replacing Mailchimp
Email marketing platform — Mailchimp pricing: Free / $13-$350/month. Below: 3 free, self-hostable open source projects that cover the same ground, ranked by real GitHub adoption.
There are 3 open source Mailchimp alternatives tracked on this registry, against Mailchimp pricing of Free / $13-$350/month. The most-adopted is Listmonk with 23,471 GitHub stars under AGPL-3.0, written in Go. Together the set has 36,207 stars across 3 languages and 1 licence. All 3 are free to self-host with no licence fee, and 3 of 3 received a commit in the last 90 days. 3 head-to-head Mailchimp comparisons are available.
Listmonk is a standalone, self-hosted newsletter and mailing list manager in the open-source business software and marketing customer engagement ecosystem. It packages campaign management, subscriber management, and email delivery controls into a single binary application with a modern dashboard, and it uses PostgreSQL as its data store.
AGPL-3.0 · Go · Mailchimp vs Listmonk →
Mautic is open source marketing automation software written in PHP. It lives in the PHP open-source marketing automation ecosystem and positions itself as an alternative to Mailchimp and SendGrid. It targets businesses and organizations that need campaign delivery, audience segmentation, email marketing, multi-channel messaging, and direct control over marketing data.
NOASSERTION · PHP · Mailchimp vs Mautic →
Keila is an open-source newsletter and email marketing tool written in Elixir and licensed under AGPL-3.0. It is presented as an open alternative to Mailchimp and Sendinblue, and it lives in the open-source email marketing and newsletter ecosystem for people who want to manage campaigns and subscriber sign-ups without relying only on a paid hosted service.
AGPL-3.0 · Elixir · Mailchimp vs Keila →
Self-hosted newsletter and mailing list manager
Open source marketing automation for everyone
Open-source email marketing for the privacy-conscious
last updated nightly · ranking method: github stars, live-tracked
Listmonk is the most-starred open source alternative to Mailchimp in this registry, with 23,471 GitHub stars. 3 alternatives are compared here in total.
Yes. Every project listed on this page is open source and free to self-host — there is no licence fee. Some projects also sell a managed hosted version, but the self-hosted path costs nothing.
Compare licence terms, community size (stars), primary language and release activity. A fast-moving project with a compatible licence and an active maintainer base matters more than raw star count when you are committing to a migration.