I've had that installed for months. It does not work effectively/properly (its not supported) and has not been updated for 3.8. Ideally I wish vb had built in bounced management, but since so many other 3rd party scripts are starting to realise how important this is to have when sending out emails (since you are highly likely to get blacklisted unless you have some form of management for bounced emails) It is time for
GAZ
to step up and be at par to other free solutions around the net.