Automatically mark msg as read in Mail module

UI/MailerUI/UIxMailView.m

@@ -278,9 +278,6 @@ static NSString *mailETag = nil;
                             andJSONRepresentation: data];
     }
 
-  // Mark message as read
-  [co addFlags: @"seen"];
-
   data = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                        [self attachmentAttrs], @"attachmentAttrs",
                        [self shouldAskReceipt], @"shouldAskReceipt",
@@ -302,6 +299,9 @@ static NSString *mailETag = nil;
   if ((addresses = [addressFormatter dictionariesForArray: [co replyToEnvelopeAddresses]]))
     [data setObject: addresses forKey: @"reply-to"];
 
+  // Mark message as read
+  [co addFlags: @"seen"];
+
   response = [self responseWithStatus: 200
                 andJSONRepresentation: data];