This applicaiton uses the built-in VPN support in Mac OS X, so it’ll only work with connections you can configure in the Network Settings panel. If you use a third-party VPN client — for example, to connect to an OpenVPN VPN — it won’t help you. Best desktop client for gmail mac. In short, it connects a client device (Mac, PC, iPhone, etc.) that is using an unsecured Wi-Fi or wired connection to a secured network before transmitting data. Best email client for mac os x. Apple has great support for VPN built right into Mac OS X and iOS.