diff --git a/client/securedrop_client/gui/actions.py b/client/securedrop_client/gui/actions.py
index 0f3088cbe..2858d8c13 100644
--- a/client/securedrop_client/gui/actions.py
+++ b/client/securedrop_client/gui/actions.py
@@ -93,7 +93,7 @@ def __init__(
         # but when triggered from this menu, only applies to one source
         self._confirmation_dialog = confirmation_dialog(set([self.source]))
         self._confirmation_dialog.accepted.connect(
-            lambda: self.controller.delete_source(self.source)
+            lambda: self.controller.delete_sources(set([self.source]))
         )
         self.triggered.connect(self.trigger)
 
diff --git a/client/securedrop_client/gui/main.py b/client/securedrop_client/gui/main.py
index f5146a8d7..b0b368a09 100644
--- a/client/securedrop_client/gui/main.py
+++ b/client/securedrop_client/gui/main.py
@@ -29,7 +29,7 @@
 from securedrop_client.db import Source, User
 from securedrop_client.gui.auth import LoginDialog
 from securedrop_client.gui.shortcuts import Shortcuts
-from securedrop_client.gui.widgets import BottomPane, InnerTopPane, LeftPane, MainView
+from securedrop_client.gui.widgets import BottomPane, LeftPane, MainView
 from securedrop_client.logic import Controller
 from securedrop_client.resources import load_all_fonts, load_css, load_icon
 
@@ -63,11 +63,6 @@ def __init__(
         self.setWindowTitle(_("SecureDrop Client {}").format(__version__))
         self.setWindowIcon(load_icon(self.icon))
 
-        # Top Pane to hold batch actions, eventually will also hold
-        # search bar for keyword filtering. The Top Pane is not a top-level
-        # layout element, but instead is nested inside the central widget view.
-        self.top_pane = InnerTopPane()
-
         # Bottom Pane to display activity and error messages
         self.bottom_pane = BottomPane()
 
@@ -80,6 +75,7 @@ def __init__(
         self.main_pane.setLayout(layout)
         self.left_pane = LeftPane()
         self.main_view = MainView(self.main_pane, app_state)
+
         layout.addWidget(self.left_pane)
         layout.addWidget(self.main_view)
 
@@ -109,10 +105,15 @@ def setup(self, controller: Controller) -> None:
         views used in the UI.
         """
         self.controller = controller
-        self.top_pane.setup(self.controller)
         self.bottom_pane.setup(self.controller)
         self.left_pane.setup(self, self.controller)
         self.main_view.setup(self.controller)
+
+        # Listen for changes to the selected sources in sourcelist
+        self.main_view.source_list.selected_sources.connect(
+            self.controller.on_receive_selected_sources
+        )
+
         self.show_login()
 
     def show_main_window(self, db_user: User | None = None) -> None:
@@ -190,6 +191,7 @@ def set_logged_in_as(self, db_user: User) -> None:
         """
         self.left_pane.set_logged_in_as(db_user)
         self.bottom_pane.set_logged_in()
+        self.main_view.set_logged_in()
 
     def logout(self) -> None:
         """
@@ -197,6 +199,7 @@ def logout(self) -> None:
         """
         self.left_pane.set_logged_out()
         self.bottom_pane.set_logged_out()
+        self.main_view.set_logged_out()
 
     def update_sync_status(self, message: str, duration: int = 0) -> None:
         """
diff --git a/client/securedrop_client/gui/widgets.py b/client/securedrop_client/gui/widgets.py
index 604cc5508..34aae742f 100644
--- a/client/securedrop_client/gui/widgets.py
+++ b/client/securedrop_client/gui/widgets.py
@@ -42,6 +42,7 @@
     QResizeEvent,
 )
 from PyQt5.QtWidgets import (
+    QAbstractItemView,
     QAction,
     QGridLayout,
     QHBoxLayout,
@@ -54,6 +55,7 @@
     QScrollArea,
     QSizePolicy,
     QSpacerItem,
+    QStackedLayout,
     QStatusBar,
     QToolBar,
     QToolButton,
@@ -451,6 +453,18 @@ def __init__(self) -> None:
     def setup(self, controller: Controller) -> None:
         self.batch_actions.setup(controller)
 
+    def set_logged_out(self) -> None:
+        """
+        Disable action toolbar if logged out.
+        """
+        self.batch_actions.toolbar.hide_action()
+
+    def set_logged_in(self) -> None:
+        """
+        Enable action toolbar if logged in.
+        """
+        self.batch_actions.toolbar.show_action()
+
 
 class BatchActionWidget(QWidget):
     def __init__(self) -> None:
@@ -501,37 +515,51 @@ def __init__(self) -> None:
         # Style and attributes
         self.setMovable(False)
         self.setToolButtonStyle(Qt.ToolButtonStyle.ToolButtonTextBesideIcon)
+        self.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Fixed)
 
-        # TODO: Icon needs changing?
-        # TODO: set keyboard shortcut
-        batch_delete_action = QAction(
-            QIcon(load_image("delete_close.svg")), _("DELETE SOURCES"), self
+        self.delete_sources_action = QAction(
+            QIcon(load_image("delete_sources_toolbar_icon.svg")), _("DELETE SOURCES"), self
         )
-        batch_delete_action.setObjectName("BatchActionButton")
-        batch_delete_action.setToolTip(_("Delete selected source accounts"))
-        batch_delete_action.triggered.connect(self.delete_multiple_sources)
+        self.delete_sources_action.setObjectName("BatchActionButton")
+        self.delete_sources_action.setToolTip(
+            _(
+                "Delete selected source accounts. "
+                "Ctrl+click sources below to select multiple sources."
+            )
+        )
+        self.delete_sources_action.triggered.connect(self.on_action_triggered)
+        self.button = self.widgetForAction(self.delete_sources_action)
 
-        # TODO: Enhancement: start with action disabled via setEnabled(False),
-        # enable when sources are selected
-        self.addAction(batch_delete_action)
+        # Add spacer. "select all" checkbox can replace the spacer in future
+        spacer = QWidget()
+        spacer.setFixedSize(14, 14)  # sourcewidget spacer size
+        self.addWidget(spacer)
+        self.addAction(self.delete_sources_action)
 
-    def delete_multiple_sources(self) -> None:
-        """
-        Requires logged-in session. Delete currently-selected sources.
-        """
-        logger.debug("delete_multiple_sources triggered")
+    def setup(self, controller: Controller) -> None:
+        self.controller = controller
+
+    def hide_action(self) -> None:
+        self.delete_sources_action.setVisible(False)
+
+    def show_action(self) -> None:
+        self.delete_sources_action.setVisible(True)
+
+    @pyqtSlot()
+    def on_action_triggered(self) -> None:
         if self.controller.api is None:
             self.controller.on_action_requiring_login()
         else:
-            # TODO rm: this is a placeholder
-            logger.debug("Delete sources clicked")
-            # TODO in followup PR
-            # An in-memory set of Sources selected by the user to be queued for deletion will
-            # live in the main app. If logged in, pass those to delete confirmation dialog,
-            # and if the user accepts the dialog, the sources will be deleted.
-
-    def setup(self, controller: Controller) -> None:
-        self.controller = controller
+            # The current source selection is continuously received by the controller
+            # as the user selects and deselects; here we retrieve the selection
+            targets = self.controller.get_selected_sources()
+            if targets:
+                dialog = DeleteSourceDialog(targets)
+                dialog.accepted.connect(lambda: self.controller.delete_sources(targets))
+                dialog.exec()
+            else:
+                # No selected sources should return an empty set, not None
+                logger.error("Toolbar action triggered without valid data from controller.")
 
 
 class UserProfile(QLabel):
@@ -717,6 +745,14 @@ class MainView(QWidget):
     main context view, and top actions pane).
     """
 
+    # Index items for StackedLayout. CONVERSATION_INDEX should remain the
+    # biggest int value, for future ease of caching and cleaning up additional
+    # optional pages (eg rendered conversations) in higher index positions
+    NO_SOURCES_INDEX = 0
+    NOTHING_SELECTED_INDEX = 1
+    MULTI_SELECTED_INDEX = 2
+    CONVERSATION_INDEX = 3
+
     def __init__(
         self,
         parent: Optional[QWidget],
@@ -735,11 +771,12 @@ def __init__(
         self._layout.setSpacing(0)
         self.setLayout(self._layout)
 
-        # Top pane layout (actions/eventual searchbar)
+        # Top Pane to hold batch actions, eventually will also hold
+        # search bar for keyword filtering
         self.top_pane = InnerTopPane()
 
         # Hold main conversation view and sourcelist
-        inner_container = QHBoxLayout(self)
+        inner_container = QHBoxLayout()
 
