Is this even real?

I received an email today from a lawyer saying my grandfather has passed away, problem is I haven't seen or had any contact with him since I was 13, so that's 18 years without any contact. My question is how would this "lawyer" have my email? Is this even real? When my grandmother passed who I didn't know, I received a phone call and she was really deceased. 
Update: It was from a fraud trying to get me to claim an inheritance. I knew something was fishy because I'm not the only next of kin.