diff --git a/desktop/main.js b/desktop/main.js
--- a/desktop/main.js
+++ b/desktop/main.js
@@ -70,6 +70,14 @@
     }
   });
 
+  ipcMain.on('set-badge', (event, value) => {
+    if (value) {
+      app.dock.setBadge(value.toString());
+    } else {
+      app.dock.setBadge('');
+    }
+  });
+
   win.webContents.setWindowOpenHandler(({ url }) => {
     shell.openExternal(url);
     return { action: 'deny' };
diff --git a/desktop/preload.js b/desktop/preload.js
--- a/desktop/preload.js
+++ b/desktop/preload.js
@@ -2,6 +2,7 @@
 
 const bridge = {
   onNavigate: callback => ipcRenderer.on('on-navigate', callback),
+  setBadge: value => ipcRenderer.send('set-badge', value),
   onTopBarDoubleClick: () => ipcRenderer.send('on-top-bar-double-click'),
 };
 
diff --git a/web/app.react.js b/web/app.react.js
--- a/web/app.react.js
+++ b/web/app.react.js
@@ -263,6 +263,7 @@
     const boundUnreadCount = useSelector(unreadCount);
     React.useEffect(() => {
       document.title = getTitle(boundUnreadCount);
+      electron?.setBadge?.(boundUnreadCount === 0 ? null : boundUnreadCount);
     }, [boundUnreadCount]);
 
     const dispatch = useDispatch();
diff --git a/web/electron.js b/web/electron.js
--- a/web/electron.js
+++ b/web/electron.js
@@ -6,6 +6,7 @@
   onNavigate: (
     (event: any, { canGoBack: boolean, canGoForward: boolean }) => void,
   ) => void,
+  setBadge: (value: string | number | null) => void,
   onTopBarDoubleClick: () => {},
 } = typeof electronContextBridge === 'undefined' ? null : electronContextBridge;