Me: "Hi, I emailed you earlier?"
Her: "Oh, yes. I was a little confused by your name, and want to make sure I had it right?
Me: "Oh, right. Z is my real name, but I prefer to use Y, and sign most of my stuff ZY so people aren't so confused when I start using Y."
Her: "I see. So, how long have you been transitioning?"
Her: "I just want to make sure I'm using the pronoun you're most comfortable with. Do you prefer he or she?"
(Apparently if you call people in the metal health industry with a deep voice and a gender neutral nickname, assumptions are made. Only in Seattle).