About
About FlockStack
Updated
What FlockStack is
FlockStack is a newsletter platform. You write an issue, send it to your list and publish it on a website of its own, from the dashboard or from an AI agent. Everything the dashboard does is also in a REST API with 234 endpoints and in an MCP server that ChatGPT, Claude, Cursor and Codex can use, with the same checks and limits. A newsletter has a Free plan, signup forms, paid subscriptions, automations, polls and a custom domain. The home page has the short version, and the documentation has the rest.
Open source
FlockStack is open source under the AGPL-3.0. The code is at github.com/ankurmans/flockstack, and the same code runs FlockStack Cloud, the hosted version. You can run it on your own server and keep publishing if you ever leave the hosted service. A self-hosted FlockStack has no plans and no limits from FlockStack; you pay for your own server and email sending. Self-hosted newsletter software covers what that takes, and how to send a newsletter with Amazon SES covers sending.
Who runs FlockStack Cloud
FlockStack Cloud is run by KMF Ventures LLC, a Wyoming limited liability company, per the terms of service and the privacy policy. The contact for questions, requests and complaints is hello@flockstack.io. These pages are written under the name FlockStack, not under a person's: who writes these pages explains how.
How FlockStack makes money
From the plans on FlockStack Cloud. The paid plans are priced by the emails you send in a month, with a cap on active subscribers, and yearly billing costs 10 months' price instead of 12. FlockStack sets no application fee on what your readers pay you, so it takes 0% of sales, and Stripe's processing fees still apply. A dedicated IP is sold at cost. How FlockStack is priced sets out each of these.
Where your data is kept
An account lives in one of two regions, the United States or the European Union, and nothing looks across them. The EU region has its own database and buckets. FlockStack says "data stored in the EU" and does not go further than that, because it has not yet verified the region of every subprocessor it uses. The sub-processors page lists them, and the regions documentation says what each region holds.
Where FlockStack is the weaker pick
FlockStack has no mobile app, no SMS, and no enterprise security reports or single sign-on, and its recommendations directory is small. Who FlockStack is for says plainly where it fits, and the comparison pages set it beside other platforms, with every fact sourced and dated.
How to reach us
Email hello@flockstack.io. FlockStack is not affiliated with any of the platforms it is compared with.
Sources
- FlockStack's terms of service and privacy policy: FlockStack Cloud is run by KMF Ventures LLC, a Wyoming limited liability company, with hello@flockstack.io as the contact: flockstack.io, checked
- FlockStack's README: what the app does, the AGPL-3.0 license, self-hosting and the two regions: github.com, checked
- FlockStack's documentation: the REST API, the MCP server and the regions: flockstack.io, checked
Questions
- What is FlockStack?
- FlockStack is a newsletter platform. You write an issue, send it to your subscribers and publish it on a website of its own, from the dashboard or through a REST API and an MCP server that AI agents can use. It has a Free plan, and paid plans priced by the emails you send.
- Is FlockStack open source?
- Yes. FlockStack is open source under the AGPL-3.0, and its code is at github.com/ankurmans/flockstack. You can run it on your own server, or use FlockStack Cloud, which runs the same code.
- Who runs FlockStack Cloud?
- FlockStack Cloud is run by KMF Ventures LLC, a Wyoming limited liability company, according to the terms of service and the privacy policy. Questions go to hello@flockstack.io.
- Where is my data kept?
- In the region you choose when you sign up, the United States or the European Union. An account lives in exactly one region. FlockStack says "data stored in the EU", not more than that, because it hasn't yet verified every subprocessor's region.
- How does FlockStack make money?
- From the plans on FlockStack Cloud, priced by the emails you send. It sets no application fee on what readers pay you, so it takes 0% of sales, and it sells a dedicated IP at cost.
- Does FlockStack have a mobile app or enterprise security reports?
- No. FlockStack has no mobile app, and it does not have the enterprise security reports and single sign-on that some buyers' checklists ask for. The page on who FlockStack is for says where it fits and where it does not.
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