diff --git a/.coverage b/.coverage
index 0aee14d..dedd60e 100644
Binary files a/.coverage and b/.coverage differ
diff --git a/src/maildir_gtd/app.py b/src/maildir_gtd/app.py
index abf6021..cd0eb8f 100644
--- a/src/maildir_gtd/app.py
+++ b/src/maildir_gtd/app.py
@@ -3,6 +3,7 @@ from .message_store import MessageStore
 from .widgets.ContentContainer import ContentContainer
 from .widgets.EnvelopeListItem import EnvelopeListItem, GroupHeader
 from .screens.LinkPanel import LinkPanel
+from .screens.ConfirmDialog import ConfirmDialog
 from .actions.task import action_create_task
 from .actions.open import action_open
 from .actions.delete import delete_current
@@ -116,10 +117,11 @@ class EmailViewerApp(App):
 
     BINDINGS.extend(
         [
-            Binding("space", "scroll_page_down", "Scroll page down"),
+            Binding("pagedown", "scroll_page_down", "Scroll page down"),
             Binding("b", "scroll_page_up", "Scroll page up"),
             Binding("s", "toggle_sort_order", "Toggle Sort Order"),
-            Binding("x", "toggle_selection", "Toggle selection"),
+            Binding("x", "toggle_selection", "Toggle selection", show=False),
+            Binding("space", "toggle_selection", "Toggle selection"),
             Binding("escape", "clear_selection", "Clear selection"),
         ]
     )
@@ -298,6 +300,16 @@ class EmailViewerApp(App):
         # self.current_message_id = message_id
         self.highlighted_message_index = highlighted_index
 
+    def on_key(self, event) -> None:
+        """Handle key events to intercept space on the envelopes list."""
+        # Intercept space key when envelopes list is focused to prevent default select behavior
+        if event.key == "space":
+            focused = self.focused
+            if focused and focused.id == "envelopes_list":
+                event.prevent_default()
+                event.stop()
+                self.action_toggle_selection()
+
     @work(exclusive=False)
     async def fetch_envelopes(self) -> None:
         msglist = self.query_one("#envelopes_list", ListView)
@@ -476,66 +488,165 @@ class EmailViewerApp(App):
             self.current_message_index = prev_idx
 
     async def action_delete(self) -> None:
-        """Delete the current message and update UI consistently."""
-        # Call the delete_current function which uses our Himalaya client module
-        worker = delete_current(self)
+        """Delete the current or selected messages."""
+        if self.selected_messages:
+            # --- Multi-message delete: show confirmation ---
+            count = len(self.selected_messages)
+
+            def do_delete(confirmed: bool) -> None:
+                if confirmed:
+                    self.run_worker(self._delete_selected_messages())
+
+            self.push_screen(
+                ConfirmDialog(
+                    title="Delete Messages",
+                    message=f"Delete {count} selected message{'s' if count > 1 else ''}?",
+                    confirm_label="Delete",
+                    cancel_label="Cancel",
+                ),
+                do_delete,
+            )
+        else:
+            # --- Single message delete (no confirmation needed) ---
+            worker = delete_current(self)
+            await worker.wait()
+
+    async def _delete_selected_messages(self) -> None:
+        """Delete all selected messages."""
+        message_ids_to_delete = list(self.selected_messages)
+        next_id_to_select = None
+
+        if message_ids_to_delete:
+            highest_deleted_id = max(message_ids_to_delete)
+            metadata = self.message_store.get_metadata(highest_deleted_id)
+            if metadata:
+                next_id, _ = self.message_store.find_next_valid_id(metadata["index"])
+                if next_id is None:
+                    next_id, _ = self.message_store.find_prev_valid_id(
+                        metadata["index"]
+                    )
+                next_id_to_select = next_id
+
+        # Delete each message
+        success_count = 0
+        for mid in message_ids_to_delete:
+            message, success = await himalaya_client.delete_message(mid)
+            if success:
+                success_count += 1
+            else:
+                self.show_status(f"Failed to delete message {mid}: {message}", "error")
+
+        if success_count > 0:
+            self.show_status(
+                f"Deleted {success_count} message{'s' if success_count > 1 else ''}"
+            )
+            self.selected_messages.clear()
+            self.refresh_list_view_items()
+
+        # Refresh the envelope list
+        worker = self.fetch_envelopes()
         await worker.wait()
 
+        # After refresh, select the next message
+        if next_id_to_select:
+            new_metadata = self.message_store.get_metadata(next_id_to_select)
+            if new_metadata:
+                self.current_message_id = next_id_to_select
+            else:
+                self.action_oldest()
+        else:
+            self.action_oldest()
+
     async def action_archive(self) -> None:
         """Archive the current or selected messages and update UI consistently."""
+        if self.selected_messages:
+            # --- Multi-message archive: show confirmation ---
+            count = len(self.selected_messages)
+
+            def do_archive(confirmed: bool) -> None:
+                if confirmed:
+                    self.run_worker(self._archive_selected_messages())
+
+            self.push_screen(
+                ConfirmDialog(
+                    title="Archive Messages",
+                    message=f"Archive {count} selected message{'s' if count > 1 else ''}?",
+                    confirm_label="Archive",
+                    cancel_label="Cancel",
+                ),
+                do_archive,
+            )
+        else:
+            # --- Single message archive (no confirmation needed) ---
+            await self._archive_single_message()
+
+    async def _archive_selected_messages(self) -> None:
+        """Archive all selected messages."""
+        message_ids_to_archive = list(self.selected_messages)
         next_id_to_select = None
 