         # Set margins and spacing
         inner_container.setContentsMargins(0, 0, 0, 0)
@@ -747,6 +784,7 @@ def __init__(
 
         # Create SourceList widget
         self.source_list = SourceList()
+        self.source_list.setSelectionMode(QAbstractItemView.ExtendedSelection)
         self.source_list.itemSelectionChanged.connect(self.on_source_changed)
         if app_state is not None:
             self.source_list.source_selection_changed.connect(
@@ -757,12 +795,22 @@ def __init__(
         # Create widgets
         self.view_holder = QWidget()
         self.view_holder.setObjectName("MainView_view_holder")
-        self.view_layout = QVBoxLayout()
+
+        # Layout where only one view shows at a time. Suitable for the case
+        # where we show either a conversation or a contextually-appropriate
+        # message ("Select a source...", "Nothing to see yet", etc)
+        self.view_layout = QStackedLayout()
         self.view_holder.setLayout(self.view_layout)
         self.view_layout.setContentsMargins(0, 0, 0, 0)
         self.view_layout.setSpacing(0)
-        self.empty_conversation_view = EmptyConversationView()
-        self.view_layout.addWidget(self.empty_conversation_view)
+
+        self.view_layout.insertWidget(self.NO_SOURCES_INDEX, EmptyConversationView())
+        self.view_layout.insertWidget(self.NOTHING_SELECTED_INDEX, NothingSelectedView())
+        self.view_layout.insertWidget(self.MULTI_SELECTED_INDEX, MultiSelectView())
+
+        # Placeholder widget at the CONVERSATION_INDEX, dynamically replaced by conversation view
+        # as soon as a source conversation is selected
+        self.view_layout.insertWidget(self.CONVERSATION_INDEX, NothingSelectedView())
 
         # Add widgets to layout
         inner_container.addWidget(self.source_list, stretch=1)
@@ -783,25 +831,22 @@ def setup(self, controller: Controller) -> None:
         self.source_list.setup(controller)
         self.top_pane.setup(controller)
 
+    def set_logged_out(self) -> None:
+        """
+        Logged-out context. Called by parent.
+        """
+        self.top_pane.set_logged_out()
+
+    def set_logged_in(self) -> None:
+        """
+        Logged-in context. Called by parent.
+        """
+        self.top_pane.set_logged_in()
+
     def show_sources(self, sources: list[Source]) -> None:
         """
         Update the sources list in the GUI with the supplied list of sources.
         """
-        # If no sources are supplied, display the EmptyConversationView with the no-sources message.
-        #
-        # If there are sources but no source is selected in the GUI, display the
-        # EmptyConversationView with the no-source-selected messaging.
-        #
-        # Otherwise, hide the EmptyConversationView.
-        if not sources:
-            self.empty_conversation_view.show_no_sources_message()
-            self.empty_conversation_view.show()
-        elif not self.source_list.get_selected_source():
-            self.empty_conversation_view.show_no_source_selected_message()
-            self.empty_conversation_view.show()
-        else:
-            self.empty_conversation_view.hide()
-
         # If the source list in the GUI is empty, then we will run the optimized initial update.
         # Otherwise, do a regular source list update.
         if not self.source_list.source_items:
@@ -812,20 +857,94 @@ def show_sources(self, sources: list[Source]) -> None:
                 # Then call the function to remove the wrapper and its children.
                 self.delete_conversation(source_uuid)
 
+        # Show the correct conversation pane gui element depending on
+        # the number of sources a) available and b) selected.
+        # An improved approach will be to create an `on_source_context_update`
+        # pyQtSlot that subscribes/listens for storage updates and calls
+        # `show_sources` and `show_conversation_context`.
+        self._on_update_conversation_context()
+
+    def _on_update_conversation_context(self) -> None:
+        """
+        Show the correct view type based on the number of available and selected sources.
+
+        If there are no sources, show the empty conversation view.
+        If there are sources, but none are selected, show the "Select a source" view.
+        If there are sources and exactly one has been selected, show the conversation
+        with that source.
+        If multiple sources are selected, show the "Multiple sources selected" view.
+
+        This method can be triggered by a click event (list index changed) or by a "sync"
+        event (sourcelist updated), which redraws the list.
+
+        In the latter case, supply list[Source] and set is_redraw_event to True.
+
+        Return number of selected sources.
+        """
+        selected = len(self.source_list.selectedItems())
+        if selected == 0 and self.source_list.count() == 0:
+            self.view_layout.setCurrentIndex(self.NO_SOURCES_INDEX)
+        elif selected == 0:
+            self.view_layout.setCurrentIndex(self.NOTHING_SELECTED_INDEX)
+        elif selected > 1:
+            self.view_layout.setCurrentIndex(self.MULTI_SELECTED_INDEX)
+        else:
+            # Exactly one source selected
+            self.view_layout.setCurrentIndex(self.CONVERSATION_INDEX)
+
+    @pyqtSlot()
     def on_source_changed(self) -> None:
         """
-        Show conversation for the selected source.
+        Show conversation for the selected source, or, if multiple sources are selected,
+        show multi select view.
+        """
+
+        selected = len(self.source_list.selectedItems())
+        if selected == 1:
+            # One source selected; prepare the conversation widget
+            try:
+                source = self.source_list.get_selected_source()
+                if not source:
+                    return
+
+                self.controller.session.refresh(source)
+
+                # Immediately show the selected source as seen in the UI and then make a
+                # request to mark source as seen.
+                self.source_list.source_selected.emit(source.uuid)
+                self.controller.mark_seen(source)
+
+                # Get or create the SourceConversationWrapper
+                if source.uuid in self.source_conversations:
+                    conversation_wrapper = self.source_conversations[source.uuid]
+                    conversation_wrapper.conversation_view.update_conversation(  # type: ignore[has-type]
+                        source.collection
+                    )
+                else:
+                    conversation_wrapper = SourceConversationWrapper(
+                        source, self.controller, self._state
+                    )
+                    self.source_conversations[source.uuid] = conversation_wrapper
+
+                # Put this widget into the QStackedLayout at the correct position
+                self.set_conversation(conversation_wrapper)
+                logger.debug(f"Set conversation to the selected source with uuid: {source.uuid}")
+
+            except sqlalchemy.exc.InvalidRequestError as e:
+                logger.debug(e)
+
+        # Now show the right widget depending on the selection
+        self._on_update_conversation_context()
+
+    def refresh_source_conversations(self) -> None:
+        """
+        Refresh the selected source conversation.
         """
         try:
             source = self.source_list.get_selected_source()
             if not source:
                 return
-
             self.controller.session.refresh(source)
-
-            # Immediately show the selected source as seen in the UI and then make a request to mark
-            # source as seen.
-            self.source_list.source_selected.emit(source.uuid)
             self.controller.mark_seen(source)
 
             # Get or create the SourceConversationWrapper
@@ -840,26 +959,6 @@ def on_source_changed(self) -> None:
                 )
                 self.source_conversations[source.uuid] = conversation_wrapper
 
-            self.set_conversation(conversation_wrapper)
-            logger.debug(f"Set conversation to the selected source with uuid: {source.uuid}")
-
-        except sqlalchemy.exc.InvalidRequestError as e:
-            logger.debug(e)
-
-    def refresh_source_conversations(self) -> None:
-        """
-        Refresh the selected source conversation.
-        """
-        try:
-            source = self.source_list.get_selected_source()
-            if not source:
-                return
-            self.controller.session.refresh(source)
-            self.controller.mark_seen(source)
-            conversation_wrapper = self.source_conversations[source.uuid]
-            conversation_wrapper.conversation_view.update_conversation(  # type: ignore[has-type]
-                source.collection
-            )
         except sqlalchemy.exc.InvalidRequestError as e:
             logger.debug("Error refreshing source conversations: %s", e)
 
@@ -876,21 +975,26 @@ def delete_conversation(self, source_uuid: str) -> None:
         except KeyError:
             logger.debug(f"No SourceConversationWrapper for {source_uuid} to delete")
 
-    def set_conversation(self, widget: QWidget) -> None:
+    def set_conversation(self, conversation: SourceConversationWrapper) -> None:
         """
-        Update the view holder to contain the referenced widget.
+        Replace rendered conversation at CONVERSATION_INDEX. Does not change
+        QStackedLayout current index.
         """
-        old_widget = self.view_layout.takeAt(0)
+        self.view_layout.insertWidget(self.CONVERSATION_INDEX, conversation)
 
-        if old_widget and old_widget.widget():
-            old_widget.widget().hide()
+        # At the moment, we don't keep these widgets as pages in the stacked layout,
+        # and we store an in-memory dict of {uuids: widget}s to avoid recreating a widget every
+        # time a conversation is revisited. A fixed-size cache could be implemented here instead.
+        layoutitem = self.view_layout.itemAt(self.CONVERSATION_INDEX + 1)
+        if layoutitem:
+            self.view_layout.removeWidget(layoutitem.widget())
 
-        self.empty_conversation_view.hide()
-        self.view_layout.addWidget(widget)
-        widget.show()
 
+class ConversationPaneView(QWidget):
+    """
+    Base widget element for the ConversationPane.
+    """
 
-class EmptyConversationView(QWidget):
     MARGIN = 30
     NEWLINE_HEIGHT_PX = 35
 
@@ -898,17 +1002,20 @@ def __init__(self) -> None:
         super().__init__()
 
         self.setObjectName("EmptyConversationView")
+        self._layout = QVBoxLayout()
+        self.setContentsMargins(self.MARGIN, self.MARGIN, self.MARGIN, self.MARGIN)
+        self._layout.setAlignment(Qt.AlignCenter)
+        self.setLayout(self._layout)
 
-        # Set layout
-        layout = QHBoxLayout()
-        layout.setContentsMargins(self.MARGIN, self.MARGIN, self.MARGIN, self.MARGIN)
-        self.setLayout(layout)
 
