Substack, originally a newsletter service, says its app now has millions of users interacting with its creators. By Benjamin Mullin and Jessica Testa Substack began its life as a buzzy newsletter ...

Substack has reached more than 5 million paid subscriptions for the first time, the company said this week. The updated audience total comes just four months after the digital journalism and content ...

Newsletter and publishing platform Substack announced $100 million in Series C funding, led by technology investment firm BOND and Peter Chernin’s The Chernin Group (TCG). Also participating in ...