> Is that small fraction in the same friend group?Certainly if you just select people at random, it's unlikely they'd all want this service.
But if you already send a long email to friends periodically, and if they appreciate reading your long emails, and if they occasionally send you lengthy updates, then chances are the folks in your friend group would like the product.
To quote patio11 talking about financial services:
If there is a 100x100 matrix of broadly consumed financial products and potential customer segments for them, we can compete on product for one cell of that matrix, win by utter domination, and then start expanding from there.
https://twitter.com/patio11/status/1208909582896181248
This approach might not work well for financial services, but shouldn't it might be feasible for like-minded groups of people.