Publishers and Substack: You've got mail
22 July 2026
As search-driven ambient discovery retreats, the inbox is becoming a top-of-funnel acquisition channel as well as a retention tool. Substack's value to publishers is infrastructure that gets content into inboxes, and email addresses into publisher databases.
The right strategy depends on the business model: paywalled publishers risk cannibalisation and use Substack as a funnel, while ad-funded publishers and broadcasters use it for parallel, personality-led brands.
Audiences attach to voices, be that an individual or a publication that talks like a real person. That attachment makes audiences portable, and that portability gets exercised when the economics justify it