diff --git a/applets/systemtray/package/contents/config/main.xml b/applets/systemtray/package/contents/config/main.xml
--- a/applets/systemtray/package/contents/config/main.xml
+++ b/applets/systemtray/package/contents/config/main.xml
@@ -54,6 +54,10 @@
       <label>Whether the popup should remain open when another window is activated</label>
       <default>false</default>
     </entry>
+    <entry name="sidebar" type="Bool">
+      <label>If true, popups will be displayed in the sidebar mode.</label>
+      <default>false</default>
+    </entry>
   </group>
 
 </kcfg>
diff --git a/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml b/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
--- a/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
+++ b/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
@@ -19,6 +19,7 @@
 
 import QtQuick 2.1
 import QtQuick.Layouts 1.1
+import QtQuick.Window 2.13
 import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.plasma.components 2.0 as PlasmaComponents
 import org.kde.plasma.extras 2.0 as PlasmaExtras
@@ -30,24 +31,39 @@
     width: Layout.minimumWidth
     height: Layout.minimumHeight
     Layout.minimumWidth: units.gridUnit * 24
-    Layout.minimumHeight: units.gridUnit * 21
+    Layout.minimumHeight: plasmoid.configuration.sidebar ? Screen.desktopAvailableHeight : units.gridUnit * 21
     Layout.preferredWidth: Layout.minimumWidth
-    Layout.preferredHeight: Layout.minimumHeight * 1.5
+    Layout.preferredHeight: plasmoid.configuration.sidebar ? Screen.desktopAvailableHeight : Layout.minimumHeight * 1.5
 
     property alias activeApplet: container.activeApplet
     property alias hiddenLayout: hiddenItemsView.layout
+    property alias cfg_sidebar: sidebarButton.checked
 
-    PlasmaComponents.ToolButton {
-        id: pinButton
+    RowLayout {
+        anchors.top: parent.top
         anchors.right: parent.right
-        width: Math.round(units.gridUnit * 1.25)
-        height: width
-        checkable: true
-        checked: plasmoid.configuration.pin
-        onCheckedChanged: plasmoid.configuration.pin = checked
-        iconSource: "window-pin"
-        z: 2
-        tooltip: i18n("Keep Open")
+
+        PlasmaComponents.ToolButton {
+            id: sidebarButton
+            width: Math.round(units.gridUnit * 1.25)
+            height: width
+            checkable: true
+            checked: plasmoid.configuration.sidebar
+            onCheckedChanged: plasmoid.configuration.sidebar = checked
+            iconSource: "transform-move-vertical"
+            tooltip: i18n("Sidebar Mode")
+        }
+
+        PlasmaComponents.ToolButton {
+            id: pinButton
+            width: Math.round(units.gridUnit * 1.25)
+            height: width
+            checkable: true
+            checked: plasmoid.configuration.pin
+            onCheckedChanged: plasmoid.configuration.pin = checked
+            iconSource: "window-pin"
+            tooltip: i18n("Keep Open")
+        }
     }
 
     PlasmaExtras.Heading {