-        if self.selected_messages:
-            # --- Multi-message archive ---
-            message_ids_to_archive = list(self.selected_messages)
-
-            if message_ids_to_archive:
-                highest_archived_id = max(message_ids_to_archive)
-                metadata = self.message_store.get_metadata(highest_archived_id)
-                if metadata:
-                    next_id, _ = self.message_store.find_next_valid_id(
+        if message_ids_to_archive:
+            highest_archived_id = max(message_ids_to_archive)
+            metadata = self.message_store.get_metadata(highest_archived_id)
+            if metadata:
+                next_id, _ = self.message_store.find_next_valid_id(metadata["index"])
+                if next_id is None:
+                    next_id, _ = self.message_store.find_prev_valid_id(
                         metadata["index"]
                     )
-                    if next_id is None:
-                        next_id, _ = self.message_store.find_prev_valid_id(
-                            metadata["index"]
-                        )
-                    next_id_to_select = next_id
+                next_id_to_select = next_id
 
-            message, success = await himalaya_client.archive_messages(
-                [str(mid) for mid in message_ids_to_archive]
+        message, success = await himalaya_client.archive_messages(
+            [str(mid) for mid in message_ids_to_archive]
+        )
+
+        if success:
+            self.show_status(
+                message or f"Archived {len(message_ids_to_archive)} messages"
             )
-
-            if success:
-                self.show_status(message or "Success archived")
-                self.selected_messages.clear()
-            else:
-                self.show_status(f"Failed to archive messages: {message}", "error")
-                return
-
+            self.selected_messages.clear()
+            self.refresh_list_view_items()
         else:
-            # --- Single message archive ---
-            if not self.current_message_id:
-                self.show_status("No message selected to archive.", "error")
-                return
+            self.show_status(f"Failed to archive messages: {message}", "error")
+            return
 
-            current_id = self.current_message_id
-            current_idx = self.current_message_index
+        # Refresh the envelope list
+        worker = self.fetch_envelopes()
+        await worker.wait()
 
-            next_id, _ = self.message_store.find_next_valid_id(current_idx)
-            if next_id is None:
-                next_id, _ = self.message_store.find_prev_valid_id(current_idx)
-            next_id_to_select = next_id
-
-            message, success = await himalaya_client.archive_messages([str(current_id)])
-
-            if success:
-                self.show_status(message or "Archived")
+        # After refresh, select the next message
+        if next_id_to_select:
+            new_metadata = self.message_store.get_metadata(next_id_to_select)
+            if new_metadata:
+                self.current_message_id = next_id_to_select
             else:
-                self.show_status(
-                    f"Failed to archive message {current_id}: {message}", "error"
-                )
-                return
+                self.action_oldest()
+        else:
+            self.action_oldest()
+
+    async def _archive_single_message(self) -> None:
+        """Archive the current single message."""
+        if not self.current_message_id:
+            self.show_status("No message selected to archive.", "error")
+            return
+
+        current_id = self.current_message_id
+        current_idx = self.current_message_index
+
+        next_id, _ = self.message_store.find_next_valid_id(current_idx)
+        if next_id is None:
+            next_id, _ = self.message_store.find_prev_valid_id(current_idx)
+        next_id_to_select = next_id
+
+        message, success = await himalaya_client.archive_messages([str(current_id)])
+
+        if success:
+            self.show_status(message or "Archived")
+        else:
+            self.show_status(
+                f"Failed to archive message {current_id}: {message}", "error"
+            )
+            return
 
