diff --git a/tests/test_e2e_v27.py b/tests/test_e2e_v27.py
index e2759a5..f30427d 100644
--- a/tests/test_e2e_v27.py
+++ b/tests/test_e2e_v27.py
@@ -539,6 +539,9 @@ class TestE8MailTab:
         self.mail_ids = []
 
     def _send_mail(self, client, **kwargs):
+        # Fix: 'from' is a Python keyword, callers use 'from_'
+        if 'from_' in kwargs:
+            kwargs['from'] = kwargs.pop('from_')
         resp = client.post("/api/mail", json=kwargs)
         assert resp.status_code == 200
         data = resp.json()