Spam, or for real from eM Client?

Have just received an email supposedly from eM Client. It states that it is felt that my free subscription version is being used for business purposes. Which it is not, guaranteed! It asks that I contact eM Client but offers no contact info.

Is this spam? The sender is a George Wilson. I don’t really wish to hit “reply” for fear the link is really sending me to trojan/virus/hostage territory.

Suggestions?

This is a genuine email. Reply to George as he requested and any misunderstanding can be addressed.