Currently (May 2019) an email scam going around where companies are requesting you to register a very similar to a domain name to one already own. If you reply, they will offer you the opportunity to buy the domain often at an inflated prices to "preventing it being purchased by anyone else".
There is no other buyer they have just looked up your details via WHOIS this entity is trying to trick you into buying something you may not need.
You can safely ignore and delete this email.
Please feel free to forward your correspondence through to Conetix if you believe it's a scam and one of our support staff will help evaluate it for you.