diff --git a/src/components/contacts/ContactsSidebarDrawer.tsx b/src/components/contacts/ContactsSidebarDrawer.tsx
index 56339ab5..0f1b0524 100644
--- a/src/components/contacts/ContactsSidebarDrawer.tsx
+++ b/src/components/contacts/ContactsSidebarDrawer.tsx
@@ -1,17 +1,23 @@
 import React from 'react';
 import {
-  View, Text, StyleSheet, Pressable, ScrollView, Modal, Animated, Dimensions, Easing,
+  View, Text, StyleSheet, Pressable, ScrollView, Modal, Animated, Dimensions, Easing, TextInput, Alert,
 } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
+import { useNavigation } from '@react-navigation/native';
+import type { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import {
-  X, Users, Tag, BookUser, Inbox, ChevronDown, ChevronRight,
+  X, Users, Tag, BookUser, Inbox, ChevronDown, ChevronRight, Plus, Share2, Check,
 } from 'lucide-react-native';
+import type { RootStackParamList } from '../../navigation/types';
+import type { AddressBook } from '../../api/types';
 import type { ContactCategory } from '../../stores/contacts-store';
-import { useContactsStore } from '../../stores/contacts-store';
+import { useContactsStore, selectGroupMembers, selectUncategorized } from '../../stores/contacts-store';
 import { getContactDisplayName, getContactKeywords, isGroup } from '../../lib/contact-utils';
-import { spacing, radius, typography, type ThemePalette } from '../../theme/tokens';
+import { spacing, radius, typography, componentSizes, type ThemePalette } from '../../theme/tokens';
 import { useColors } from '../../theme/colors';
 
+type Nav = NativeStackNavigationProp<RootStackParamList>;
+
 interface Props {
   visible: boolean;
   onClose: () => void;
@@ -28,10 +34,12 @@ function isSameCategory(a: ContactCategory, b: ContactCategory): boolean {
 export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
+  const navigation = useNavigation<Nav>();
   const selectedCategory = useContactsStore((s) => s.selectedCategory);
   const setSelectedCategory = useContactsStore((s) => s.setSelectedCategory);
   const contacts = useContactsStore((s) => s.contacts);
   const addressBooks = useContactsStore((s) => s.addressBooks);
+  const renameKeyword = useContactsStore((s) => s.renameKeyword);
 
   const totalCount = React.useMemo(
     () => contacts.filter((c) => !isGroup(c)).length,
@@ -45,7 +53,29 @@ export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
       })),
     [addressBooks, contacts],
   );
+  const ownBooks = React.useMemo(() => books.filter((b) => !b.isShared), [books]);
+  // Books from shared / group accounts, grouped by the account they live in
+  // (the webmail's "Shared from X" sections).
+  const sharedSections = React.useMemo(() => {
+    const byAccount = new Map<string, { name: string; books: Array<AddressBook & { count: number }> }>();
+    for (const book of books) {
+      if (!book.isShared) continue;
+      const key = book.accountId || '?';
+      const entry = byAccount.get(key) ?? { name: book.accountName || key, books: [] };
+      entry.books.push(book);
+      byAccount.set(key, entry);
+    }
+    return Array.from(byAccount.entries()).map(([accountId, entry]) => ({ accountId, ...entry }));
+  }, [books]);
   const groups = React.useMemo(() => contacts.filter(isGroup), [contacts]);
+  // Count resolved members so a deleted card stops counting immediately.
+  const memberCountByGroup = React.useMemo(() => {
+    const out = new Map<string, number>();
+    for (const g of groups) {
+      out.set(g.id, selectGroupMembers({ contacts }, g.id).filter((m) => !isGroup(m)).length);
+    }
+    return out;
+  }, [groups, contacts]);
   const keywords = React.useMemo(() => {
     const counts = new Map<string, number>();
     for (const contact of contacts) {
@@ -57,12 +87,17 @@ export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
       .map(([keyword, count]) => ({ keyword, count }))
       .sort((a, b) => a.keyword.localeCompare(b.keyword));
   }, [contacts]);
+  const uncategorizedCount = React.useMemo(() => selectUncategorized(contacts).length, [contacts]);
 
   const [expanded, setExpanded] = React.useState({
     books: true,
+    shared: true,
     groups: true,
     tags: true,
   });
+  const [renaming, setRenaming] = React.useState<string | null>(null);
+  const [renameValue, setRenameValue] = React.useState('');
+  const [renameBusy, setRenameBusy] = React.useState(false);
 
   const slideX = React.useRef(new Animated.Value(-Dimensions.get('window').width)).current;
   const overlay = React.useRef(new Animated.Value(0)).current;
@@ -86,6 +121,34 @@ export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
     onClose();
   };
 
