diff --git a/js/forum/src/components/NotificationList.js b/js/forum/src/components/NotificationList.js
index 3d24a1168..8ba947458 100644
--- a/js/forum/src/components/NotificationList.js
+++ b/js/forum/src/components/NotificationList.js
@@ -134,10 +134,11 @@ export default class NotificationList extends Component {
 
     app.session.user.pushAttributes({unreadNotificationsCount: 0});
 
-    app.cache.notifications.forEach(notification => {
-      if (!notification.isRead()) {
-        notification.save({isRead: true});
-      }
+    app.cache.notifications.forEach(notification => notification.pushAttributes({isRead: true}));
+
+    app.request({
+      url: app.forum.attribute('apiUrl') + '/notifications/read',
+      method: 'POST'
     });
   }
 }
diff --git a/src/Api/Actions/Notifications/ReadAllAction.php b/src/Api/Actions/Notifications/ReadAllAction.php
new file mode 100644
index 000000000..496c93924
--- /dev/null
+++ b/src/Api/Actions/Notifications/ReadAllAction.php
@@ -0,0 +1,45 @@
+<?php
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Api\Actions\Notifications;
+
+use Flarum\Core\Notifications\Commands\ReadAllNotifications;
+use Illuminate\Contracts\Bus\Dispatcher;
+use Flarum\Api\Request;
+use Flarum\Api\Actions\DeleteAction;
+
+class ReadAllAction extends DeleteAction
+{
+    /**
+     * @var Dispatcher
+     */
+    protected $bus;
+
+    /**
+     * @param Dispatcher $bus
+     */
+    public function __construct(Dispatcher $bus)
+    {
+        $this->bus = $bus;
+    }
+
+    /**
+     * Mark all notifications as read.
+     *
+     * @param Request $request
+     * @return void
+     */
+    protected function delete(Request $request)
+    {
+        $this->bus->dispatch(
+            new ReadAllNotifications($request->actor)
+        );
+    }
+}
diff --git a/src/Api/ApiServiceProvider.php b/src/Api/ApiServiceProvider.php
index d40ba9b9f..6c5dc3004 100644
--- a/src/Api/ApiServiceProvider.php
+++ b/src/Api/ApiServiceProvider.php
@@ -178,6 +178,13 @@ class ApiServiceProvider extends ServiceProvider
             $this->action('Flarum\Api\Actions\Notifications\IndexAction')
         );
 
+        // Mark all notifications as read
+        $routes->post(
+            '/notifications/read',
+            'flarum.api.notifications.readAll',
+            $this->action('Flarum\Api\Actions\Notifications\ReadAllAction')
+        );
+
         // Mark a single notification as read
         $routes->patch(
             '/notifications/{id}',
diff --git a/src/Core/Notifications/Commands/ReadAllNotifications.php b/src/Core/Notifications/Commands/ReadAllNotifications.php
new file mode 100644
index 000000000..85147e633
--- /dev/null
+++ b/src/Core/Notifications/Commands/ReadAllNotifications.php
@@ -0,0 +1,31 @@
+<?php
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Core\Notifications\Commands;
+
+use Flarum\Core\Users\User;
+
+class ReadAllNotifications
+{
+    /**
+     * The user performing the action.
+     *
+     * @var User
+     */
+    public $actor;
+
+    /**
+     * @param User $actor The user performing the action.
+     */
+    public function __construct(User $actor)
+    {
+        $this->actor = $actor;
+    }
+}
diff --git a/src/Core/Notifications/Commands/ReadAllNotificationsHandler.php b/src/Core/Notifications/Commands/ReadAllNotificationsHandler.php
new file mode 100644
index 000000000..61bb52c8c
--- /dev/null
+++ b/src/Core/Notifications/Commands/ReadAllNotificationsHandler.php
@@ -0,0 +1,46 @@
+<?php
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Core\Notifications\Commands;
+
+use Flarum\Core\Notifications\Notification;
+use Flarum\Core\Notifications\NotificationRepository;
+
+class ReadAllNotificationsHandler
+{
+    /**
+     * @var NotificationRepository
+     */
+    protected $notifications;
+
+    /**
+     * @param NotificationRepository $notifications
+     */
+    public function __construct(NotificationRepository $notifications)
+    {
+        $this->notifications = $notifications;
+    }
+
+    /**
+     * @param ReadAllNotifications $command
+     *
+     * @return void
+     */
+    public function handle(ReadAllNotifications $command)
+    {
+        $actor = $command->actor;
+
+        if ($actor->isGuest()) {
+            throw new PermissionDeniedException;
+        }
+
+        $this->notifications->markAllAsRead($actor);
+    }
+}
diff --git a/src/Core/Notifications/NotificationRepository.php b/src/Core/Notifications/NotificationRepository.php
index bad0f2e26..f71f1bf62 100644
--- a/src/Core/Notifications/NotificationRepository.php
+++ b/src/Core/Notifications/NotificationRepository.php
@@ -42,4 +42,16 @@ class NotificationRepository
             ->latest('time')
             ->get();
     }
+
+    /**
+     * Mark all of a user's notifications as read.
+     *
+     * @param User $user
+     *
+     * @return void
+     */
+    public function markAllAsRead(User $user)
+    {
+        Notification::where('user_id', $user->id)->update(['is_read' => true]);
+    }
 }