diff --git a/templates/emails.html b/templates/emails.html
index d9e2701..f681922 100644
--- a/templates/emails.html
+++ b/templates/emails.html
@@ -237,7 +237,7 @@ document.addEventListener('click', function(e) {
   if (!btn) return;
   const id = btn.dataset.id;
   if (!confirm('Eintrag #' + id + ' aus dem Log löschen?')) return;
-  fetch('/api/sent-emails/' + id + '/delete', {method: 'POST'})
+  fetch('/api/sent-emails/' + id + '/delete', {method: 'POST', credentials: 'same-origin'})
     .then(r => { if (!r.ok) throw new Error('HTTP ' + r.status); return r.json(); })
     .then(d => {
       if (d.success) {