+  const commitRename = async () => {
+    const from = renaming;
+    const to = renameValue.trim();
+    if (!from || !to || renameBusy) { setRenaming(null); return; }
+    if (to === from) { setRenaming(null); return; }
+    setRenameBusy(true);
+    try {
+      await renameKeyword(from, to);
+      setRenaming(null);
+    } catch (err) {
+      Alert.alert('Rename failed', err instanceof Error ? err.message : 'Unknown error');
+    } finally {
+      setRenameBusy(false);
+    }
+  };
+
+  const renderBook = (book: AddressBook & { count: number }) => (
+    <CategoryRow
+      key={book.id}
+      icon={<BookUser size={16} color={c.textSecondary} />}
+      label={book.name}
+      count={book.count}
+      badge={book.isDefault ? 'Default' : undefined}
+      active={isSameCategory(selectedCategory, { type: 'addressBook', addressBookId: book.id })}
+      onPress={() => select({ type: 'addressBook', addressBookId: book.id })}
+    />
+  );
+
   return (
     <Modal visible={visible} transparent animationType="none" statusBarTranslucent onRequestClose={onClose}>
       <Animated.View style={[styles.overlay, { opacity: overlay }]}>
@@ -115,61 +178,101 @@ export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
               expanded={expanded.books}
               onPress={() => setExpanded((e) => ({ ...e, books: !e.books }))}
             />
-            {expanded.books && books.map((book) => (
-              <CategoryRow
-                key={book.id}
-                icon={<BookUser size={16} color={c.textSecondary} />}
-                label={book.name}
-                count={book.count}
-                active={isSameCategory(selectedCategory, { type: 'addressBook', addressBookId: book.id })}
-                onPress={() => select({ type: 'addressBook', addressBookId: book.id })}
-              />
-            ))}
-            {expanded.books && (
-              <CategoryRow
-                icon={<BookUser size={16} color={c.textMuted} />}
-                label="Uncategorized"
-                count={0}
-                active={selectedCategory.type === 'uncategorized'}
-                onPress={() => select({ type: 'uncategorized' })}
-              />
-            )}
+            {expanded.books && ownBooks.map(renderBook)}
 
