I also received the email mentioned here but it's not the first time unfortunately.

Some people seem to think they can just send a message offering to promote one of your products when you can tell from the email they haven't even bothered to check it out properly, and really all they want to do is get you promoting their product or sign you up to some sort of scheme.

It works better for all concerned if it's a genuine Joint Venture proposal that's going to be followed through properly.