Use activities to keep transactions.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16399 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmailDocument.py

@@ -411,7 +411,15 @@ class EmailDocument(File, TextDocument):
       if download:
         return message.as_string() # Only for debugging purpose
 
-      self.MailHost.send(message.as_string())
+      # Use activities
+      self.activate(activity="SQLQueue").sendMailHostMessage(message.as_string())
+
+  security.declareProtected(Permissions.UseMailhostServices, 'sendMailHostMessage')
+  def sendMailHostMessage(self, message):
+    """
+      Send one by one
+    """
+    self.MailHost.send(message)
 
 ## Compatibility layer
 #from Products.ERP5Type import Document