-            {groups.length > 0 && (
-              <SectionHeader
-                label="Groups"
-                expanded={expanded.groups}
-                onPress={() => setExpanded((e) => ({ ...e, groups: !e.groups }))}
-              />
-            )}
+            {sharedSections.map((section) => (
+              <React.Fragment key={section.accountId}>
+                <SectionHeader
+                  label={`Shared from ${section.name}`}
+                  icon={<Share2 size={12} color={c.textMuted} />}
+                  expanded={expanded.shared}
+                  onPress={() => setExpanded((e) => ({ ...e, shared: !e.shared }))}
+                />
+                {expanded.shared && section.books.map(renderBook)}
+              </React.Fragment>
+            ))}
+
+            <SectionHeader
+              label="Groups"
+              expanded={expanded.groups}
+              onPress={() => setExpanded((e) => ({ ...e, groups: !e.groups }))}
+            />
             {expanded.groups && groups.map((g) => (
               <CategoryRow
                 key={g.id}
                 icon={<Users size={16} color={c.textSecondary} />}
                 label={getContactDisplayName(g) || 'Group'}
-                count={g.members ? Object.keys(g.members).length : 0}
+                count={memberCountByGroup.get(g.id) ?? 0}
                 active={isSameCategory(selectedCategory, { type: 'group', groupId: g.id })}
                 onPress={() => select({ type: 'group', groupId: g.id })}
               />
             ))}
-
-            {keywords.length > 0 && (
-              <SectionHeader
-                label="Tags"
-                expanded={expanded.tags}
-                onPress={() => setExpanded((e) => ({ ...e, tags: !e.tags }))}
+            {expanded.groups && (
+              <CategoryRow
+                icon={<Plus size={16} color={c.primary} />}
+                label="New group"
+                count={0}
+                active={false}
+                muted
+                onPress={() => {
+                  onClose();
+                  navigation.navigate('ContactForm', { asGroup: true });
+                }}
               />
             )}
+
+            <SectionHeader
+              label="Tags"
+              expanded={expanded.tags}
+              onPress={() => setExpanded((e) => ({ ...e, tags: !e.tags }))}
+            />
             {expanded.tags && keywords.map((kw) => (
-              <CategoryRow
-                key={kw.keyword}
-                icon={<Tag size={16} color={c.textSecondary} />}
-                label={kw.keyword}
-                count={kw.count}
-                active={isSameCategory(selectedCategory, { type: 'keyword', keyword: kw.keyword })}
-                onPress={() => select({ type: 'keyword', keyword: kw.keyword })}
-              />
+              renaming === kw.keyword ? (
+                <View key={kw.keyword} style={styles.renameRow}>
+                  <Tag size={16} color={c.textSecondary} />
+                  <TextInput
+                    style={styles.renameInput}
+                    value={renameValue}
+                    onChangeText={setRenameValue}
+                    autoFocus
+                    returnKeyType="done"
+                    onSubmitEditing={() => { void commitRename(); }}
+                    placeholderTextColor={c.textMuted}
+                  />
+                  <Pressable onPress={() => { void commitRename(); }} hitSlop={6} style={styles.renameBtn}>
+                    <Check size={16} color={c.primary} />
+                  </Pressable>
+                  <Pressable onPress={() => setRenaming(null)} hitSlop={6} style={styles.renameBtn}>
+                    <X size={16} color={c.textMuted} />
+                  </Pressable>
+                </View>
+              ) : (
+                <CategoryRow
+                  key={kw.keyword}
+                  icon={<Tag size={16} color={c.textSecondary} />}
+                  label={kw.keyword}
+                  count={kw.count}
+                  active={isSameCategory(selectedCategory, { type: 'keyword', keyword: kw.keyword })}
+                  onPress={() => select({ type: 'keyword', keyword: kw.keyword })}
+                  onLongPress={() => {
+                    setRenameValue(kw.keyword);
+                    setRenaming(kw.keyword);
+                  }}
+                />
+              )
             ))}
+            {expanded.tags && (
+              <CategoryRow
+                icon={<Tag size={16} color={c.textMuted} />}
+                label="No category"
+                count={uncategorizedCount}
+                active={selectedCategory.type === 'uncategorized'}
+                onPress={() => select({ type: 'uncategorized' })}
+              />
+            )}
+            {expanded.tags && keywords.length > 0 && (
+              <Text style={styles.hint}>Long-press a tag to rename it</Text>
+            )}
           </ScrollView>
         </SafeAreaView>
       </Animated.View>
@@ -177,7 +280,14 @@ export default function ContactsSidebarDrawer({ visible, onClose }: Props) {
   );
 }
 
-function SectionHeader({ label, expanded, onPress }: { label: string; expanded: boolean; onPress: () => void }) {
+function SectionHeader({
+  label, expanded, onPress, icon,
+}: {
+  label: string;
+  expanded: boolean;
+  onPress: () => void;
+  icon?: React.ReactNode;
+}) {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   return (
@@ -187,25 +297,30 @@ function SectionHeader({ label, expanded, onPress }: { label: string; expanded:
       ) : (
         <ChevronRight size={14} color={c.textMuted} />
       )}
-      <Text style={styles.sectionHeaderText}>{label}</Text>
+      {icon}
+      <Text style={styles.sectionHeaderText} numberOfLines={1}>{label}</Text>
     </Pressable>
   );
 }
 
 function CategoryRow({
-  icon, label, count, active, onPress,
+  icon, label, count, active, onPress, onLongPress, badge, muted,
 }: {
   icon: React.ReactNode;
   label: string;
   count: number;
   active: boolean;
   onPress: () => void;
+  onLongPress?: () => void;
+  badge?: string;
+  muted?: boolean;
 }) {
   const c = useColors();
   const styles = React.useMemo(() => makeStyles(c), [c]);
   return (
     <Pressable
       onPress={onPress}
+      onLongPress={onLongPress}
       style={({ pressed }) => [
         styles.row,
         active && styles.rowActive,
@@ -213,7 +328,13 @@ function CategoryRow({
       ]}
     >
       <View style={styles.rowIcon}>{icon}</View>
-      <Text style={[styles.rowLabel, active && styles.rowLabelActive]} numberOfLines={1}>{label}</Text>
+      <Text
+        style={[styles.rowLabel, active && styles.rowLabelActive, muted && styles.rowLabelMuted]}
+        numberOfLines={1}
+      >
+        {label}
+      </Text>
+      {!!badge && <Text style={styles.rowBadge}>{badge}</Text>}
       {count > 0 && <Text style={styles.rowCount}>{count}</Text>}
     </Pressable>
   );
@@ -261,7 +382,7 @@ function makeStyles(c: ThemePalette) {
     paddingTop: spacing.md,
     paddingBottom: 4,
   },
-  sectionHeaderText: { ...typography.bodySemibold, color: c.text },
+  sectionHeaderText: { ...typography.bodySemibold, color: c.text, flexShrink: 1 },
 
