Substack co-founder Hamish McKenzie says that creators jumping ship from 'mainstream media' like Jim Acosta, Joy Reid and Mehdi Hasan are a big driver of the growth. By Alex Weprin Senior Editor ...

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 ...

As TikTok's future in the U.S. remains in limbo, startup Substack is going after video creators in a move to expand its platform. The San Francisco startup on Thursday announced that creators can now ...

Hamish McKenzie materialized from a balcony looking over the lobby of the Line hotel in Washington, D.C., on Saturday night. The Substack co-founder and “chief writing officer” had flown in from San ...