diff --git a/Sources/Shared/Models/AppModel.swift b/Sources/Shared/Models/AppModel.swift
index dc822c8..26ce1a8 100644
--- a/Sources/Shared/Models/AppModel.swift
+++ b/Sources/Shared/Models/AppModel.swift
@@ -26,6 +26,7 @@ enum RuntimeEnvironment {
 @MainActor
 final class AppModel: ObservableObject {
     @Published private(set) var account: AccountConfiguration?
+    @Published private(set) var accounts: [AccountConfiguration] = []
     @Published private(set) var connectionStatus: XMPPService.ConnectionStatus = .disconnected(
         reason: nil)
     private(set) var conversations: [Conversation] = [] {
@@ -351,7 +352,10 @@ final class AppModel: ObservableObject {
         guard !RuntimeEnvironment.isRunningTests,
             !RuntimeEnvironment.isRunningPreviews
         else { return }
-        guard let saved = preferences.load() else { return }
+        let configured = preferences.loadAccounts()
+        accounts = configured
+        if !configured.isEmpty { try? preferences.saveAccounts(configured) }
+        guard let saved = preferences.load() ?? configured.first else { return }
         prepareStore(for: saved.normalizedJID)
         account = saved
         globalEncryptionEnabled = preferences.encryptionEnabled(for: saved.normalizedJID)
@@ -432,7 +436,9 @@ final class AppModel: ObservableObject {
                 mamCheckpoints: mamCheckpoints
             )
             try credentials.save(password: password, for: account.normalizedJID)
+            accounts = accounts.filter { $0.normalizedJID != account.normalizedJID } + [account]
             try preferences.save(account)
+            try preferences.saveAccounts(accounts)
             await notifications.requestAuthorization()
         } catch {
             await xmpp.disconnect()
@@ -450,7 +456,10 @@ final class AppModel: ObservableObject {
     func signOut(forgetHistory: Bool = false) async {
         let oldAccount = account
         await xmpp.disconnect()
-        preferences.clear()
+        if let oldAccount {
+            accounts.removeAll { $0.normalizedJID == oldAccount.normalizedJID }
+            try? preferences.saveAccounts(accounts)
+        }
         if let oldAccount {
             try? credentials.deletePassword(for: oldAccount.normalizedJID)
             if forgetHistory {
@@ -492,6 +501,49 @@ final class AppModel: ObservableObject {
         resetTypingState()
         resetMediaSendActivity()
         resetMediaPreviews()
+        if let next = accounts.first {
+            await switchAccount(to: next)
+        }
+    }
+
+    /// Adds an account and makes it the active connection. The login screen
+    /// uses the regular sign-in path, so credentials and per-account archives
+    /// are handled exactly as they are for the first account.
+    func addAccount(account: AccountConfiguration, password: String) async {
+        await signIn(account: account, password: password)
+    }
+
+    func switchAccount(to target: AccountConfiguration) async {
+        guard target.normalizedJID != account?.normalizedJID else { return }
+        let password: String
+        do {
+            guard let stored = try credentials.password(for: target.normalizedJID) else {
+                errorMessage = "Для этого аккаунта нет пароля в Keychain. Войдите снова."
+                return
+            }
+            password = stored
+        } catch {
+            errorMessage = "Для этого аккаунта нет пароля в Keychain. Войдите снова."
+            return
+        }
+        await xmpp.disconnect()
+        prepareStore(for: target.normalizedJID)
+        account = target
+        try? preferences.save(target)
+        globalEncryptionEnabled = preferences.encryptionEnabled(for: target.normalizedJID)
+        typingIndicatorsEnabled = preferences.chatStatesEnabled(for: target.normalizedJID)
+        xmpp.setChatStatesEnabled(typingIndicatorsEnabled)
+        await loadArchive(for: target.normalizedJID)
+        do {
+            try await xmpp.connect(
+                account: target,
+                password: password,
+                archiveCheckpoint: durableArchiveSyncCheckpoint,
+                mamCheckpoints: mamCheckpoints
+            )
+        } catch {
+            errorMessage = error.localizedDescription
+        }
     }
 
     func reconnect() async {
diff --git a/Sources/Shared/Models/Conversation.swift b/Sources/Shared/Models/Conversation.swift
index 672f208..a662e77 100644
--- a/Sources/Shared/Models/Conversation.swift
+++ b/Sources/Shared/Models/Conversation.swift
@@ -78,6 +78,15 @@ final class Conversation {
     }
 }
 
