diff --git a/include/emailinbox.php b/include/emailinbox.php
index 25c78a9..3878848 100644
--- a/include/emailinbox.php
+++ b/include/emailinbox.php
@@ -72,7 +72,8 @@ class Emailinbox extends Renderer {
         $folders = $this->mbox->getMailboxes("*");
         $folderItems = [];
         foreach ($folders as $folder) {
-            $folderItems[] = '<li><a href="/emailinbox?folder=' . urlencode($folder['shortpath']) . '">' . utf8_encode($folder['shortpath']) . '</a></li>';
+            $item = '<li><a href="/emailinbox?folder=' . urlencode($folder['shortpath']) . '"' . ($folder === $this->folder ? ' style="active-folder"' : '') . '>' . utf8_encode($folder['shortpath']) . '</a></li>';
+            $folderItems[] = $item;
         }
         $this->content['folders'] = implode('', $folderItems);
     }
diff --git a/style/main.css b/style/main.css
index 145720d..940cfa2 100644
--- a/style/main.css
+++ b/style/main.css
@@ -213,3 +213,6 @@ footer > a{
 .emailfolders li {
     list-style: none;
 }
+.active-folder {
+    font-weight: bold;
+}