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A software company that allows users to start an email newsletter that makes money from subscriptions.

Substack is a company that has developed a platform for writers to publish their work and earn income from subscribers. It participated in the YC W18 cohort of Y Combinator and raised an estimated $2,120,000.Writers can start newsletters in a variety of categories, such as culture, politics, sports, health, business, and more. Substack has developed software that can be used by the writers, such as editing tools and payment solutions. In addition to newsletters, subscribers can also listen to podcasts and access discussion threads.


May 13, 2021
Substack announces that they've added a small community-building consultancy team to its ranks, acquiring the Brooklyn-based startup People & Company.
May 6, 2021
Substack raises $65M in a funding round led by Andreessen Horowitz.
April 15, 2021
Substack announces a $1M initiative that will fund independent writers creating local news publications.
March 30, 2021
Substack raises a $65,000,000 series B round.
July 15, 2020
Substack launches Defender, a program offering legal support to independent writers.
July 16, 2019
Substack raises a $15,300,000 series A round from Andreessen Horowitz, The a16z Cultural Leadership Fund and Y Combinator.

Funding rounds


Further Resources


Newsletter platform Substack raises $15.3M round led by a16z

Anthony Ha


July 16, 2019


Edmund Lee
September 1, 2021
The Booker Prize-winning author has reached a deal with the newsletter platform, where he plans to publish fiction and interact with readers.
Lucas Matney
August 24, 2021
Subscription newsletter platform kingpin Substack shared today that they've acqui-hired the team behind Cocoon, a subscription social media app built for close friends. We covered the Y Combinator-backed startup's initial $3 million seed raise led by Lerer Hippeau back in November 2019, shortly before the pandemic dramatically reconfigured how people used social media to communicate [...]
Amanda Silberling
August 3, 2021
Substack announced last week that it acquired Letter, a platform that encourages written dialogue and debate. The financials of the deal weren't disclosed, but this acquisition follows Substack's recent $65 million raise. Newsletters are all the rage -- Facebook launched its exclusive, celeb-studded Bulletin platform last month, and Twitter acquired the newsletter startup Revue earlier [...]
June 28, 2021
/PRNewswire/ -- Today Attuned, a Tokyo-based tech startup that uses psychology and AI to track intrinsic motivation and boost employee engagement, is...
Brian Contreras
June 14, 2021
Los Angeles Times
The newsletters business is booming, and Substack along with it. But one big thing still stands between writers and their readers: Google and its mysterious Gmail inbox filter.


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