+/// A row in the cross-account inbox. JID alone is not a stable identity when
+/// two logged-in accounts have the same contact or a self-chat.
+struct AccountConversation: Identifiable {
+    let account: AccountConfiguration
+    let conversation: Conversation
+
+    var id: String { "\(account.normalizedJID)|\(conversation.jid)" }
+}
+
 private extension String {
     var nilIfBlank: String? {
         trimmingCharacters(in: .whitespacesAndNewlines).isEmpty ? nil : self
diff --git a/Sources/Shared/Persistence/AccountPreferences.swift b/Sources/Shared/Persistence/AccountPreferences.swift
index 5485161..3fdb73c 100644
--- a/Sources/Shared/Persistence/AccountPreferences.swift
+++ b/Sources/Shared/Persistence/AccountPreferences.swift
@@ -3,6 +3,7 @@ import Foundation
 final class AccountPreferences {
     private let defaults: UserDefaults
     private let accountKey = "luma.active-account.v1"
+    private let accountsKey = "luma.accounts.v1"
     private let encryptionSettingsKey = "luma.encryption-settings.v1"
     private let chatStateSettingsKey = "luma.chat-state-settings.v1"
 
@@ -15,6 +16,39 @@ final class AccountPreferences {
         return try? JSONDecoder().decode(AccountConfiguration.self, from: data)
     }
 
+    /// Returns every configured account. The original single-account key is
+    /// migrated lazily so existing installations keep working.
+    func loadAccounts() -> [AccountConfiguration] {
+        if let data = defaults.data(forKey: accountsKey),
+           let accounts = try? JSONDecoder().decode([AccountConfiguration].self, from: data) {
+            return accounts
+        }
+        guard let account = load() else { return [] }
+        return [account]
+    }
+
+    func saveAccounts(_ accounts: [AccountConfiguration]) throws {
+        let normalized = accounts.reduce(into: [String: AccountConfiguration]()) { result, account in
+            result[account.normalizedJID] = account
+        }.values.sorted { $0.normalizedJID < $1.normalizedJID }
+        defaults.set(try JSONEncoder().encode(normalized), forKey: accountsKey)
+        if let active = load(), normalized.contains(where: { $0.normalizedJID == active.normalizedJID }) {
+            try save(active)
+        } else if let first = normalized.first {
+            try save(first)
+        } else {
+            clear()
+        }
+    }
+
+    func add(_ account: AccountConfiguration) throws {
+        try saveAccounts(loadAccounts() + [account])
+    }
+
+    func remove(jid: String) throws {
+        try saveAccounts(loadAccounts().filter { $0.normalizedJID != jid.lowercased() })
+    }
+
     func save(_ account: AccountConfiguration) throws {
         let data = try JSONEncoder().encode(account)
         defaults.set(data, forKey: accountKey)
diff --git a/Sources/Shared/UI/MainTabView.swift b/Sources/Shared/UI/MainTabView.swift
index ba156c1..cf22833 100644
--- a/Sources/Shared/UI/MainTabView.swift
+++ b/Sources/Shared/UI/MainTabView.swift
@@ -157,7 +157,20 @@ private struct ChatsTab: View {
             SortDescriptor(\Conversation.lastActivity, order: .reverse)
         ]
     )
-    private var conversations: [Conversation]
+    private var storedConversations: [Conversation]
+
+    private var conversations: [AccountConversation] {
+        let source = model.conversations.isEmpty ? storedConversations : model.conversations
+        guard let account = model.account else {
+            return source.map {
+                AccountConversation(
+                    account: AccountConfiguration(jid: "preview@example.org"),
+                    conversation: $0
+                )
+            }
+        }
+        return source.map { AccountConversation(account: account, conversation: $0) }
+    }
 
     var body: some View {
         NavigationStack {
@@ -223,7 +236,7 @@ private struct ChatsTab: View {
 
     }
 
-    private var filteredConversations: [Conversation] {
+    private var filteredConversations: [AccountConversation] {
         let source =
             searchText.isEmpty
             ? conversations : conversations.filter(matchesSearch)
@@ -232,21 +245,37 @@ private struct ChatsTab: View {
 
