Newsletters get cozier with advertising

The big independent newsletter platforms are moving further into advertising, and their economics explain why. Substack is pushing social-style sponsorship deals, with brands like Poppi and Rothy's sourcing newsletter partnerships and consumer names like Hinge and Rare Beauty launching their own Substack publications; Substack's head of brand partnerships Dan Robbins framed it as "not just trying to recreate existing advertising models." Beehiiv, which takes a 0% cut of subscriptions versus Substack's 10%, launched its programmatic ad network extension in July and has been raising prices on tech and marketing services to make up the margin. The roundup also flags a quieter shift: with AI algorithms now behind the wheel of campaign execution, unstructured creative metadata is becoming a liability, and Coca-Cola's VP of transformation Josh Gurley warned that "you need to fill out every field and do all the fundamentals to get it right, or you're going to be missed."

The crux

Newsletter platforms are converging on advertising because subscription revenue alone is not enough, and the same metadata discipline AI buying demands of brands is about to become a requirement for publishers packaging inventory.

Sell-side read

Independent and niche publishers should read beehiiv's programmatic network and Substack's sponsorship push as competition for direct sponsorship budgets, and treat clean, structured inventory metadata as revenue protection, not a nice-to-have.

Watch

Whether Substack opens a programmatic offering to match beehiiv, and how the two platforms' revenue splits shift as advertising grows.