diff --git a/dav_base/tests/test_emails.py b/dav_base/tests/test_emails.py
index c71c3ff..9a2b2d2 100644
--- a/dav_base/tests/test_emails.py
+++ b/dav_base/tests/test_emails.py
@@ -1,25 +1,38 @@
 from django.core import mail as django_mail
+from django.core.exceptions import ImproperlyConfigured
 from django.test import SimpleTestCase
 
 from ..emails import AbstractMail
 from .generic import EmailTestMixin
 
 
-class ConcreteMail(AbstractMail):
-    _subject = u'No subject'
-    _template_name = 'dav_base/base.html'
-
-    def __init__(self, recipient, *args, **kwargs):
-        self._recipient = recipient
-
-    def _get_recipients(self):
-        return [self._recipient]
-
-
 class TestCase(EmailTestMixin, SimpleTestCase):
+    def test_no_template_configured(self):
+        class ConcreteMail(AbstractMail):
+            pass
+
+        email = ConcreteMail()
+        with self.assertRaises(ImproperlyConfigured):
+            email.send()
+
+    def test_no_get_recipients_implemented(self):
+        class ConcreteMail(AbstractMail):
+            _template_name = 'dav_base/base.html'
+
+        email = ConcreteMail()
+        with self.assertRaises(NotImplementedError):
+            email.send()
+
     def test_send(self):
         recipient = 'root@localhost'
-        email = ConcreteMail(recipient)
+
+        class ConcreteMail(AbstractMail):
+            _template_name = 'dav_base/base.html'
+
+            def _get_recipients(self):
+                return [recipient]
+
+        email = ConcreteMail()
         email.send()
 
         self.assertEqual(len(django_mail.outbox), 1)
@@ -27,4 +40,4 @@ class TestCase(EmailTestMixin, SimpleTestCase):
 
         self.assertSender(mail)
         self.assertRecipients(mail, [recipient])
-        self.assertSubject(mail, u'No subject')
+        self.assertSubject(mail, u'')