     private var chatList: some View {
         List {
-            ForEach(filteredConversations) { conversation in
+            ForEach(filteredConversations) { item in
+                let conversation = item.conversation
                 NavigationLink {
                     ChatView(model: model, conversation: conversation)
-                        .id(conversation.jid)
+                        .id(item.id)
                         .onAppear {
-                            model.selectConversation(id: conversation.jid)
+                            if item.account.normalizedJID != model.account?.normalizedJID {
+                                Task {
+                                    await model.switchAccount(to: item.account)
+                                    model.selectConversation(id: conversation.jid)
+                                }
+                            } else {
+                                model.selectConversation(id: conversation.jid)
+                            }
                         }
                 } label: {
-                    ConversationRow(
-                        conversation: conversation,
-                        imageData: model.avatarData(for: conversation.jid),
-                        isEncrypted: model.encryptionEnabled(
-                            for: conversation.jid
+                    VStack(alignment: .leading, spacing: 2) {
+                        ConversationRow(
+                            conversation: conversation,
+                            imageData: model.avatarData(for: conversation.jid),
+                            isEncrypted: model.encryptionEnabled(
+                                for: conversation.jid
+                            )
                         )
-                    )
+                        if model.accounts.count > 1 {
+                            Text(item.account.normalizedJID)
+                                .font(.caption2)
+                                .foregroundStyle(.secondary)
+                                .padding(.leading, 52)
+                        }
+                    }
                 }
                 .listRowInsets(
                     EdgeInsets(top: 6, leading: 12, bottom: 6, trailing: 12)
@@ -279,9 +308,11 @@ private struct ChatsTab: View {
         }
     }
 
-    private func conversationSort(_ lhs: Conversation, _ rhs: Conversation)
+    private func conversationSort(_ lhs: AccountConversation, _ rhs: AccountConversation)
         -> Bool
     {
+        let lhs = lhs.conversation
+        let rhs = rhs.conversation
         if lhs.isPinned != rhs.isPinned { return lhs.isPinned }
         if lhs.lastActivity != rhs.lastActivity {
             return lhs.lastActivity > rhs.lastActivity
@@ -290,9 +321,11 @@ private struct ChatsTab: View {
             == .orderedAscending
     }
 
-    private func matchesSearch(_ conversation: Conversation) -> Bool {
-        conversation.displayName.localizedCaseInsensitiveContains(searchText)
+    private func matchesSearch(_ item: AccountConversation) -> Bool {
+        let conversation = item.conversation
+        return conversation.displayName.localizedCaseInsensitiveContains(searchText)
             || conversation.jid.localizedCaseInsensitiveContains(searchText)
+            || item.account.normalizedJID.localizedCaseInsensitiveContains(searchText)
     }
 }
 
@@ -664,6 +697,19 @@ private struct ContactRow: View {
         )
         private var conversations: [Conversation]
 
+        private var chatItems: [AccountConversation] {
+            let source = model.conversations.isEmpty ? conversations : model.conversations
+            guard let account = model.account else {
+                return source.map {
+                    AccountConversation(
+                        account: AccountConfiguration(jid: "preview@example.org"),
+                        conversation: $0
+                    )
+                }
+            }
+            return source.map { AccountConversation(account: account, conversation: $0) }
+        }
+
         var body: some View {
             NavigationSplitView {
                 sidebar
@@ -822,13 +868,14 @@ private struct ContactRow: View {
 
         @ViewBuilder
         private var chatRows: some View {
-            ForEach(filteredChats) { conversation in
+            ForEach(filteredChats) { item in
+                let conversation = item.conversation
                 ConversationRow(
                     conversation: conversation,
                     imageData: model.avatarData(for: conversation.jid),
                     isEncrypted: model.encryptionEnabled(for: conversation.jid)
                 )
-                .tag(conversation.jid)
+                .tag(item.id)
                 .contextMenu {
                     if conversation.isGroup {
                         Button("Удалить", role: .destructive) {
@@ -904,7 +951,15 @@ private struct ContactRow: View {
                 ChatView(model: model, conversation: conversation)
                     .id(conversation.jid)
                     .onAppear {
-                        model.selectConversation(id: conversation.jid)
+                        if let item = chatItems.first(where: { $0.id == selectedJID }),
+                           item.account.normalizedJID != model.account?.normalizedJID {
+                            Task {
+                                await model.switchAccount(to: item.account)
+                                model.selectConversation(id: conversation.jid)
+                            }
+                        } else {
+                            model.selectConversation(id: conversation.jid)
+                        }
                     }
             } else {
                 ContentUnavailableView(
@@ -934,37 +989,39 @@ private struct ContactRow: View {
                 else {
                     return nil
                 }
-                return conversations.first(where: {
-                    $0.jid == message.conversationID
-                })
+                return chatItems.first(where: { $0.conversation.jid == message.conversationID })?.conversation
             }
-            return conversations.first(where: { $0.jid == selectedJID })
+            return chatItems.first(where: { $0.id == selectedJID || $0.conversation.jid == selectedJID })?.conversation
         }
 
         private var defaultConversation: Conversation? {
-            mode == .chats ? sortedChats.first : nil
+            mode == .chats ? sortedChats.first?.conversation : nil
         }
 
         // MARK: Filtering and sorting
 
-        private var sortedChats: [Conversation] {
-            conversations.sorted(by: conversationSort)
+        private var sortedChats: [AccountConversation] {
+            chatItems.sorted(by: conversationSort)
         }
 
