1 files changed, 6 insertions, 0 deletions

diff --git a/src/mailman/email/message.py b/src/mailman/email/message.py
index f3a44e63c..1fca952c7 100644
--- a/src/mailman/email/message.py
+++ b/src/mailman/email/message.py
@@ -36,6 +36,7 @@ __all__ = [
 import email
 import email.message
 import email.utils
+import email.mime.multipart
 
 from email.header import Header
 
@@ -159,6 +160,11 @@ class Message(email.message.Message):
 
 
 
+class MultipartMessage(email.mime.multipart.MIMEMultipart, Message):
+    """Class for MIME digest messages"""
+
+
+
 class UserNotification(Message):
     """Class for internally crafted messages."""