I would second what AustinMom recommended, were I qualified to do so and not some humble lowly newcomer myself.
I would also suggest you avail yourself of another email address, possibly Google's gmail. Yahoo email I understand poses many problems with incoming messages from MSCs, which often arrive with a previously-unknown scheduler's email address and are thus disregarded as spam.
D'Agosto
"What does it mean? You ask. I answer not/For meaning, but myself must echo, What?/And tell it as I saw it, on the spot."