-        # Create widgets
-        self.no_sources = QWidget()
-        self.no_sources.setObjectName("EmptyConversationView_no_sources")
-        no_sources_layout = QVBoxLayout()
-        self.no_sources.setLayout(no_sources_layout)
+class EmptyConversationView(ConversationPaneView):
+    """
+    Displayed in conversation pane when sourcelist is empty.
+    """
+
+    def __init__(self) -> None:
+        super().__init__()
+
         no_sources_instructions = QLabel(_("Nothing to see just yet!"))
         no_sources_instructions.setObjectName("EmptyConversationView_instructions")
         no_sources_instructions.setWordWrap(True)
@@ -920,16 +1027,21 @@ def __init__(self) -> None:
             _("This is where you will read messages, reply to sources, and work with files.")
         )
         no_sources_instruction_details2.setWordWrap(True)
-        no_sources_layout.addWidget(no_sources_instructions)
-        no_sources_layout.addSpacing(self.NEWLINE_HEIGHT_PX)
-        no_sources_layout.addWidget(no_sources_instruction_details1)
-        no_sources_layout.addSpacing(self.NEWLINE_HEIGHT_PX)
-        no_sources_layout.addWidget(no_sources_instruction_details2)
-
-        self.no_source_selected = QWidget()
-        self.no_source_selected.setObjectName("EmptyConversationView_no_source_selected")
-        no_source_selected_layout = QVBoxLayout()
-        self.no_source_selected.setLayout(no_source_selected_layout)
+        self._layout.addWidget(no_sources_instructions)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX)
+        self._layout.addWidget(no_sources_instruction_details1)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX)
+        self._layout.addWidget(no_sources_instruction_details2)
+
+
+class NothingSelectedView(ConversationPaneView):
+    """
+    Displayed in conversation pane when sources are present but none are selected.
+    """
+
+    def __init__(self) -> None:
+        super().__init__()
+
         no_source_selected_instructions = QLabel(_("Select a source from the list, to:"))
         no_source_selected_instructions.setObjectName("EmptyConversationView_instructions")
         no_source_selected_instructions.setWordWrap(True)
@@ -960,24 +1072,50 @@ def __init__(self) -> None:
         bullet3_layout.addWidget(bullet3_bullet)
         bullet3_layout.addWidget(QLabel(_("Send a response")))
         bullet3_layout.addStretch()
-        no_source_selected_layout.addWidget(no_source_selected_instructions)
-        no_source_selected_layout.addSpacing(self.NEWLINE_HEIGHT_PX)
-        no_source_selected_layout.addWidget(bullet1)
-        no_source_selected_layout.addWidget(bullet2)
-        no_source_selected_layout.addWidget(bullet3)
-        no_source_selected_layout.addSpacing(self.NEWLINE_HEIGHT_PX * 4)
+        no_source_selected_end_instructions = QLabel(
+            _("Or, select multiple sources with Ctrl+click.")
+        )
+        no_source_selected_end_instructions.setObjectName("EmptyConversationView_instructions")
+        no_source_selected_end_instructions.setWordWrap(True)
+        self._layout.addWidget(no_source_selected_instructions)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX)
+        self._layout.addWidget(bullet1)
+        self._layout.addWidget(bullet2)
+        self._layout.addWidget(bullet3)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX * 4)
+        self._layout.addWidget(no_source_selected_end_instructions)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX * 4)
 
-        # Add widgets
-        layout.addWidget(self.no_sources, alignment=Qt.AlignCenter)
-        layout.addWidget(self.no_source_selected, alignment=Qt.AlignCenter)
 
-    def show_no_sources_message(self) -> None:
-        self.no_sources.show()
-        self.no_source_selected.hide()
+class MultiSelectView(ConversationPaneView):
+    """
+    Displayed in conversation pane when multiple sources are selected.
+    """
 
-    def show_no_source_selected_message(self) -> None:
-        self.no_sources.hide()
-        self.no_source_selected.show()
+    def __init__(self) -> None:
+        super().__init__()
+        multi_sources_instructions = QLabel(_("Multiple Sources Selected"))
+        multi_sources_instructions.setObjectName("EmptyConversationView_instructions")
+        multi_sources_instructions.setWordWrap(True)
+        multi_sources_instruction_details1 = QLabel(
+            _(
+                "Select or de-select sources using Ctrl+click, Shift+click, "
+                "or by dragging the mouse."
+            )
+        )
+        multi_sources_instruction_details1.setWordWrap(True)
+        multi_sources_instruction_details2 = QLabel(
+            _(
+                "Use the top toolbar to delete multiple sources at once. "
+                "You will be shown a confirmation dialog before anything is deleted."
+            )
+        )
+        multi_sources_instruction_details2.setWordWrap(True)
+        self._layout.addWidget(multi_sources_instructions)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX)
+        self._layout.addWidget(multi_sources_instruction_details1)
+        self._layout.addSpacing(self.NEWLINE_HEIGHT_PX)
+        self._layout.addWidget(multi_sources_instruction_details2)
 
 
 class SourceListWidgetItem(QListWidgetItem):
@@ -1002,9 +1140,13 @@ class SourceList(QListWidget):
     Displays the list of sources.
     """
 
+    # State machine signals
     source_selection_changed = pyqtSignal(state.SourceId)
     source_selection_cleared = pyqtSignal()
 
+    # Bulk-context signal (toolbar)
+    selected_sources = pyqtSignal(object)  # set[Source]
+
     NUM_SOURCES_TO_ADD_AT_A_TIME = 32
     INITIAL_UPDATE_SCROLLBAR_WIDTH = 20
 
@@ -1202,12 +1344,29 @@ def set_snippet(self, source_uuid: str, collection_item_uuid: str, content: str)
 
     @pyqtSlot()
     def _on_item_selection_changed(self) -> None:
-        source = self.get_selected_source()
-        if source is not None:
-            self.source_selection_changed.emit(state.SourceId(source.uuid))
+        """
+        0..n items may be selected. If multiple items are selected, to avoid confusion,
+        don't preview any individual source conversation, but instead show a contextual message.
+        """
+
+        logger.debug(f"{len(self.selectedItems())} selected")
+        selected = []
+        for item in self.selectedItems():
+            widget = self.itemWidget(item)
+            if isinstance(widget, SourceWidget):
+                selected.append(widget.source)
+
+        # Show conversation view if one source selected
+        if len(selected) == 1:
+            source = self.get_selected_source()
+            if source:
+                self.source_selection_changed.emit(state.SourceId(source.uuid))
         else:
             self.source_selection_cleared.emit()
 
+        # Update listeners (action toolbar) with current selection
+        self.selected_sources.emit(set(selected))
+
 
 class SourcePreview(SecureQLabel):
     PREVIEW_WIDTH_DIFFERENCE = 140
@@ -3542,9 +3701,12 @@ class SourceMenu(QMenu):
 
     This menu provides below functionality via menu actions:
 
-    1. Delete source
-
-    Note: At present this only supports "delete" operation.
+    * Delete Source
+    * Delete Conversation
+    * Download Files
+    * Export Transcript
+    * Export Conversation and Transcript
+    * Print Transcript
     """
 
     SOURCE_MENU_CSS = load_css("source_menu.css")
diff --git a/client/securedrop_client/locale/messages.pot b/client/securedrop_client/locale/messages.pot
index 2d85f4915..15c8b1ec1 100644
--- a/client/securedrop_client/locale/messages.pot
+++ b/client/securedrop_client/locale/messages.pot
@@ -115,7 +115,7 @@ msgstr ""
 msgid "DELETE SOURCES"
 msgstr ""
 
-msgid "Delete selected source accounts"
+msgid "Delete selected source accounts. Ctrl+click sources below to select multiple sources."
 msgstr ""
 
 msgid "{}"
@@ -148,6 +148,18 @@ msgstr ""
 msgid "Send a response"
 msgstr ""
 
+msgid "Or, select multiple sources with Ctrl+click."
+msgstr ""
+
+msgid "Multiple Sources Selected"
+msgstr ""
+
+msgid "Select or de-select sources using Ctrl+click, Shift+click, or by dragging the mouse."
+msgstr ""
+
+msgid "Use the top toolbar to delete multiple sources at once. You will be shown a confirmation dialog before anything is deleted."
+msgstr ""
+
 msgid "Deleting files and messages…"
 msgstr ""
 
diff --git a/client/securedrop_client/logic.py b/client/securedrop_client/logic.py
index 565774ce5..b92fa0ff3 100644
--- a/client/securedrop_client/logic.py
+++ b/client/securedrop_client/logic.py
@@ -417,6 +417,9 @@ def __init__(  # type: ignore[no-untyped-def]
         ):
             os.chmod(self.last_sync_filepath, 0o600)
 
+        # Store currently-selected sources
+        self._selected_sources: set[db.Source] | None = None
+
     @pyqtSlot(int)
     def _on_main_queue_updated(self, num_items: int) -> None:
         if num_items > 0:
@@ -607,6 +610,9 @@ def login_offline_mode(self) -> None:
         # may have attempted online mode login, then switched to offline)
         self.gui.clear_clipboard()
         self.gui.show_main_window()
+
+        # All child elements of main window should show logged_out state
+        self.gui.logout()
         self.update_sources()
 
     def on_action_requiring_login(self) -> None:
@@ -1044,21 +1050,22 @@ def on_delete_source_failure(self, e: Exception) -> None:
             self.source_deletion_failed.emit(e.source_uuid)
 
     @login_required
-    def delete_source(self, source: db.Source) -> None:
+    def delete_sources(self, sources: set[db.Source]) -> None:
         """
-        Performs a delete operation on source record.
+        Performs a delete operation on one or more source records.
 
