The best thing about this software was that it helped us to generate more leads in less time than our competitors were doing so far (we also found some of their tools too old).
I think what we liked most here at mailoptins was its ease-of use because after getting used they can easily handle any kind of campaigns without much difficulty or error from side which has been always there while using other services by others. We have seen many times when people don't want things done as per plan but rather go off track themselves - hence sometimes these are not great results either! It's good if you're looking out for something where everything gets handled well under one roof and all efforts should be channelized towards generating better profits/leads then opt ins would do just fine for sure.