   row: {
     flexDirection: 'row',
@@ -280,6 +401,42 @@ function makeStyles(c: ThemePalette) {
   },
   rowLabel: { flex: 1, ...typography.body, color: c.text },
   rowLabelActive: { ...typography.bodySemibold, color: c.text },
+  rowLabelMuted: { color: c.primary },
+  rowBadge: {
+    ...typography.small,
+    color: c.textMuted,
+    borderWidth: 1,
+    borderColor: c.border,
+    borderRadius: radius.full,
+    paddingHorizontal: 6,
+    paddingVertical: 1,
+    marginLeft: spacing.sm,
+  },
   rowCount: { ...typography.caption, color: c.textMuted, marginLeft: spacing.sm },
+
+  renameRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: spacing.xs,
+    minHeight: 44,
+    paddingHorizontal: spacing.md,
+  },
+  renameInput: {
+    flex: 1,
+    ...typography.body,
+    color: c.text,
+    height: componentSizes.inputHeight - 6,
+    paddingHorizontal: spacing.sm,
+    borderWidth: 1,
+    borderColor: c.border,
+    borderRadius: radius.sm,
+    backgroundColor: c.background,
+  },
+  renameBtn: {
+    width: 28, height: 28,
+    alignItems: 'center', justifyContent: 'center',
+    borderRadius: radius.sm,
+  },
+  hint: { ...typography.small, color: c.textMuted, paddingHorizontal: spacing.md, paddingTop: spacing.xs },
   });
 }
diff --git a/src/screens/ContactsScreen.tsx b/src/screens/ContactsScreen.tsx
index b63c9021..69c045da 100644
--- a/src/screens/ContactsScreen.tsx
+++ b/src/screens/ContactsScreen.tsx
@@ -10,12 +10,15 @@ import {
   RefreshControl,
   ScrollView,
   Alert,
+  Share,
 } from 'react-native';
+import * as FileSystem from 'expo-file-system/legacy';
+import * as Sharing from 'expo-sharing';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { useNavigation } from '@react-navigation/native';
 import type { NativeStackNavigationProp } from '@react-navigation/native-stack';
 import {
-  Search, Plus, UserCircle, X, Menu, Trash2, Tag, FolderInput, Upload,
+  Search, Plus, UserCircle, X, Menu, Trash2, Tag, FolderInput, Upload, CheckSquare, Share2,
 } from 'lucide-react-native';
 import type { RootStackParamList } from '../navigation/types';
 import type { ContactCard } from '../api/types';
@@ -23,9 +26,11 @@ import {
   useContactsStore,
   sortContactsByDisplayName,
   selectGroupMembers,
+  selectUncategorized,
   type ContactCategory,
 } from '../stores/contacts-store';
 import { getContactDisplayName, isGroup, matchesContactSearch } from '../lib/contact-utils';
+import { contactsToVCard } from '../lib/vcard';
 import {
   ContactListRow,
   AddressBookPickerSheet,
@@ -50,8 +55,11 @@ function groupContacts(contacts: ContactCard[]): Section[] {
   const groups: Record<string, ContactCard[]> = {};
   for (const c of sorted) {
     const name = getContactDisplayName(c).trim();
-    const letter = (name[0] || '#').toUpperCase();
-    const key = /[A-Z]/.test(letter) ? letter : '#';
+    // Any letter (Ä, É, Ł, 王…) gets its own section like the webmail; only
+    // digits and symbols fall into "#". Hermes supports Unicode property escapes.
+    const first = Array.from(name)[0] || '#';
+    const letter = first.toLocaleUpperCase();
+    const key = /\p{L}/u.test(letter) ? letter : '#';
     if (!groups[key]) groups[key] = [];
     groups[key].push(c);
   }
@@ -59,7 +67,7 @@ function groupContacts(contacts: ContactCard[]): Section[] {
     .sort((a, b) => {
       if (a === '#') return 1;
       if (b === '#') return -1;
-      return a.localeCompare(b);
+      return a.localeCompare(b, undefined, { sensitivity: 'base' });
     })
     .map((title) => ({ title, data: groups[title] }));
 }
@@ -100,6 +108,7 @@ export default function ContactsScreen() {
   const moveContactsToAddressBook = useContactsStore((s) => s.moveContactsToAddressBook);
   const addKeywordToContacts = useContactsStore((s) => s.addKeywordToContacts);
   const setSelectedCategory = useContactsStore((s) => s.setSelectedCategory);
+  const getDefaultAddressBookId = useContactsStore((s) => s.getDefaultAddressBookId);
   const groupByLetter = useSettingsStore((s) => s.groupContactsByLetter);
 
