diff --git a/django/core/mail/message.py b/django/core/mail/message.py
index 9110fa993b..b25d23881b 100644
--- a/django/core/mail/message.py
+++ b/django/core/mail/message.py
@@ -231,7 +231,7 @@ class EmailMessage:
             self.reply_to = []
         self.from_email = from_email or settings.DEFAULT_FROM_EMAIL
         self.subject = subject
-        self.body = body
+        self.body = body or ''
         self.attachments = []
         if attachments:
             for attachment in attachments:
diff --git a/tests/mail/tests.py b/tests/mail/tests.py
index acce61cf9f..b8d0089ee3 100644
--- a/tests/mail/tests.py
+++ b/tests/mail/tests.py
@@ -357,6 +357,11 @@ class MailTests(HeadersCheckMixin, SimpleTestCase):
         msg.attach('example.txt', 'Text file content', 'text/plain')
         self.assertIn(html_content, msg.message().as_string())
 
+    def test_none_body(self):
+        msg = EmailMessage('subject', None, 'from@example.com', ['to@example.com'])
+        self.assertEqual(msg.body, '')
+        self.assertEqual(msg.message().get_payload(), '')
+
     def test_encoding(self):
         """
         Regression for #12791 - Encode body correctly with other encodings