-        private var filteredChats: [Conversation] {
+        private var filteredChats: [AccountConversation] {
             searchText.isEmpty ? sortedChats : sortedChats.filter(matchesChat)
         }
 
-        private func matchesChat(_ conversation: Conversation) -> Bool {
+        private func matchesChat(_ item: AccountConversation) -> Bool {
+            let conversation = item.conversation
             conversation.displayName.localizedCaseInsensitiveContains(
                 searchText
             )
                 || conversation.jid.localizedCaseInsensitiveContains(searchText)
+                || item.account.normalizedJID.localizedCaseInsensitiveContains(searchText)
         }
 
-        private func conversationSort(_ lhs: Conversation, _ rhs: Conversation)
+        private func conversationSort(_ lhs: AccountConversation, _ rhs: AccountConversation)
             -> Bool
         {
+            let lhs = lhs.conversation
+            let rhs = rhs.conversation
             if lhs.isPinned != rhs.isPinned { return lhs.isPinned }
             if lhs.lastActivity != rhs.lastActivity {
                 return lhs.lastActivity > rhs.lastActivity
@@ -980,14 +1037,14 @@ private struct ContactRow: View {
                 .filter {
                     !$0.isGroup && model.rosterContactJIDs.contains($0.jid)
                 }
-                .filter { searchText.isEmpty || matchesChat($0) }
+                .filter { searchText.isEmpty || matchesChat(AccountConversation(account: model.account ?? AccountConfiguration(jid: "preview@example.org"), conversation: $0)) }
                 .sorted(by: contactSort)
         }
 
         private var filteredGroups: [Conversation] {
             conversations
                 .filter { $0.isGroup }
-                .filter { searchText.isEmpty || matchesChat($0) }
+                .filter { searchText.isEmpty || matchesChat(AccountConversation(account: model.account ?? AccountConfiguration(jid: "preview@example.org"), conversation: $0)) }
                 .sorted(by: contactSort)
         }
 
@@ -1018,13 +1075,13 @@ private struct ContactRow: View {
             selectedJID = nil
             searchText = ""
             if newMode == .chats {
-                selectedJID = sortedChats.first?.jid
+                selectedJID = sortedChats.first?.id
             }
         }
 
         private func ensureSelection() {
             if mode == .chats, selectedJID == nil {
-                selectedJID = sortedChats.first?.jid
+                selectedJID = sortedChats.first?.id
             }
         }
     }
diff --git a/Sources/Shared/UI/SettingsView.swift b/Sources/Shared/UI/SettingsView.swift
index 0a158c1..cbb1c0f 100644
--- a/Sources/Shared/UI/SettingsView.swift
+++ b/Sources/Shared/UI/SettingsView.swift
@@ -12,6 +12,7 @@ struct SettingsView: View {
     @State private var forgetHistory = false
     @State private var avatarItem: PhotosPickerItem?
     @State private var passcodeSheetMode: AppLockPasscodeSheet.Mode?
+    @State private var showingAddAccount = false
 
     var body: some View {
         #if os(iOS)
@@ -19,6 +20,7 @@ struct SettingsView: View {
                 Form {
                     formcontent()
                 }
+                .sheet(isPresented: $showingAddAccount) { LoginView(model: model) }
                 .navigationTitle("")
                 .navigationBarTitleDisplayMode(.inline)
                 .toolbar {
@@ -34,13 +36,36 @@ struct SettingsView: View {
                 }
             }
         #else
-            formcontent()
+            formcontent().sheet(isPresented: $showingAddAccount) { LoginView(model: model) }
         #endif
     }
 
     @ViewBuilder
     private func formcontent() -> some View {
         if let account = model.account {
+            Section("Аккаунты") {
+                ForEach(model.accounts) { configured in
+                    Button {
+                        Task { await model.switchAccount(to: configured) }
+                    } label: {
+                        HStack {
+                            Image(systemName: configured.id == account.id ? "checkmark.circle.fill" : "person.circle")
+                                .foregroundStyle(configured.id == account.id ? .green : .secondary)
+                            VStack(alignment: .leading) {
+                                Text(configured.displayName.isEmpty ? configured.normalizedJID : configured.displayName)
+                                if !configured.displayName.isEmpty { Text(configured.normalizedJID).font(.caption).foregroundStyle(.secondary) }
+                            }
+                            Spacer()
+                        }
+                    }
+                    .buttonStyle(.plain)
+                }
+                Button {
+                    showingAddAccount = true
+                } label: {
+                    Label("Добавить аккаунт", systemImage: "person.badge.plus")
+                }
+            }
             Section("Профиль") {
                 HStack(spacing: 14) {
                     AvatarView(