My friend used to have a webshop. He retired and closed the shop. I was able to buy his mailing list for a very small fee. I have searched the forum but didn?t find a good solution to monetize this. Is there someone who has experience in this and who can give me advice or maybe can work together with me. The list includes name, adres and e-mail from around 45k previous costumers. Most of them in one country and all in a certain niche. I hope anyone has any experience on this.