SIZE XS SIZE SM SIZE MD SIZE LG

Substack

The platform for subscription publishing.

News and Press

Andreessen Horowitz Leads $15.3 Million Funding Round in Newsletter Publishing Platform Substack

Fortune • July 16, 2019

Newsletter publishing platform Substack raised $15.3 million in Series A funding. Andreessen Horowitz led the round, and was joined by investors including Y Combinator.

Blog Posts

The Substack AI Report

July 24, 2025

Live video on Substack: smarter, simpler, more discoverable

July 2, 2025

Introducing Substack Study Hall: Advice from top creators on getting started, going paid, and more

June 6, 2025

How to bring your social media audience to Substack

May 29, 2025
Show all Blog Posts (704 more)