Lets assume that I have a big email list but in general niches (like self esteem, motivation, learn electronics, living on mars) etc... How could I use them? Its hard to promote different products for everyone, So what about promote evergreen products for them? Do you thing guys that I may get a conversion rate (even low) ? 1000 man interesting in (living on mars) topic, How many sales may I get from promoting (get healthy lifestyle) products? like fitness and healthy nutrition for them?