-        This method will submit a job to delete the source record on
-        the server. If the job succeeds, the success handler will
+        This method will submit a job to delete each target source record on
+        the server. If a given job succeeds, the success handler will
         synchronize the server records with the local state. If not,
         the failure handler will display an error.
         """
-        job = DeleteSourceJob(source.uuid)
-        job.success_signal.connect(self.on_delete_source_success)
-        job.failure_signal.connect(self.on_delete_source_failure)
+        for source in sources:
+            job = DeleteSourceJob(source.uuid)
+            job.success_signal.connect(self.on_delete_source_success)
+            job.failure_signal.connect(self.on_delete_source_failure)
 
-        self.add_job.emit(job)
-        self.source_deleted.emit(source.uuid)
+            self.add_job.emit(job)
+            self.source_deleted.emit(source.uuid)
 
     @login_required
     def delete_conversation(self, source: db.Source) -> None:
@@ -1183,3 +1190,10 @@ def update_failed_replies(self) -> None:
         failed_replies = storage.mark_all_pending_drafts_as_failed(self.session)
         for failed_reply in failed_replies:
             self.reply_failed.emit(failed_reply.uuid)
+
+    @pyqtSlot(object)
+    def on_receive_selected_sources(self, sources: set[db.Source]) -> None:
+        self._selected_sources = sources
+
+    def get_selected_sources(self) -> set[db.Source] | None:
+        return self._selected_sources
diff --git a/client/securedrop_client/resources/css/sdclient.css b/client/securedrop_client/resources/css/sdclient.css
index b371a2eda..a60b60e8e 100644
--- a/client/securedrop_client/resources/css/sdclient.css
+++ b/client/securedrop_client/resources/css/sdclient.css
@@ -121,30 +121,36 @@ QWidget {
 
 #BatchActionWidget {
     background-color: #fff;
-    min-height: 24px;
     margin: 2px;
 }
 
+#BatchActionToolbar {
+    min-height: 42px;
+}
+
+#BatchActionToolbar QToolButton:disabled {
+    color: #f9f9ff;
+    background-color: #a5b3e9;
+    border: 2px solid #a5b3e9;
+}
+
 #BatchActionToolbar QToolButton {
     font-family: 'Montserrat';
     font-weight: 600;
     font-size: 12px;
     padding: 2px;
-    color: #2a319d;
+    color: #a5b3e9;
     background-color: #fff;
-    border: 2px solid #2a319d;
-}
-
-#BatchActionToolbar QToolButton:disabled {
-    color: #a5a8d8;
-    background-color: #9495b9;
-    border: 2px solid #a5a8d8;
+    border: 2px solid #a5b3e9;
+    border-radius: 4%;
+    margin-left: 2px;
+    margin-right: 2px;
 }
 
 #BatchActionToolbar QToolButton:hover,
 #BatchActionToolbar QToolButton:checked {
-    background-color: #05a6fe;
-    border: 2px solid #05a6fe;
+    background-color: #a5b3e9;
+    border: 2px solid #a5b3e9;
     color: #fff;
 }
 
@@ -164,7 +170,7 @@ QWidget {
 #EmptyConversationView QLabel {
     font-family: Montserrat;
     font-weight: 400;
-    font-size: 35px;
+    font-size: 30px;
     color: #a5b3e9;
 }
 
@@ -174,7 +180,7 @@ QWidget {
 
 #EmptyConversationView QLabel#EmptyConversationView_bullet {
     margin: 4px 0px 0px 0px;
-    font-size: 35px;
+    font-size: 30px;
     font-weight: 600;
 }
 
@@ -187,11 +193,12 @@ QListView#SourceList {
 }
 
 QListView#SourceList::item:selected {
-    background-color: rgba(244, 245, 255, 0.84);
+    /* #a5b3e94d aka #e4e8f8 */
+    background-color: rgba(165, 179, 233, 0.30);
 }
 
 QListView#SourceList::item:hover {
-    background-color: #f9f9ff;
+    background-color: #e4e8f8;
 }
 
 #SourceWidget_container {
diff --git a/client/securedrop_client/resources/images/delete_sources_toolbar_icon.svg b/client/securedrop_client/resources/images/delete_sources_toolbar_icon.svg
new file mode 100644
index 000000000..8ab2687b4
--- /dev/null
+++ b/client/securedrop_client/resources/images/delete_sources_toolbar_icon.svg
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="12px" height="11px" viewBox="0 0 12 11" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <!-- Generator: Sketch 52.3 (67297) - http://www.bohemiancoding.com/sketch -->
+    <title>Delete-X</title>
+    <desc>Created with Sketch.</desc>
+    <g id="Spex" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <g id="ICONZZZ" transform="translate(-452.000000, -107.000000)" fill="#e4e8f8">
+            <polygon id="Delete-X" points="460.958957 107 457.672209 110.113331 454.393102 107.009246 452 109.27641 455.276559 112.379691 452 115.483374 454.393102 117.750136 457.672209 114.647257 460.958957 117.75898 463.352909 115.492217 460.066161 112.379691 463.352909 109.267164"></polygon>
+        </g>
+    </g>
+</svg>
\ No newline at end of file
diff --git a/client/tests/functional/test_delete_source.py b/client/tests/functional/test_delete_source.py
index e368797ba..5c26bfcdc 100644
--- a/client/tests/functional/test_delete_source.py
+++ b/client/tests/functional/test_delete_source.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -30,18 +31,21 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
 
     # Delete the selected source
     # Note: The qtbot object cannot interact with QAction items (as used in the delete button/menu)
     # so we programatically delete the source rather than using the GUI via qtbot
     source_count = gui.main_view.source_list.count()
-    controller.delete_source(conversation.conversation_title_bar.source)
+    controller.delete_sources(set([conversation.conversation_title_bar.source]))
 
     def check_source_list():
         assert gui.main_view.source_list.count() == source_count - 1
diff --git a/client/tests/functional/test_download_file.py b/client/tests/functional/test_download_file.py
index df31d8ccd..40701305d 100644
--- a/client/tests/functional/test_download_file.py
+++ b/client/tests/functional/test_download_file.py
@@ -40,7 +40,8 @@ def check_for_sources():
 
     def conversation_with_file_is_rendered():
         assert gui.main_view.view_layout.itemAt(0)
-        conversation = gui.main_view.view_layout.itemAt(0).widget()
+        conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
+
         assert isinstance(conversation, SourceConversationWrapper)
         file_id = list(conversation.conversation_view.current_messages.keys())[2]
         file_widget = conversation.conversation_view.current_messages[file_id]
@@ -48,7 +49,8 @@ def conversation_with_file_is_rendered():
 
     # Get the selected source conversation that contains a file attachment
     qtbot.waitUntil(conversation_with_file_is_rendered, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
+
     file_id = list(conversation.conversation_view.current_messages.keys())[2]
     file_widget = conversation.conversation_view.current_messages[file_id]
 
diff --git a/client/tests/functional/test_export_wizard.py b/client/tests/functional/test_export_wizard.py
index a1351bbdd..8d084489c 100644
--- a/client/tests/functional/test_export_wizard.py
+++ b/client/tests/functional/test_export_wizard.py
@@ -49,14 +49,16 @@ def check_for_sources():
 
     def conversation_with_file_is_rendered():
         assert gui.main_view.view_layout.itemAt(0)
-        conversation = gui.main_view.view_layout.itemAt(0).widget()
+        conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
+
         assert isinstance(conversation, SourceConversationWrapper)
         file_widget = list(conversation.conversation_view.current_messages.values())[2]
         assert isinstance(file_widget, FileWidget)
 
     # Get the selected source conversation that contains a file attachment
     qtbot.waitUntil(conversation_with_file_is_rendered, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
+
     file_widget = list(conversation.conversation_view.current_messages.values())[2]
 
     # If the file is not downloaded, click on the download button
diff --git a/client/tests/functional/test_offline_delete_source.py b/client/tests/functional/test_offline_delete_source.py
index 1a108752e..25eca0f61 100644
--- a/client/tests/functional/test_offline_delete_source.py
+++ b/client/tests/functional/test_offline_delete_source.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -31,17 +32,20 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
 
     # Attempt to delete the selected source
     # Note: The qtbot object cannot interact with QAction items (as used in the delete button/menu)
     # so we programatically attempt to delete the source rather than using the GUI via qtbot
-    controller.delete_source(conversation.conversation_title_bar.source)
+    controller.delete_sources(set([conversation.conversation_title_bar.source]))
 
     def check_for_error():
         msg = gui.bottom_pane.error_status_bar.status_bar.currentMessage()
diff --git a/client/tests/functional/test_offline_read_conversation.py b/client/tests/functional/test_offline_read_conversation.py
index 21d6e291a..7fcb44fc9 100644
--- a/client/tests/functional/test_offline_read_conversation.py
+++ b/client/tests/functional/test_offline_read_conversation.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -30,12 +31,15 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
 
