I use joomla as a portal for associations. I use Jmail to provide users with the latest added articles. When I create a new user in the user table, it does not receive any mail. When I look at Manager User Subscription and I click on Preview I get an error message. Then I always have to sync all users to fix this error. I expect that if I add a usage I don't have to re-sync all users every time. Can this be solved?