Is there a feature that will filter bad email address and not even try to send them as well as keep an audit log of them?  I run a forum, and sometimes peoples emails change, go dead, etc.  Is there a feature in SmarterMail that will not send them after X number of times or at least flag them so I can make the judgement.  I don't want to keep trying to send a bunch of emails that don't exist and then perhaps I can contact the member through the forum to update their info.