     # Verify that the conversation widgets exist
     assert len(list(conversation.conversation_view.current_messages.keys())) > 0
diff --git a/client/tests/functional/test_offline_send_reply.py b/client/tests/functional/test_offline_send_reply.py
index f63e24c46..bec6a871b 100644
--- a/client/tests/functional/test_offline_send_reply.py
+++ b/client/tests/functional/test_offline_send_reply.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -30,12 +31,16 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
 
     assert not conversation.reply_box.text_edit.isEnabled()
     assert not conversation.reply_box.send_button.isVisible()
diff --git a/client/tests/functional/test_receive_message.py b/client/tests/functional/test_receive_message.py
index ea39c7abd..88f6220a4 100644
--- a/client/tests/functional/test_receive_message.py
+++ b/client/tests/functional/test_receive_message.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -32,12 +33,16 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
+
     message_id = list(conversation.conversation_view.current_messages.keys())[0]
     message = conversation.conversation_view.current_messages[message_id]
 
diff --git a/client/tests/functional/test_send_reply.py b/client/tests/functional/test_send_reply.py
index ab05bd96a..ba889e476 100644
--- a/client/tests/functional/test_send_reply.py
+++ b/client/tests/functional/test_send_reply.py
@@ -8,6 +8,7 @@
 from flaky import flaky
 from PyQt5.QtCore import Qt
 
+from securedrop_client.gui.widgets import SourceConversationWrapper
 from tests.conftest import TIME_CLICK_ACTION, TIME_RENDER_CONV_VIEW, TIME_RENDER_SOURCE_LIST
 
 
@@ -30,12 +31,15 @@ def check_for_sources():
     qtbot.wait(TIME_CLICK_ACTION)
 
     def check_for_conversation():
-        assert gui.main_view.view_layout.itemAt(0)
-        assert gui.main_view.view_layout.itemAt(0).widget()
+        assert gui.main_view.view_layout.currentIndex() == gui.main_view.CONVERSATION_INDEX
+        assert isinstance(
+            gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex()),
+            SourceConversationWrapper,
+        )
 
     # Get the selected source conversation
     qtbot.waitUntil(check_for_conversation, timeout=TIME_RENDER_CONV_VIEW)
-    conversation = gui.main_view.view_layout.itemAt(0).widget()
+    conversation = gui.main_view.view_layout.widget(gui.main_view.view_layout.currentIndex())
     item_count = len(list(conversation.conversation_view.current_messages.keys()))
 
     # Focus on the reply box and type a message
diff --git a/client/tests/gui/test_actions.py b/client/tests/gui/test_actions.py
index aa7a3cdba..25bb7b955 100644
--- a/client/tests/gui/test_actions.py
+++ b/client/tests/gui/test_actions.py
@@ -102,7 +102,10 @@ def test_deletes_source_when_dialog_accepted(self):
 
         self.action.trigger()
 
-        self._controller.delete_source.assert_called_once_with(self._source)
+        self._controller.delete_sources.assert_called_once()
+        assert (
+            self._source in self._controller.delete_sources.call_args[0][0]
+        ), self._controller.delete_sources.call_args[0][0]
 
     def test_does_not_delete_source_when_dialog_rejected(self):
         # Reject the confirmation dialog from a separate thread.
@@ -110,7 +113,7 @@ def test_does_not_delete_source_when_dialog_rejected(self):
 
         self.action.trigger()
 
-        assert not self._controller.delete_source.called
+        assert not self._controller.delete_sources.called
 
     def test_requires_authenticated_journalist(self):
         controller = mock.MagicMock(Controller, api=None)  # no authenticated user
@@ -122,7 +125,7 @@ def test_requires_authenticated_journalist(self):
         self.action.trigger()
 
         assert not confirmation_dialog.exec.called
-        assert not controller.delete_source.called
+        assert not controller.delete_sources.called
         controller.on_action_requiring_login.assert_called_once()
 
 
diff --git a/client/tests/gui/test_widgets.py b/client/tests/gui/test_widgets.py
index f73abc34e..5579d1937 100644
--- a/client/tests/gui/test_widgets.py
+++ b/client/tests/gui/test_widgets.py
@@ -3,7 +3,7 @@
 """
 
 import math
-from datetime import datetime
+from datetime import datetime, timedelta
 from gettext import gettext as _
 from unittest.mock import Mock, PropertyMock
 
@@ -31,6 +31,8 @@
     LoginButton,
     MainView,
     MessageWidget,
+    MultiSelectView,
+    NothingSelectedView,
     ReplyBoxWidget,
     ReplyTextEdit,
     ReplyTextEditPlaceholder,
@@ -533,21 +535,17 @@ def test_MainView_show_sources_with_none_selected(mocker):
 
     # Set up SourceList so that SourceList.get_selected_source() returns a source
     mv.source_list = SourceList()
+    mv.source_list.controller = mocker.MagicMock()
     source_widget = SourceWidget(
         mocker.MagicMock(), factory.Source(uuid="stub_uuid"), mocker.MagicMock(), mocker.MagicMock()
     )
     source_item = SourceListWidgetItem(mv.source_list)
     mv.source_list.setItemWidget(source_item, source_widget)
     mv.source_list.source_items["stub_uuid"] = source_item
-    mocker.patch.object(mv.source_list, "update_sources")
 
-    mv.empty_conversation_view = mocker.MagicMock()
-
-    mv.show_sources([1, 2, 3])
+    mv.show_sources([factory.Source(), factory.Source(), factory.Source()])
 
-    mv.source_list.update_sources.assert_called_once_with([1, 2, 3])
-    mv.empty_conversation_view.show_no_source_selected_message.assert_called_once_with()
-    mv.empty_conversation_view.show.assert_called_once_with()
+    assert mv.view_layout.currentIndex() == mv.NOTHING_SELECTED_INDEX
 
 
 def test_MainView_show_sources_from_cold_start(mocker):
@@ -570,13 +568,16 @@ def test_MainView_show_sources_with_no_sources_at_all(mocker):
     """
     mv = MainView(None)
     mv.source_list = mocker.MagicMock()
-    mv.empty_conversation_view = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=0)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[])
+
+    mv._on_update_conversation_context = mocker.MagicMock(wraps=mv._on_update_conversation_context)
 
     mv.show_sources([])
 
     mv.source_list.update_sources.assert_called_once_with([])
-    mv.empty_conversation_view.show_no_sources_message.assert_called_once_with()
-    mv.empty_conversation_view.show.assert_called_once_with()
+    mv._on_update_conversation_context.assert_called()
+    assert mv.view_layout.currentIndex() == mv.NO_SOURCES_INDEX
 
 
 def test_MainView_show_sources_when_sources_are_deleted(mocker):
@@ -584,18 +585,20 @@ def test_MainView_show_sources_when_sources_are_deleted(mocker):
     Ensure that show_sources also deletes the SourceConversationWrapper for a deleted source.
     """
     mv = MainView(None)
+    sources = [factory.Source(), factory.Source(), factory.Source(), factory.Source()]
     mv.source_list = mocker.MagicMock()
-    mv.empty_conversation_view = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=len(sources))
+    mv.source_list.getSelectedItems = mocker.MagicMock(return_value=[])
     mv.source_list.update_sources = mocker.MagicMock(return_value=[])
     mv.delete_conversation = mocker.MagicMock()
 
-    mv.show_sources([1, 2, 3, 4])
+    mv.show_sources(sources)
 
-    mv.source_list.update_sources = mocker.MagicMock(return_value=[4])
+    mv.source_list.update_sources = mocker.MagicMock(return_value=[sources[-1]])
 
-    mv.show_sources([1, 2, 3])
+    mv.show_sources(sources[:-1])
 
-    mv.delete_conversation.assert_called_once_with(4)
+    mv.delete_conversation.assert_called_once_with(sources[-1])
 
 
 def test_MainView_delete_conversation_when_conv_wrapper_exists(mocker):
@@ -635,17 +638,66 @@ def test_MainView_on_source_changed(mocker):
     """
     mv = MainView(None)
     mv.set_conversation = mocker.MagicMock()
+    source = factory.Source()
     mv.source_list = mocker.MagicMock()
-    mv.source_list.get_selected_source = mocker.MagicMock(return_value=factory.Source())
+    mv.source_list.get_selected_source = mocker.MagicMock(return_value=source)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[source])
+    mv.source_list.count = mocker.MagicMock(return_value=3)
     mv.controller = mocker.MagicMock(is_authenticated=True)
     mocker.patch("securedrop_client.gui.widgets.source_exists", return_value=True)
-    scw = mocker.MagicMock()
-    mocker.patch("securedrop_client.gui.widgets.SourceConversationWrapper", return_value=scw)
-
     mv.on_source_changed()
 
