Constant messages from "nowtopresults.com"

Sorry - this was not solved. There are a lot of instructions on line on how to do this, none of which have detail that actually works though they talk a good game. If you have any thoughts I would appreciate it thanks.

I get probably over a hundred of these a day and have to close every one

Hmmm, I use Mac Mail, not Gmail, but I do run Google Chrome...?