My company has been receiving multiple similar emails from Impature as well.

We have a catch-all setup on our email so if you send something to anything@our-domain-name.com, we will receive it if that specific address doesn't actually exist. The emails have been sent to a whole bunch of made up first names that don't match up with anyone that has ever existed at our company and sent to made up email addresses to match. I responded to two of these, each time politely requesting that ALL addresses ending in our domain name be removed from their mailing list but continued to receive them.

Today I called Imparture's UK office and requested the same. I got the impression from them that it was a very common request.

We'll see if they honor their promise to do so this time round. Otherwise, I'll definitely be looking to report this activity on principle.