExpiresAt: null,
             connectionLost: false,
@@ -274,23 +340,6 @@ export const useAuthStore = create<AuthState>()(
             });
           }).catch(() => {});
 
-          if (rememberMe) {
-            try {
-              const res = await fetch(`/api/auth/session?slot=${cookieSlot}`, {
-                method: 'POST',
-                headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ serverUrl, username, password: effectivePassword, slot: cookieSlot }),
-              });
-              if (res.ok) {
-                set({ rememberMe: true });
-              } else {
-                debug.error('Failed to store session: server returned', res.status);
-              }
-            } catch (err) {
-              debug.error('Failed to store session:', err);
-            }
-          }
-
           return true;
         } catch (error) {
           debug.error('Login error:', error);
@@ -479,6 +528,7 @@ export const useAuthStore = create<AuthState>()(
 
         // Check if there are remaining accounts to switch to
         const remainingAccounts = accountStore.accounts;
+        const shouldRedirectToLogin = remainingAccounts.length === 0;
         if (remainingAccounts.length > 0) {
           // Switch to the next account
           const nextAccount = remainingAccounts[0];
@@ -498,6 +548,7 @@ export const useAuthStore = create<AuthState>()(
               username: nextAccount.username,
               client: nextClient,
               authMode: nextAccount.authMode,
+              rememberMe: nextAccount.rememberMe,
               connectionLost: false,
               error: null,
               activeAccountId: nextAccount.id,
@@ -540,28 +591,51 @@ export const useAuthStore = create<AuthState>()(
         }
 
         // Clean up cookies for the removed account
-        fetch(`/api/auth/session?slot=${slot}`, { method: 'DELETE' }).catch((err) => {
+        fetch(`/api/auth/session?slot=${slot}`, { method: 'DELETE', keepalive: shouldRedirectToLogin }).catch((err) => {
           debug.error('Failed to clear session cookie:', err);
         });
 
-        if (wasOAuth) {
+        if (wasOAuth && shouldRedirectToLogin) {
-          fetch(`/api/auth/token?slot=${slot}`, { method: 'DELETE' })
+          let redirectCommitted = false;
+          const commitLoginRedirect = () => {
+            if (redirectCommitted) return;
+            redirectCommitted = true;
+            redirectToLogin();
+          };
+
+          window.setTimeout(commitLoginRedirect, 0);
+
+          fetch(`/api/auth/token?slot=${slot}`, { method: 'DELETE', keepalive: true })
             .then((res) => {
               if (!res.ok) throw new Error(`Revocation failed: ${res.status}`);
               return res.json();
             })
             .then((data) => {
-              if (data.end_session_url && remainingAccounts.length === 0) {
+              if (redirectCommitted) return;
+
+              if (data.end_session_url) {
+                redirectCommitted = true;
                 const locale = window.location.pathname.split('/')[1] || 'en';
                 const redirectUri = `${window.location.origin}/${locale}/login`;
                 const url = new URL(data.end_session_url);
                 url.searchParams.set('post_logout_redirect_uri', redirectUri);
-                window.location.href = url.toString();
+                replaceWindowLocation(url.toString());
+                return;
               }
+
+              commitLoginRedirect();
             })
             .catch((err) => {
               debug.error('OAuth logout cleanup failed:', err);
+              commitLoginRedirect();
             });
+        } else if (wasOAuth) {
+          fetch(`/api/auth/token?slot=${slot}`, { method: 'DELETE', keepalive: false })
+            .catch((err) => {
+              debug.error('OAuth logout cleanup failed:', err);
+            });
+        } else if (shouldRedirectToLogin) {
+          redirectToLogin();
         }
       },
 
@@ -604,8 +678,9 @@ export const useAuthStore = create<AuthState>()(
         }
 
         // Delete all cookies
-        fetch('/api/auth/session?all=true', { method: 'DELETE' }).catch(() => {});
+        fetch('/api/auth/session?all=true', { method: 'DELETE', keepalive: true }).catch(() => {});
-        fetch('/api/auth/token?all=true', { method: 'DELETE' }).catch(() => {});
+        fetch('/api/auth/token?all=true', { method: 'DELETE', keepalive: true }).catch(() => {});
+        redirectToLogin();
       },
 
       switchAccount: async (accountId: string) => {
@@ -677,6 +752,11 @@ export const useAuthStore = create<AuthState>()(
         }
 
         if (!targetClient) {
+          accountStore.updateAccount(accountId, {
+            isConnected: false,
+            hasError: true,
+            errorMessage: 'Unable to restore session',
+          });
           set({ isLoading: false });
           return;
         }
@@ -693,6 +773,7 @@ export const useAuthStore = create<AuthState>()(
           username: targetAccount.username,
           client: targetClient,
           authMode: targetAccount.authMode,
+          rememberMe: targetAccount.rememberMe,
           connectionLost: false,
           error: null,
           activeAccountId: accountId,
@@ -809,6 +890,7 @@ export const useAuthStore = create<AuthState>()(
               identities,
               primaryIdentity,
               authMode: targetAccount.authMode,
+              rememberMe: targetAccount.rememberMe,
               connectionLost: false,
               error: null,
               activeAccountId: targetId,
@@ -840,6 +922,7 @@ export const useAuthStore = create<AuthState>()(
                 identities,
                 primaryIdentity,
                 authMode: acc.authMode,
+                rememberMe: acc.rememberMe,
                 connectionLost: false,
                 error: null,
                 activeAccountId: id,

stores/calendar-store.ts

@@ -142,13 +142,6 @@ export const useCalendarStore = create<CalendarStore>()(
           }
           const created = await client.createCalendarEvent(cleanEvent, sendSchedulingMessages, targetAccountId);
           set((state) => ({ events: [...state.events, created] }));
-          if (sendSchedulingMessages && created.participants) {
-            try {
-              await client.sendImipInvitation(created);
-            } catch (e) {
-              debug.error('Failed to send invitation emails:', e);
-            }
-          }
           return created;
         } catch (error) {
           debug.error('Failed to create event:', error);
@@ -178,16 +171,6 @@ export const useCalendarStore = create<CalendarStore>()(
           set((state) => ({
             events: state.events.map(e => e.id === id ? { ...e, ...updates } : e),
           }));
-          if (sendSchedulingMessages) {
-            try {
-              const updatedEvent = await client.getCalendarEvent(realId, targetAccountId);
-              if (updatedEvent?.participants) {
-                await client.sendImipInvitation(updatedEvent);
-              }
-            } catch (e) {
-              debug.error('Failed to send update notification emails:', e);
-            }
-          }
         } catch (error) {
           debug.error('Failed to update event:', error);
           set({ error: 'Failed to update event' });

stores/email-store.ts

@@ -1298,11 +1298,11 @@ export const useEmailStore = create<EmailStore>((set, get) => ({
 
   setMailboxRole: async (client, mailboxId, role) => {
     try {
-      // If assigning a role, first clear that role from any other mailbox
+      // If assigning a role, first clear that role from ALL other mailboxes that have it
       if (role) {
-        const existingMailbox = get().mailboxes.find(mb => mb.role === role && !mb.isShared);
+        const existingMailboxes = get().mailboxes.filter(mb => mb.role === role && !mb.isShared && mb.id !== mailboxId);
-        if (existingMailbox && existingMailbox.id !== mailboxId) {
+        for (const existing of existingMailboxes) {
-          await client.updateMailbox(existingMailbox.id, { role: null });
+          await client.updateMailbox(existing.id, { role: null });
         }
       }
       await client.updateMailbox(mailboxId, { role });