Right now, SSLMate requires a first name, last name, country, and phone number:

I'm inspired to file this by this post lamenting the deprecation of HTTP, and pointing out the information you are required to give:

The service in the screenshot is StartSSL, and it's more invasive than what SSLMate requires.
Nonetheless, is it possible for SSLMate to require less information? And/or, in the case of field validation by your upstream CAs, is it possible for SSLMate to fill in dummy information without breaching your upstream CA's requirements?