We're not ready to name names at this point, but you're actually correct. If one looks closely at what China lets through the Great Firewall in terms of the major VPN providers, there is something that stands out.
Where do you plan to announce when you're ready to name names? I may have some need in the future to use a VPN in China and would like to be aware.
Also props on your mail service, it's very impressive. If it had been released a bit earlier, I think I'd have been a customer.