
Substack
Founded Year
2017Stage
Series C | AliveTotal Raised
$200.23MValuation
$0000Last Raised
$100M | 4 mos agoRevenue
$0000Mosaic Score The Mosaic Score is an algorithm that measures the overall financial health and market potential of private companies.
+66 points in the past 30 days
About Substack
Substack operates in the media and publishing industry. It provides a platform for writers and creators to publish their work and connect with subscribers. It was founded in 2017 and is based in San Francisco, California.
Loading...
ESPs containing Substack
The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.
The email newsletter platforms market provides software to create, send, and monetize email newsletters. Tools in this market include creator‑focused platforms with built‑in subscriptions and ad networks, general email marketing services (ESPs) that support newsletter campaigns, and website/CMS plugins that add newsletter sending and list management. Common features include drag‑and‑drop editors, …
Substack named as Highflier among 15 other companies, including Salesforce, HubSpot, and Twilio.
Loading...
Research containing Substack
Get data-driven expert analysis from the CB Insights Intelligence Unit.
CB Insights Intelligence Analysts have mentioned Substack in 3 CB Insights research briefs, most recently on Mar 31, 2023.
Expert Collections containing Substack
Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.
Substack is included in 2 Expert Collections, including Influencer & Content Creator Tech.
Influencer & Content Creator Tech
340 items
Companies that serve independent creators who want to monetize their own work, from content creation tools to administrative back-end platforms to financing solutions.
Unicorns- Billion Dollar Startups
1,297 items
Latest Substack News
Nov 9, 2025
Atualização do X para iOS pré-carrega links, gera visualizações falsas e distorce métricas, preocupando criadores e plataformas digitais (Imagem: Photo Agency/Shutterstock) Compartilhe esta matéria Uma atualização recente do X para iOS , criada para ajudar criadores de conteúdo a ampliar o alcance de suas postagens, pode estar causando um efeito inesperado: o aumento de visualizações “fantasmas” em outros sites. O novo sistema, que pré-carrega links automaticamente, está confundindo métricas e gerando preocupações entre editores e especialistas em marketing digital , afirma o The Verge . Atualização do X para iOS que deveria ajudar criadores de conteúdo, na verdade está gerando tráfego fantasma para outros sites. Imagem: NicoElNino/Shutterstock Experimento saiu pela culatra? O novo recurso do X para iOS foi desenvolvido para manter o usuário mais tempo dentro da plataforma. Mas, segundo sites como Substack e Bluesky, ele está inflando artificialmente o tráfego, criando visualizações falsas. O que está acontecendo aqui é um caso clássico de distorção de métricas causada por experimentação de produto na camada da plataforma. Nick Eubanks, vice-presidente da SemRush, ao The Verge. Com isso, o novo navegador interno do X: pré-carrega páginas antes de o usuário clicar nelas; gera impressões que parecem reais, mas não vêm de visitas humanas; aumenta falsamente as taxas de cliques; engana anunciantes e criadores, que acreditam estar recebendo mais tráfego. Antes, o navegador embutido do X bloqueava a postagem original quando abria um link. Agora, ele permite curtir, responder ou salvar o conteúdo enquanto o site de destino é carregado – e é aí que as métricas se perdem. Sistema, segundo especialistas, pode ter arruinado as métricas dos sites, já que acessos em segundo plano parecem tráfego genuíno. Imagem: Ralf Liebhold/Shutterstock) Quando o “aumento” não é real O CEO do Substack, Chris Best, chegou a comemorar um crescimento súbito nas visitas vindas do X, até perceber que a maior parte era falsa. Mesmo após corrigir as visualizações duplicadas, ele reconheceu um aumento real, mas bem menor. Paul Frazee, gerente de produtos do Bluesky, também reclamou. Segundo ele, o novo sistema “arruinou” as métricas do site, já que os acessos em segundo plano passam a parecer tráfego genuíno. “O X começou a abrir links em segundo plano para que carreguem mais rápido… mas isso fez com que vários outros sites recebessem tráfego extra que parece real”, afirmou Frazee. O que o X diz sobre o caso? O chefe de produto do X, Nikita Bier, justificou a mudança dizendo que muitos criadores reclamavam da queda no alcance de posts com links. “Isso acontece porque o navegador cobre a postagem e as pessoas se esquecem de curtir ou responder. Assim, o X não recebe um sinal claro se o conteúdo é bom ou não”, comenta. Leia mais: Quando o engajamento vira ilusão A ideia era manter a interação visível para o usuário, mesmo quando ele abre um link – uma estratégia que pode beneficiar o X, mas distorcer os números de outras plataformas. Imagem: 13_Phunkod/Shutterstock Embora o pré-carregamento pareça uma boa forma de aumentar o engajamento dentro do X, ele tem prejudicado criadores e editores fora da plataforma, dificultando o rastreamento da origem real do tráfego. “Estamos entrando em uma era em que a inflação de métricas por meio de truques de interface, pré-carregamento, reprodução automática e sumarização por IA vai confundir a linha entre engajamento do usuário e comportamento da máquina”, alertou Eubanks. Ele reforça que as plataformas precisarão ser mais transparentes sobre como contabilizam visualizações e separar prévias automáticas de visitas reais de pessoas.
Substack Frequently Asked Questions (FAQ)
When was Substack founded?
Substack was founded in 2017.
Where is Substack's headquarters?
Substack's headquarters is located at 111 Sutter Street, San Francisco.
What is Substack's latest funding round?
Substack's latest funding round is Series C.
How much did Substack raise?
Substack raised a total of $200.23M.
Who are the investors of Substack?
Investors of Substack include Andreessen Horowitz, The Chernin Group, Icehouse Ventures, Jens Grede, Rich Paul and 17 more.
Who are Substack's competitors?
Competitors of Substack include Every, X, beehiiv, Mirror, Automattic and 7 more.
Loading...
Compare Substack to Competitors

beehiiv offers a newsletter platform enabling creators to develop, monetize, and grow email publications within the digital media and marketing industry. The company provides tools for writing, designing, publishing, and analyzing newsletters, focused on improving user experience and increasing subscriber engagement. beehiiv serves various sectors including e-commerce, content creation, web 3 and cryptocurrency, health and fitness, food, pop culture, podcasting, sports, journalism, news, fashion, and beauty. It was founded in 2021 and is based in New York, New York.

Medium operates as an online publishing platform allowing individuals to read and write stories. It operates on a subscription model. Medium was formerly known as The Obvious. It was founded in 2012 and is based in San Francisco, California.

Ghost is an open-source platform for publishing and content management within the digital media industry. The company provides tools for creating and sharing content through websites, email newsletters, and paid subscriptions. Ghost serves creators, publishers, and businesses. It was founded in 2013 and is based in Singapore.

Mirror focuses on Web3 technology within the online publishing industry. It offers a web-native publishing platform that enables writers to publish, build communities, and monetize their work through writing non-fungible tokens (NFTs), which are collectible, minted versions of their posts. It was founded in 2020 and is based in Brooklyn, New York. In May 2024, Mirror was acquired by Paragraph.

ConvertKit provides email marketing software within the technology sector. Its platform includes features for email creation, automation, and audience management, serving individuals and businesses in content creation and digital marketing. It was founded in 2013 and is based in Boise, Idaho.

Buttondown is a company that provides newsletter production tools within the software industry. Their offerings include a platform for creating and managing newsletters, which includes automation, personalization, and analytics features. The company serves a range of users, from individual creators to enterprise-level businesses, with tools that integrate with various external platforms. Buttondown was formerly known as Village Blacksmith. It is based in Seattle, Washington.
Loading...

