mummyjojo2D ... nothing wrong with MLM if it is a good company ... everything wrong with pyramid schemes as they are illegal.
It sounds like one of those internet biz opps things ... could be a scam, may not be.
I get them all the time ... I just ignore them and hit delete immediately ... never click the unsubscribe button as that will tell them you are an active email and you won't hear the end of it.
I think I get them as I subscribe to an MLM e-magazine and so they probably manage to get my address from that. You may have subscribed to some webpage or online shopping site or something and that is how they found you.
I find them mildly irritating but not a major worry.
These unsolicited emails are not at all well regarded in decent MLM companies .... In fact I seem to remember that there is something in the DSA (Direct Selling Association) rules about unsolicited prospecting.
HTH