         # Refresh the envelope list
         worker = self.fetch_envelopes()
diff --git a/src/maildir_gtd/config.py b/src/maildir_gtd/config.py
index 3d949b7..c7ded44 100644
--- a/src/maildir_gtd/config.py
+++ b/src/maildir_gtd/config.py
@@ -66,8 +66,9 @@ class KeybindingsConfig(BaseModel):
     create_task: str = "t"
     reload: str = "%"
     toggle_sort: str = "s"
-    toggle_selection: str = "x"
+    toggle_selection: str = "space"
     clear_selection: str = "escape"
+    scroll_page_down: str = "pagedown"
     scroll_page_down: str = "space"
     scroll_page_up: str = "b"
     toggle_main_content: str = "w"
diff --git a/src/maildir_gtd/screens/ConfirmDialog.py b/src/maildir_gtd/screens/ConfirmDialog.py
new file mode 100644
index 0000000..5c24988
--- /dev/null
+++ b/src/maildir_gtd/screens/ConfirmDialog.py
@@ -0,0 +1,108 @@
+"""Confirmation dialog screen for destructive actions."""
+
+from textual import on
+from textual.app import ComposeResult
+from textual.binding import Binding
+from textual.containers import Horizontal, Vertical, Container
+from textual.screen import ModalScreen
+from textual.widgets import Button, Label, Static
+
+
+class ConfirmDialog(ModalScreen[bool]):
+    """A modal confirmation dialog that returns True if confirmed, False otherwise."""
+
+    BINDINGS = [
+        Binding("escape", "cancel", "Cancel"),
+        Binding("enter", "confirm", "Confirm"),
+        Binding("y", "confirm", "Yes"),
+        Binding("n", "cancel", "No"),
+    ]
+
+    DEFAULT_CSS = """
+    ConfirmDialog {
+        align: center middle;
+    }
+
+    ConfirmDialog #confirm-container {
+        width: 50;
+        height: auto;
+        min-height: 7;
+        background: $surface;
+        border: thick $primary;
+        padding: 1 2;
+    }
+
+    ConfirmDialog #confirm-title {
+        text-style: bold;
+        width: 1fr;
+        height: 1;
+        text-align: center;
+        margin-bottom: 1;
+    }
+
+    ConfirmDialog #confirm-message {
+        width: 1fr;
+        height: 1;
+        text-align: center;
+        margin-bottom: 1;
+    }
+
+    ConfirmDialog #confirm-buttons {
+        width: 1fr;
+        height: 3;
+        align: center middle;
+        margin-top: 1;
+    }
+
+    ConfirmDialog Button {
+        margin: 0 1;
+    }
+    """
+
+    def __init__(
+        self,
+        title: str = "Confirm",
+        message: str = "Are you sure?",
+        confirm_label: str = "Yes",
+        cancel_label: str = "No",
+        **kwargs,
+    ):
+        """Initialize the confirmation dialog.
+
+        Args:
+            title: The dialog title
+            message: The confirmation message
+            confirm_label: Label for the confirm button
+            cancel_label: Label for the cancel button
+        """
+        super().__init__(**kwargs)
+        self._title = title
+        self._message = message
+        self._confirm_label = confirm_label
+        self._cancel_label = cancel_label
+
+    def compose(self) -> ComposeResult:
+        with Container(id="confirm-container"):
+            yield Label(self._title, id="confirm-title")
+            yield Label(self._message, id="confirm-message")
+            with Horizontal(id="confirm-buttons"):
+                yield Button(self._cancel_label, id="cancel", variant="default")
+                yield Button(self._confirm_label, id="confirm", variant="error")
+
+    def on_mount(self) -> None:
+        """Focus the cancel button by default (safer option)."""
+        self.query_one("#cancel", Button).focus()
+
+    @on(Button.Pressed, "#confirm")
+    def handle_confirm(self) -> None:
+        self.dismiss(True)
+
+    @on(Button.Pressed, "#cancel")
+    def handle_cancel(self) -> None:
+        self.dismiss(False)
+
+    def action_confirm(self) -> None:
+        self.dismiss(True)
+
+    def action_cancel(self) -> None:
+        self.dismiss(False)
diff --git a/src/maildir_gtd/screens/__init__.py b/src/maildir_gtd/screens/__init__.py
index 9a4d624..3b9ddba 100644
--- a/src/maildir_gtd/screens/__init__.py
+++ b/src/maildir_gtd/screens/__init__.py
@@ -3,6 +3,7 @@ from .CreateTask import CreateTaskScreen
 from .OpenMessage import OpenMessageScreen
 from .DocumentViewer import DocumentViewerScreen
 from .LinkPanel import LinkPanel, LinkItem, extract_links_from_content
+from .ConfirmDialog import ConfirmDialog
 
 __all__ = [
     "CreateTaskScreen",
@@ -11,4 +12,5 @@ __all__ = [
     "LinkPanel",
     "LinkItem",
     "extract_links_from_content",
+    "ConfirmDialog",
 ]
diff --git a/src/maildir_gtd/widgets/EnvelopeListItem.py b/src/maildir_gtd/widgets/EnvelopeListItem.py
index 45118f4..eab1a02 100644
--- a/src/maildir_gtd/widgets/EnvelopeListItem.py
+++ b/src/maildir_gtd/widgets/EnvelopeListItem.py
@@ -54,18 +54,19 @@ class EnvelopeListItem(Static):
 
     EnvelopeListItem .sender-name {
         width: 1fr;
+        color: $text-muted;
     }
 
     EnvelopeListItem .message-datetime {
         width: auto;
         padding: 0 1;
-        color: $text-muted;
+        color: $text-disabled;
     }
 
     EnvelopeListItem .email-subject {
         width: 1fr;
         padding: 0 3;
-        text-style: bold;
+        color: $text-muted;
     }
 
     EnvelopeListItem .email-preview {
@@ -76,10 +77,16 @@ class EnvelopeListItem(Static):
 
     EnvelopeListItem.unread .sender-name {
         text-style: bold;
+        color: $text;
+    }
+
+    EnvelopeListItem.unread .message-datetime {
+        color: $text-muted;
     }
 
     EnvelopeListItem.unread .email-subject {
         text-style: bold;
+        color: $text;
     }
     """