     mv.source_list.get_selected_source.assert_called_once_with()
-    mv.set_conversation.assert_called_once_with(scw)
+    mv.set_conversation.assert_called_once()
+    assert mv.set_conversation.call_args[0][0].source == source
+
+
+def test_MainView_on_source_changed_shows_correct_context(mocker, homedir, session, session_maker):
+    """
+    Ensure correct context presented based on number of sources selected.
+    """
+    # Build sourcelist
+    sources = []
+    for i in range(10):
+        s = factory.Source()
+        sources.append(s)
+        session.add(s)
+
+    session.commit()
+
+    mv = MainView(None)
+
+    mock_gui = mocker.MagicMock()
+    controller = logic.Controller("http://localhost", mock_gui, session_maker, homedir, None)
+    controller.api = mocker.MagicMock()
+    controller.session.refresh = mocker.MagicMock()
+
+    mv.setup(controller)
+    mv.show()
+
+    assert mv.view_layout.currentIndex() == mv.NO_SOURCES_INDEX
+
+    mv.source_list.update_sources(sources)
+    mv.show_sources(sources)
+
+    assert mv.view_layout.currentIndex() == mv.NOTHING_SELECTED_INDEX
+
+    # Select a source, ensure the correct view context is shown
+    mv.source_list.setCurrentRow(0)
+    assert mv.view_layout.currentIndex() == mv.CONVERSATION_INDEX
+
+    mv.source_list.setCurrentRow(1)
+
+    assert mv.view_layout.currentIndex() == mv.CONVERSATION_INDEX
+    assert (
+        mv.controller.session.refresh.call_args[0][0]
+        == mv.source_list.itemWidget(mv.source_list.item(1)).source
+    )
+
+    # Now ensure the "multiple sources selected" view is shown
+    mv.source_list.selectAll()
+
+    assert mv.view_layout.currentIndex() == mv.MULTI_SELECTED_INDEX
 
 
 def test_MainView_on_source_changed_does_not_raise_InvalidRequestError(mocker):
@@ -655,21 +707,24 @@ def test_MainView_on_source_changed_does_not_raise_InvalidRequestError(mocker):
     """
     mv = MainView(None)
     mv.set_conversation = mocker.MagicMock()
-    mv.source_list = mocker.MagicMock()
-    mv.source_list.get_selected_source = mocker.MagicMock(return_value=factory.Source())
+    source = factory.Source()
+    mv.source_list.count = mocker.MagicMock(return_value=1)
+    mv.source_list.get_selected_source = mocker.MagicMock(return_value=source)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[source])
     mv.controller = mocker.MagicMock(is_authenticated=True)
     ex = sqlalchemy.exc.InvalidRequestError()
-    mv.controller.session.refresh.side_effect = ex
+    mv.controller.session = mocker.MagicMock()
+    mv.controller.session.refresh = mocker.MagicMock(side_effect=ex)
 
     mocker.patch("securedrop_client.gui.widgets.source_exists", return_value=True)
-    scw = mocker.MagicMock()
-    mocker.patch("securedrop_client.gui.widgets.SourceConversationWrapper", return_value=scw)
     mock_logger = mocker.MagicMock()
+
     mocker.patch("securedrop_client.gui.widgets.logger", mock_logger)
 
     mv.on_source_changed()
+    mv.controller.session.refresh.assert_called()
 
-    assert mock_logger.debug.call_count == 1
+    assert mock_logger.debug.call_count == 1, mock_logger.debug.call_args
 
 
 def test_MainView_on_source_changed_when_source_no_longer_exists(mocker):
@@ -679,11 +734,12 @@ def test_MainView_on_source_changed_when_source_no_longer_exists(mocker):
     mv = MainView(None)
     mv.set_conversation = mocker.MagicMock()
     mv.source_list = mocker.MagicMock()
+    mv.source_list.selectedItems = mocker.MagicMock()
     mv.source_list.get_selected_source = mocker.MagicMock(return_value=None)
 
     mv.on_source_changed()
 
-    mv.source_list.get_selected_source.assert_called_once_with()
+    assert mv.view_layout.currentIndex() == mv.NOTHING_SELECTED_INDEX
     mv.set_conversation.assert_not_called()
 
 
@@ -692,9 +748,13 @@ def test_MainView_on_source_changed_updates_conversation_view(mocker, session):
     Test that the source collection is displayed in the conversation view.
     """
     mv = MainView(None)
+    source = factory.Source()
+
     # mv.source_list = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=1)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[source])
+    mv.source_list.get_selected_source = mocker.MagicMock(return_value=source)
     mv.controller = mocker.MagicMock(is_authenticated=True)
-    source = factory.Source()
     session.add(source)
     file = factory.File(source=source, filename="0-mock-doc.gpg")
     message = factory.Message(source=source, filename="0-mock-msg.gpg")
@@ -704,9 +764,6 @@ def test_MainView_on_source_changed_updates_conversation_view(mocker, session):
     session.add(reply)
     session.commit()
     source_selected = mocker.patch("securedrop_client.gui.widgets.SourceList.source_selected")
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source
-    )
     add_message_fn = mocker.patch(
         "securedrop_client.gui.widgets.ConversationView.add_message", new=mocker.Mock()
     )
@@ -732,56 +789,54 @@ def test_MainView_on_source_changed_SourceConversationWrapper_is_preserved(mocke
     SourceConversationWrapper when we click away from a given source. We should create it the
     first time, and then it should persist.
     """
-    mv = MainView(None)
-    mv.set_conversation = mocker.MagicMock()
-    source_selected = mocker.patch("securedrop_client.gui.widgets.SourceList.source_selected")
-    mv.controller = mocker.MagicMock(is_authenticated=True)
     source = factory.Source()
     source2 = factory.Source()
     session.add(source)
     session.add(source2)
     session.commit()
 
-    source_conversation_init = mocker.patch(
-        "securedrop_client.gui.widgets.SourceConversationWrapper.__init__", return_value=None
-    )
+    mv = MainView(None)
+    mv.source_list.count = mocker.MagicMock(return_value=2)
+    mv.source_list.source_selected = mocker.MagicMock()
 
-    # We expect on the first call, SourceConversationWrapper.__init__ should be called.
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source
+    # Side effect == first one return value, then the second return value.
+    # Simulate repeated calls
+    mv.source_list.get_selected_source = mocker.MagicMock(side_effect=[source, source2, source])
+
+    # Called twice per redraw event
+    mv.source_list.selectedItems = mocker.MagicMock(
+        side_effect=[[source], [source], [source2], [source2], [source], [source]]
     )
+    mv.set_conversation = mocker.MagicMock(wraps=mv.set_conversation)
+
+    mv.controller = mocker.MagicMock(is_authenticated=True)
+
     mv.on_source_changed()
     assert mv.set_conversation.call_count == 1
-    assert source_conversation_init.call_count == 1
-    source_selected.emit.assert_called_once_with(source.uuid)
+    assert source.uuid in mv.source_conversations
+    # We haven't created this widget yet since the conversation hasn't been clicked yet
+    assert source2.uuid not in mv.source_conversations
+    mv.source_list.source_selected.emit.assert_called_once_with(source.uuid)
 
     # Reset mocked objects for the next call of on_source_changed.
-    source_conversation_init.reset_mock()
     mv.set_conversation.reset_mock()
-    source_selected.reset_mock()
+    mv.source_list.source_selected.reset_mock()
 
-    # Now click on another source (source2). Since this is the first time we have clicked
-    # on source2, we expect on the first call, SourceConversationWrapper.__init__ should be
-    # called.
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source2
-    )
+    # Now click on another source (source2) ensure correct widget is constructed.
     mv.on_source_changed()
     assert mv.set_conversation.call_count == 1
-    assert source_conversation_init.call_count == 1
-    source_selected.emit.assert_called_once_with(source2.uuid)
+    assert source.uuid in mv.source_conversations
+    assert source2.uuid in mv.source_conversations
+    mv.source_list.source_selected.emit.assert_called_once_with(source2.uuid)
 
     # Reset mocked objects for the next call of on_source_changed.
-    source_conversation_init.reset_mock()
     mv.set_conversation.reset_mock()
-    source_selected.reset_mock()
+    mv.source_list.source_selected.reset_mock()
 
     # But if we click back (call on_source_changed again) to the source,
     # its SourceConversationWrapper should _not_ be recreated.
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source
-    )
     conversation_wrapper = mv.source_conversations[source.uuid]
+    assert conversation_wrapper is not None
     conversation_wrapper.conversation_view = mocker.MagicMock()
     conversation_wrapper.conversation_view.update_conversation = mocker.MagicMock()
 
@@ -791,8 +846,7 @@ def test_MainView_on_source_changed_SourceConversationWrapper_is_preserved(mocke
 
     # Conversation should be redrawn even for existing source (bug #467).
     assert conversation_wrapper.conversation_view.update_conversation.call_count == 1
-    assert source_conversation_init.call_count == 0
-    source_selected.emit.assert_called_once_with(source.uuid)
+    mv.source_list.source_selected.emit.assert_called_once_with(source.uuid)
 
 
 def test_MainView_refresh_source_conversations(homedir, mocker, qtbot, session_maker, session):
@@ -802,7 +856,8 @@ def test_MainView_refresh_source_conversations(homedir, mocker, qtbot, session_m
     source1 = factory.Source(uuid="rsc-123")
     session.add(source1)
 
-    source2 = factory.Source(uuid="rsc-456")
+    # Less recent update time (default is datetime.now())
+    source2 = factory.Source(uuid="rsc-456", last_updated=(datetime.now() - timedelta(days=1)))
     session.add(source2)
 
     session.commit()
@@ -819,29 +874,32 @@ def test_MainView_refresh_source_conversations(homedir, mocker, qtbot, session_m
     mv.source_list.update_sources(sources)
     mv.show()
 
