Here's his response, received after a prompt. Disappointing but not unexpected. Will have to reevaluate how to deal with this as he has clearly changed his tune since I spoke to him and my mother about this in the first instance, again not unexpected.
S#, (yes,he's still addressing me by my male name)
I have thought long and hard about your message.
Other than to state that email was not an appropriate method of communication in this instance (but so be it) I am lost for words.
You have made your decision - something I am unable to get my simple mind around. This covers matters such as "what you aim to achieve" and "how will then achieve same", by generally changing your physical appearance from male to female - something which can, I believe, can never be fully achieved.
Because of this I see little value in an eyeball to eyeball discussion on the subject.
To me, and I am so sorry, you will remain my son S# until the day I die - irrespective of your appearance.
Got to go, because I am having trouble reading the screen!
Dad
That last line sounds pretty close to an admission of tears, which would be a remarkable admission. Anyway, I'll just let that settle for now. Clearly requires a rethink, or you know, something. Sounds like Cindy's plan is a goer.