I do sometimes. How often people are being polite, I can't say.

What I can say is that I work as a woman in my own business. After years of dealing with the public on a daily basis, I have developed a confidence that helps immensely. I don't think about it anymore. At least when I am in familiar settings. I think that is a key. Being natural. Which is not something that you can "make" happen. By its very nature.

At work I had a woman who has been a customer for years recently listen in on a phone conversation when my out of state child called in an emergency. I had to shift voices and when the call was over I looked at her and she said "I never knew..." Perhaps a half dozen times I have had someone remark about my gender. Oth my business partner is a GG and she has been identified as a male about the same number of times. To be fair that was after a bad episode when a child kept pointing at me and said "that's a wig...that's a wig" and the father made some very mean homophobic remarks and stormed out. For a brief period people would wander in and try to figure out which of us was "the tranny". More often than not it was the short haired very tall GG in Jeans and a blouse rather than the long haired woman in a dress. It caused more than few moments of consternation.

If you think about it. Most of us know a GG who has male facial features, who may give you pause but never really gets "made" as a man. Many of us know women that have voices in a "mans" range, but who are rarely taken as men; face to face.

I think a large part of it is like acting. Be the part. If you are a woman in your head and ACT like a woman, walk like a woman, hold yourself like a woman and above all do it without thinking; then that goes a long way to passing. The same with your voice, it is not so much the range, it is how you speak, what you say, your word structure, the way you subconsciously move up and down in pitch the way a woman does. Men tend to be monotoned. Above all practice it so much that you dont' think about it. It just is.