diff --git a/layouts/kontakt/list.html b/layouts/kontakt/list.html
index 2542999..2a197f2 100644
--- a/layouts/kontakt/list.html
+++ b/layouts/kontakt/list.html
@@ -52,6 +52,9 @@
   action="https://forms.cantorgymnasium.de/form/schuelerzeitung-kontakt"
   method="post"
 >
+  <div hidden>
+    <input id="bad_email" type="text" name="bad_email" required />
+  </div>
   <p>
     <label>Name</label>
     <input id="name" type="text" name="name" required />