At least not in emails.
The other day I have tried to add “Contact Us” button on one of our FaceBook pages just to realise I can not assign our official info mail address:
The first reaction was: I am doing something wrong since modern TLD’s are in widespread use for at least two years now (or is it more?). After several dumb retries, I decided to find that elusive support form and ask nicely.
Answer come back the next day. And lo and behold … FaceBook does not support (so-called) modern LTD’s in emails yet. That’s lame.