www.dothop.com / They started to send spam to me
I used the website www.dothop.com, when I searched for the websites and tools, which would help to improve the design and quality of the website. I used the website very frequently and started to get emails from them. They offered different things and provided some tips, but it was completely unnecessary information for me. I tried to email them and told that I haven’t been interested in it, but they didn’t react. How to stop them?