Fixed #27469 -- Prevented sending email to empty addresses

Thanks Jarek Glowacki for the report.

1 files changed, 1 insertions, 1 deletions

diff --git a/django/core/mail/message.py b/django/core/mail/message.py
index 98f3cfd632..97703cac0f 100644
--- a/django/core/mail/message.py
+++ b/django/core/mail/message.py
@@ -328,7 +328,7 @@ class EmailMessage(object):
         Returns a list of all recipients of the email (includes direct
         addressees as well as Cc and Bcc entries).
         """
-        return self.to + self.cc + self.bcc
+        return [email for email in (self.to + self.cc + self.bcc) if email]
 
     def send(self, fail_silently=False):
         """Sends the email message."""