--- a/docs/changelog.rst	Wed Jun 13 23:27:33 2012 +0200
+++ b/docs/changelog.rst	Wed Jun 13 23:44:32 2012 +0200
@@ -50,6 +50,7 @@
 - fixed issue #459. Changed the way of obtaining logger in reindex task.
 - fixed #453 added ID field in whoosh SCHEMA that solves the issue of
   reindexing modified files
+- fixes #481 rhodecode emails are sent without Date header 
 
 1.3.6 (**2012-05-17**)
 ----------------------

--- a/rhodecode/lib/rcmail/message.py	Wed Jun 13 23:27:33 2012 +0200
+++ b/rhodecode/lib/rcmail/message.py	Wed Jun 13 23:44:32 2012 +0200
@@ -3,6 +3,7 @@
 from rhodecode.lib.rcmail.exceptions import BadHeaders
 from rhodecode.lib.rcmail.exceptions import InvalidMessage
 
+
 class Attachment(object):
     """
     Encapsulates file attachment information.
@@ -134,13 +135,13 @@
         """
 
         if not self.recipients:
-            raise InvalidMessage, "No recipients have been added"
+            raise InvalidMessage("No recipients have been added")
 
         if not self.body and not self.html:
-            raise InvalidMessage, "No body has been set"
+            raise InvalidMessage("No body has been set")
 
         if not self.sender:
-            raise InvalidMessage, "No sender address has been set"
+            raise InvalidMessage("No sender address has been set")
 
         if self.is_bad_headers():
             raise BadHeaders

--- a/rhodecode/lib/rcmail/response.py	Wed Jun 13 23:27:33 2012 +0200
+++ b/rhodecode/lib/rcmail/response.py	Wed Jun 13 23:44:32 2012 +0200
@@ -364,6 +364,7 @@
 
     return out
 
+
 class MIMEPart(MIMEBase):
     """
     A reimplementation of nearly everything in email.mime to be more useful
@@ -387,7 +388,8 @@
         self.set_payload(encoded, charset=charset)
 
     def extract_payload(self, mail):
-        if mail.body == None: return  # only None, '' is still ok
+        if mail.body == None:
+            return  # only None, '' is still ok
 
         ctype, ctype_params = mail.content_encoding['Content-Type']
         cdisp, cdisp_params = mail.content_encoding['Content-Disposition']
@@ -415,7 +417,8 @@
 
 
 def header_to_mime_encoding(value, not_email=False, separator=", "):
-    if not value: return ""
+    if not value:
+        return ""
 
     encoder = Charset(DEFAULT_ENCODING)
     if type(value) == list:
@@ -424,6 +427,7 @@
     else:
         return properly_encode_header(value, encoder, not_email)
 
+
 def properly_encode_header(value, encoder, not_email):
     """
     The only thing special (weird) about this function is that it tries

--- a/rhodecode/lib/rcmail/smtp_mailer.py	Wed Jun 13 23:27:33 2012 +0200
+++ b/rhodecode/lib/rcmail/smtp_mailer.py	Wed Jun 13 23:44:32 2012 +0200
@@ -21,10 +21,11 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
+import time
 import logging
 import smtplib
 from socket import sslerror
+from email.utils import formatdate
 from rhodecode.lib.rcmail.message import Message
 
 
@@ -59,8 +60,11 @@
 
         if isinstance(recipients, basestring):
             recipients = [recipients]
+        headers = {
+            'Date': formatdate(time.time())
+        }
         msg = Message(subject, recipients, body, html, self.mail_from,
-                      recipients_separator=", ")
+                      recipients_separator=", ", extra_headers=headers)
         raw_msg = msg.to_message()
 
         if self.ssl: