Mark Cuban is available through his company email address, mark.cuban@dallasmavs.com. Billionaire entrepreneur Mark Cuban is … Mark Cuban is the owner of many different business ventures, the most notable of which is the Dallas Mavericks of the NBA. Please upgrade today! As this is a public email address, there is only a slight chance that he personally reads the emails that flood into this mailbox. This is a unique website which will require a more modern browser to work! But Cuban is adamant that "smarter capitalists" address income inequality by giving company equity to all employees. Mark Cuban is a serial entrepreneur, investor, and owner of the Dallas Mavericks. Osh's Affordable Pharmaceuticals | Mark Cuban Companies Osh's Affordable Pharmaceuticals These are pharmaceuticals which are customized to your individual needs by a board-certified pharmacist.