Jothar, my Rebbi said the same thing. In my first job, it was at a small company that employed Yeshivish looking people, I was in good company when addressing women as Mrs. _____. Ditto at the second company. Right now I work in a large office where the first few weeks I had to educate the women to avoid contact, that it’s not personal etc…. being that I am the only Yarmulka bearer in the office.
(How many of you thought with a name like Mayan I am female?)