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.
Loading Tweets...
Blog Posts
A career journalist covering spies and national security was hit with a $1 million defamation lawsuit. He turned to Substack Defender for help—and won
August 7, 2026
Model Behavior: Taylor Lorenz
July 29, 2026
How writers are reacting to Substack’s AI transparency tools
July 24, 2026
Jonathan Wilson’s World Cup Diary
July 18, 2026
Show all Blog Posts
(743 more)