   const [searchQuery, setSearchQuery] = React.useState('');
@@ -144,9 +153,8 @@ export default function ContactsScreen() {
         filtered = individuals.filter((c) => c.keywords?.[selectedCategory.keyword]);
         break;
       case 'uncategorized':
-        filtered = individuals.filter(
-          (c) => !c.addressBookIds || Object.keys(c.addressBookIds).length === 0,
-        );
+        // "No category" = contacts without a keyword, like the webmail.
+        filtered = selectUncategorized(individuals);
         break;
       default:
         filtered = individuals;
@@ -196,12 +204,49 @@ export default function ContactsScreen() {
     await bulkDelete(ids);
   };
 
+  const selectAllVisible = () => {
+    setSelection((prev) => {
+      const allSelected = visible.length > 0 && visible.every((c) => prev.has(c.id));
+      return allSelected ? new Set() : new Set(visible.map((c) => c.id));
+    });
+  };
+
+  const exportSelected = async () => {
+    const selected = contacts.filter((c) => selection.has(c.id));
+    if (selected.length === 0) return;
+    const vcf = contactsToVCard(selected);
+    try {
+      const filename = `contacts-${new Date().toISOString().slice(0, 10)}.vcf`;
+      const path = `${FileSystem.cacheDirectory}${filename}`;
+      await FileSystem.writeAsStringAsync(path, vcf);
+      if (await Sharing.isAvailableAsync()) {
+        await Sharing.shareAsync(path, {
+          mimeType: 'text/vcard',
+          UTI: 'public.vcard',
+          dialogTitle: 'Export contacts',
+        });
+      } else {
+        await Share.share({ message: vcf });
+      }
+    } catch (err) {
+      Alert.alert('Export failed', err instanceof Error ? err.message : 'Unknown error');
+    }
+  };
+
+  const openNewMenu = () => {
+    Alert.alert('Create', undefined, [
+      { text: 'New contact', onPress: () => navigation.navigate('ContactForm', {}) },
+      { text: 'New group', onPress: () => navigation.navigate('ContactForm', { asGroup: true }) },
+      { text: 'Cancel', style: 'cancel' },
+    ]);
+  };
+
   // Default target for moves/imports: the currently-viewed address book, else
-  // the first available book.
+  // the account's default book.
   const defaultBookId = React.useMemo(() => {
     if (selectedCategory.type === 'addressBook') return selectedCategory.addressBookId;
-    return addressBooks[0]?.id ?? null;
-  }, [selectedCategory, addressBooks]);
+    return getDefaultAddressBookId();
+  }, [selectedCategory, addressBooks, getDefaultAddressBookId]); // eslint-disable-line react-hooks/exhaustive-deps
 
   const handleBulkMove = async (bookId: string) => {
     const ids = Array.from(selection);
@@ -286,6 +331,20 @@ export default function ContactsScreen() {
             </Pressable>
             <Text style={styles.headerTitle}>{selection.size} selected</Text>
             <View style={styles.headerActions}>
+              <Pressable
+                onPress={selectAllVisible}
+                style={styles.headerIconBtn}
+                hitSlop={8}
+              >
+                <CheckSquare size={20} color={c.text} />
+              </Pressable>
+              <Pressable
+                onPress={() => { void exportSelected(); }}
+                style={styles.headerIconBtn}
+                hitSlop={8}
+              >
+                <Share2 size={20} color={c.text} />
+              </Pressable>
               {addressBooks.length > 0 && (
                 <Pressable
                   onPress={() => setMoveSheetOpen(true)}
@@ -335,6 +394,7 @@ export default function ContactsScreen() {
               </Pressable>
               <Pressable
                 onPress={() => navigation.navigate('ContactForm', {})}
+                onLongPress={openNewMenu}
                 style={styles.addBtn}
                 hitSlop={8}
               >