If you search that email address on Google, you get some interesting results. I suspect most HFs on here would not take this bait in any event, but this does not appear to be legit.

If you are't with an agency, you cannot be an au pair. If you do not have a green card, you cannot work legally.

Are you in the US legally, can you legally work, and can you prove both?

If you are a family, and you are in need of an au pair, in live caregiver or nanny from a foreign country to hire, contact me through facebook at emelda cu or email kimkate4me@gmail.com. Please I am not an agency. So no fee is required