Does anyone know of a site/resource with metrics about the newsletter "industry"? Like the top-100 newsletters by subscribers, that kind of thing? All I can find are granular posts about e.g. "the top 21 newsletters you need to subscribe to today!" but no overview.
Update - this was a helpful post with a list of some of the most-subscribed-to newsletters, but it's still pretty anecdotal: <a href="https://newslettercrew.com/the-most-popular-paid-subscriptionnewsletters/" rel="nofollow">https://newslettercrew.com/the-most-popular-paid-subscriptio...</a>