-    # get the conversations created
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source1
+    # Inspect
+    mv.on_source_changed = mocker.MagicMock(wraps=mv.on_source_changed)
+    mv.source_list.itemSelectionChanged = mocker.MagicMock(
+        wraps=mv.source_list.itemSelectionChanged
     )
-    mv.on_source_changed()
 
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source2
-    )
-    mv.on_source_changed()
+    # Select one source, then another
+    mv.source_list.setCurrentRow(0)
+
+    assert mv.source_list.get_selected_source() == source1
+    # assert mv.on_source_changed.call_count == 1
+    mv.source_list.setCurrentRow(1)
+    assert mv.source_list.get_selected_source() == source2
 
+    # assert mv.on_source_changed.call_count == 2
     assert len(mv.source_conversations) == 2
 
+    # Nothing selected
+    mv.source_list.setCurrentRow(-1)
+
     # refresh with no source selected
-    mocker.patch("securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=None)
     mv.refresh_source_conversations()
+    assert mv.view_layout.currentIndex() == mv.NOTHING_SELECTED_INDEX
 
-    # refresh with source1 selected while its conversation is being deleted
-    mocker.patch(
-        "securedrop_client.gui.widgets.SourceList.get_selected_source", return_value=source1
-    )
-    mv.on_source_changed()
-
+    # # refresh with source1 selected while its conversation is being deleted
+    mv.source_list.setCurrentRow(0)
     assert len(mv.source_list.source_items) == 2
 
     scw1 = mv.source_conversations[source1.uuid]
@@ -931,31 +989,58 @@ def test_MainView_set_conversation(mocker):
     (i.e. that area of the screen on the right hand side).
     """
     mv = MainView(None)
-    mv.view_layout = mocker.MagicMock()
 
-    mock_widget = mocker.MagicMock()
-    mv.set_conversation(mock_widget)
+    scw = SourceConversationWrapper(factory.Source(), mocker.MagicMock())
+    mv.set_conversation(scw)
 
-    mv.view_layout.takeAt.assert_called_once_with(0)
-    mv.view_layout.addWidget.assert_called_once_with(mock_widget)
+    assert mv.view_layout.widget(mv.CONVERSATION_INDEX) == scw
 
 
-def test_EmptyConversationView_show_no_sources_message(mocker):
-    ecv = EmptyConversationView()
+def test_EmptyConversationView(mocker):
+    mv = MainView(None)
+    mv.source_list = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=0)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[])
+    mv.show()
+    assert mv.view_layout.count() == 4  # Sanity - are all the pages there?
+    mv.show_sources([])
+    assert mv.view_layout.currentIndex() == mv.NO_SOURCES_INDEX
+    assert isinstance(mv.view_layout.widget(mv.view_layout.currentIndex()), EmptyConversationView)
 
-    ecv.show_no_sources_message()
 
-    assert not ecv.no_sources.isHidden()
-    assert ecv.no_source_selected.isHidden()
+def test_NothingSelectedView(mocker):
+    mv = MainView(None)
+    mv.show()
+    mv.source_list = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=4)
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=[])
+
+    # Sanity check - make sure that all base QStackedWidget pages
+    # (Empty, NothingSelected, MultiSelected, Conversation) are rendered
+    assert mv.view_layout.count() == 4
+
+    mv.show_sources([factory.Source(), factory.Source(), factory.Source()])
+    assert isinstance(mv.view_layout.widget(mv.view_layout.currentIndex()), NothingSelectedView)
+    assert mv.view_layout.currentIndex() == mv.NOTHING_SELECTED_INDEX
 
 
-def test_EmptyConversationView_show_no_source_selected_message(mocker):
-    ecv = EmptyConversationView()
+def test_MultiSelectedView(mocker):
+    mv = MainView(None)
+    sources = [factory.Source(), factory.Source(), factory.Source()]
+    mv.source_list = mocker.MagicMock()
+    mv.source_list.count = mocker.MagicMock(return_value=len(sources))
+    mv.source_list.selectedItems = mocker.MagicMock(return_value=sources[:-1])
+    mv._on_update_conversation_context = mocker.MagicMock(wraps=mv._on_update_conversation_context)
+    mv.show_sources(sources)
 
-    ecv.show_no_source_selected_message()
+    mv.show()
 
-    assert ecv.no_sources.isHidden()
-    assert not ecv.no_source_selected.isHidden()
+    # Sanity check - make sure that all base QStackedWidget pages
+    # (Empty, NothingSelected, MultiSelected, Conversation) are rendered
+    assert mv.view_layout.count() == 4
+    mv._on_update_conversation_context.assert_called()
+    assert isinstance(mv.view_layout.widget(mv.view_layout.currentIndex()), MultiSelectView)
+    assert mv.view_layout.currentIndex() == mv.MULTI_SELECTED_INDEX
 
 
 def test_SourceList_get_selected_source(mocker):
@@ -3791,14 +3876,12 @@ def test_SourceConversationWrapper_on_source_deleted(mocker):
     mv.source_list = mocker.MagicMock()
     mv.source_list.get_selected_source = mocker.MagicMock(return_value=source)
     mv.controller = mocker.MagicMock(is_authenticated=True)
-    mv.show()
+
+    # Detached sourceconversationwrapper, just for unit testing
     scw = SourceConversationWrapper(source, mv.controller, None)
-    mocker.patch("securedrop_client.gui.widgets.SourceConversationWrapper", return_value=scw)
     mv.on_source_changed()
     scw.on_source_deleted("123")
 
-    assert mv.isVisible()
-    assert scw.isVisible()
     assert not scw.conversation_title_bar.isHidden()
     assert not scw.reply_box.isHidden()
     assert not scw.reply_box.text_edit.isEnabled()
@@ -3847,15 +3930,13 @@ def test_SourceConversationWrapper_on_conversation_deleted(mocker):
     mv.source_list = mocker.MagicMock()
     mv.source_list.get_selected_source = mocker.MagicMock(return_value=source)
     mv.controller = mocker.MagicMock(is_authenticated=True)
+    mocker.patch("securedrop_client.gui.widgets.source_exists", return_value=True)
     mv.show()
     scw = SourceConversationWrapper(source, mv.controller, None)
-    mocker.patch("securedrop_client.gui.widgets.SourceConversationWrapper", return_value=scw)
     mv.on_source_changed()
 
     scw.on_conversation_deleted("123")
 
-    assert mv.isVisible()
-    assert scw.isVisible()
     assert not scw.conversation_title_bar.isHidden()
     assert not scw.reply_box.isHidden()
     assert not scw.reply_box.text_edit.isEnabled()
diff --git a/client/tests/integration/test_placeholder.py b/client/tests/integration/test_placeholder.py
index 6d0c69b6c..747e0bb38 100644
--- a/client/tests/integration/test_placeholder.py
+++ b/client/tests/integration/test_placeholder.py
@@ -2,7 +2,7 @@
 
 
 def test_styles_for_placeholder(main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     reply_box = wrapper.reply_box
     reply_text_edit = reply_box.text_edit
 
@@ -34,7 +34,9 @@ def test_styles_for_placeholder(main_window):
 
 
 def test_styles_for_placeholder_no_key(main_window_no_key):
-    wrapper = main_window_no_key.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window_no_key.main_view.view_layout.itemAt(
+        main_window_no_key.main_view.CONVERSATION_INDEX
+    ).widget()
     reply_box = wrapper.reply_box
     reply_text_edit = reply_box.text_edit
 
diff --git a/client/tests/integration/test_styles_file_download_button.py b/client/tests/integration/test_styles_file_download_button.py
index e4e99d1d9..58ca631fc 100644
--- a/client/tests/integration/test_styles_file_download_button.py
+++ b/client/tests/integration/test_styles_file_download_button.py
@@ -5,7 +5,7 @@
 
 
 def test_styles(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     file_widget = conversation_scrollarea.widget().layout().itemAt(0).widget()
     download_button = file_widget.download_button
@@ -28,7 +28,7 @@ def test_styles(mocker, main_window):
 
 
 def test_styles_animated(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     file_widget = conversation_scrollarea.widget().layout().itemAt(0).widget()
     download_button = file_widget.download_button
diff --git a/client/tests/integration/test_styles_reply_status_bar.py b/client/tests/integration/test_styles_reply_status_bar.py
index 2d7d8f458..a5f8bf742 100644
--- a/client/tests/integration/test_styles_reply_status_bar.py
+++ b/client/tests/integration/test_styles_reply_status_bar.py
@@ -2,7 +2,7 @@
 
 
 def test_styles(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     reply_widget = conversation_scrollarea.widget().layout().itemAt(2).widget()
     reply_widget.sender_is_current_user = False
@@ -25,7 +25,7 @@ def test_styles(mocker, main_window):
 
 
 def test_styles_for_replies_from_authenticated_user(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     reply_widget = conversation_scrollarea.widget().layout().itemAt(2).widget()
     reply_widget.sender_is_current_user = True
diff --git a/client/tests/integration/test_styles_sdclient.py b/client/tests/integration/test_styles_sdclient.py
index cab18faa8..299b99ca8 100644
--- a/client/tests/integration/test_styles_sdclient.py
+++ b/client/tests/integration/test_styles_sdclient.py
@@ -64,11 +64,18 @@ def test_class_name_matches_css_object_name(mocker, main_window):
     assert main_view.__class__.__name__ == "MainView"
     assert main_view.objectName() == "MainView"
     assert "MainView" in main_view.view_holder.objectName()
-    empty_conversation_view = main_view.empty_conversation_view
-    empty_conversation_view.__class__.__name__ == "EmptyConversationView"
-    empty_conversation_view.objectName() == "EmptyConversationView"
-    "EmptyConversationView" in empty_conversation_view.no_sources.objectName()
-    "EmptyConversationView" in empty_conversation_view.no_source_selected.objectName()
+
+    # All views use the "EmptyConversationView" styling
+    for index in [
+        main_view.NO_SOURCES_INDEX,
+        main_view.NOTHING_SELECTED_INDEX,
+        main_view.MULTI_SELECTED_INDEX,
+    ]:
+        view = main_view.view_layout.widget(index)
+        view.objectName() == "EmptyConversationView"
+        "EmptyConversationView" in view.objectName()
+        "EmptyConversationView" in view.objectName()
+
     source_list = main_view.source_list
 
     source_widget = source_list.itemWidget(source_list.item(0))
@@ -83,7 +90,7 @@ def test_class_name_matches_css_object_name(mocker, main_window):
     assert star.__class__.__name__ == "StarToggleButton"
     assert "StarToggleButton" in star.objectName()
 
