If the company is supposed to conduct a very important business deal or is giving you an offer, I wouldn't trust it. If no-one has heard of it and they are using a Gmail address, it doesn't seem very professional, especially if they have a domain.
They are described in this court case as "one of the largest and most nefarious cybersquatting operations the Internet has ever seen."
I think it's kinda cool to be called nefarious in an official document, and I'm a bit jealous. The suit says they are an affiliate company of Dotster, and Scott Fish (who I believe is an NPer) is also named.
A Google search for "[email protected]" turns up over 30,00 exact matches, so I would guess this is the address they use for domaining.
So, they look legit to me... I mean, for a nefarious cybersquatter kinda company.
Thanks for your replies. The reason I asked was because they dropped some very nice keyword mobi domains last summer. I was watching the drop lists during that time, but forgot about posting this question back then.