title: differences between mapi and ews?
body: <p>all, I'm new to Exchange programming and now I wonder what the exact differences between MAPI and EWS if I wanna create a mail client(using C++) to communicate with Exchange. Despite the versions they supported, which one is more efficient? And which is more easier to develop with?(I've heard that EWS is easier, but not sure about that) I've found everywhere and got nothing about the efficiency comparison. Please someone help me, or show me some place I can look into and find out that myself.</p>