-    wrapper = main_view.view_layout.itemAt(0).widget()
+    wrapper = main_view.view_layout.itemAt(main_view.CONVERSATION_INDEX).widget()
     assert wrapper.__class__.__name__ == "SourceConversationWrapper"
     assert wrapper.deletion_indicator.objectName() == "SourceDeletionIndicator"
     reply_box = wrapper.reply_box
@@ -229,14 +236,12 @@ def test_styles_for_main_view(mocker, main_window):
     main_view = main_window.main_view
     assert main_view.minimumSize().height() == 558
     assert main_view.view_holder.palette().color(QPalette.Background).name() == "#f9f9ff"
-
-    assert main_view.empty_conversation_view.minimumSize().width() == 640
-    no_sources = main_view.empty_conversation_view.no_sources
+    no_sources = main_view.view_layout.widget(0)
     assert no_sources.layout().count() == 5
     no_sources_instructions = no_sources.layout().itemAt(0).widget()
     assert no_sources_instructions.font().family() == "Montserrat"
     assert QFont.DemiBold - 1 == no_sources_instructions.font().weight()
-    assert no_sources_instructions.font().pixelSize() == 35
+    assert no_sources_instructions.font().pixelSize() == 30
     assert no_sources_instructions.palette().color(QPalette.Foreground).name() == "#a5b3e9"
     no_sources_spacer1 = no_sources.layout().itemAt(1)
     assert no_sources_spacer1.minimumSize().height() == 35
@@ -244,7 +249,7 @@ def test_styles_for_main_view(mocker, main_window):
     no_sources_instruction_details1 = no_sources.layout().itemAt(2).widget()
     assert no_sources_instruction_details1.font().family() == "Montserrat"
     assert QFont.Normal == no_sources_instruction_details1.font().weight()
-    assert no_sources_instruction_details1.font().pixelSize() == 35
+    assert no_sources_instruction_details1.font().pixelSize() == 30
     assert no_sources_instruction_details1.palette().color(QPalette.Foreground).name() == "#a5b3e9"
     no_sources_spacer2 = no_sources.layout().itemAt(3)
     assert no_sources_spacer2.minimumSize().height() == 35
@@ -252,34 +257,34 @@ def test_styles_for_main_view(mocker, main_window):
     no_sources_instruction_details2 = no_sources.layout().itemAt(4).widget()
     assert no_sources_instruction_details2.font().family() == "Montserrat"
     assert QFont.Normal == no_sources_instruction_details2.font().weight()
-    assert no_sources_instruction_details2.font().pixelSize() == 35
+    assert no_sources_instruction_details2.font().pixelSize() == 30
     assert no_sources_instruction_details2.palette().color(QPalette.Foreground).name() == "#a5b3e9"
 
-    no_source_selected = main_view.empty_conversation_view.no_source_selected
-    assert no_source_selected.layout().count() == 6
+    no_source_selected = main_view.view_layout.widget(1)
+    assert no_source_selected.layout().count() == 8
     no_source_selected_instructions = no_source_selected.layout().itemAt(0).widget()
     assert no_source_selected_instructions.font().family() == "Montserrat"
     assert QFont.DemiBold - 1 == no_source_selected_instructions.font().weight()
-    assert no_source_selected_instructions.font().pixelSize() == 35
+    assert no_source_selected_instructions.font().pixelSize() == 30
     assert no_source_selected_instructions.palette().color(QPalette.Foreground).name() == "#a5b3e9"
     no_source_selected_spacer1 = no_source_selected.layout().itemAt(1)
     assert no_source_selected_spacer1.minimumSize().height() == 35
     assert no_source_selected_spacer1.maximumSize().height() == 35
     bullet1_bullet = no_source_selected.layout().itemAt(2).widget().layout().itemAt(0).widget()
     assert bullet1_bullet.getContentsMargins() == (0, 4, 0, 0)
-    bullet1_bullet.font().pixelSize() == 35
+    bullet1_bullet.font().pixelSize() == 30
     QFont.Bold == bullet1_bullet.font().weight()
     assert bullet1_bullet.font().family() == "Montserrat"
     assert bullet1_bullet.palette().color(QPalette.Foreground).name() == "#a5b3e9"
     bullet2_bullet = no_source_selected.layout().itemAt(3).widget().layout().itemAt(0).widget()
     assert bullet2_bullet.getContentsMargins() == (0, 4, 0, 0)
-    bullet2_bullet.font().pixelSize() == 35
+    bullet2_bullet.font().pixelSize() == 30
     QFont.Bold == bullet2_bullet.font().weight()
     assert bullet2_bullet.font().family() == "Montserrat"
     assert bullet2_bullet.palette().color(QPalette.Foreground).name() == "#a5b3e9"
     bullet3_bullet = no_source_selected.layout().itemAt(4).widget().layout().itemAt(0).widget()
     assert bullet3_bullet.getContentsMargins() == (0, 4, 0, 0)
-    bullet3_bullet.font().pixelSize() == 35
+    bullet3_bullet.font().pixelSize() == 30
     QFont.Bold == bullet3_bullet.font().weight()
     assert bullet3_bullet.font().family() == "Montserrat"
     assert bullet3_bullet.palette().color(QPalette.Foreground).name() == "#a5b3e9"
@@ -314,7 +319,7 @@ def test_styles_source_list(mocker, main_window):
 
 
 def test_styles_for_conversation_view(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     deletion_indicator = wrapper.deletion_indicator
     assert deletion_indicator.deletion_message.font().family() == "Montserrat"
     assert QFont.Normal == deletion_indicator.deletion_message.font().weight()
diff --git a/client/tests/integration/test_styles_speech_bubble_message.py b/client/tests/integration/test_styles_speech_bubble_message.py
index c1d1bfc7e..35b015056 100644
--- a/client/tests/integration/test_styles_speech_bubble_message.py
+++ b/client/tests/integration/test_styles_speech_bubble_message.py
@@ -2,7 +2,7 @@
 
 
 def test_styles(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     speech_bubble = conversation_scrollarea.widget().layout().itemAt(1).widget()
 
diff --git a/client/tests/integration/test_styles_speech_bubble_status_bar.py b/client/tests/integration/test_styles_speech_bubble_status_bar.py
index 0930db3f7..aece7cc4a 100644
--- a/client/tests/integration/test_styles_speech_bubble_status_bar.py
+++ b/client/tests/integration/test_styles_speech_bubble_status_bar.py
@@ -2,7 +2,7 @@
 
 
 def test_styles(mocker, main_window):
-    wrapper = main_window.main_view.view_layout.itemAt(0).widget()
+    wrapper = main_window.main_view.view_layout.widget(main_window.main_view.CONVERSATION_INDEX)
     conversation_scrollarea = wrapper.conversation_view._scroll
     speech_bubble = conversation_scrollarea.widget().layout().itemAt(1).widget()
 
diff --git a/client/tests/test_logic.py b/client/tests/test_logic.py
index 4c03b4fa9..b7c11ba0b 100644
--- a/client/tests/test_logic.py
+++ b/client/tests/test_logic.py
@@ -1919,13 +1919,13 @@ def test_Controller_delete_source_not_logged_in(homedir, config, mocker, session
     source_db_object = mocker.MagicMock()
     co.on_action_requiring_login = mocker.MagicMock()
     co.api = None
-    co.delete_source(source_db_object)
+    co.delete_sources(set([source_db_object]))
     co.on_action_requiring_login.assert_called_with()
 
 
 def test_Controller_delete_source(homedir, config, mocker, session_maker, session):
     """
-    Check that a DeleteSourceJob is submitted when delete_source is called.
+    Check that a DeleteSourceJob is submitted when delete_sources is called.
     """
     mock_gui = mocker.MagicMock()
     co = Controller("http://localhost", mock_gui, session_maker, homedir, None)
@@ -1945,7 +1945,7 @@ def test_Controller_delete_source(homedir, config, mocker, session_maker, sessio
     session.add(source)
     session.commit()
 
-    co.delete_source(source)
+    co.delete_sources(set([source]))
 
     assert len(source_deleted_emissions) == 1
     assert source_deleted_emissions[0] == [source.uuid]