we can narrow it down to demographic specifics ie postcode/area.
That's
geographics! Interesting point, because
demographics is really what you need. No good trying to sell gucci handbags to dole blaggers, nor is it any good trying to sell slight seconds from primark to owners of a £1m property

If you send me 100 addresses by postcode from NN14 up to NN18 I'll send them back to you telling you exactly how pikey or not pikey each address is

But how do you know this from email addresses? Surely you must know the postal address too, to be able to filter the list geographically? There would be infinitely more value in selling the postal addresses.
Your website is a dead link. You haven't provided an email to contact so how can anyone reply?
Sounds like you're scamming
