Free and open-source Mailchimp alternatives

Mailchimp (Email marketing and automation platform) is a commercial product. These 3 tools do the same job and are free to use or to self-host.

Short answer: the best free alternatives to Mailchimp are Listmonk, Mautic and Keila. Self-hosting is free; you pay only for the server (a small VPS is about $4–6/mo). Licenses and prices checked 2026-10-01.

1
Listmonk
Self-hosted newsletter and mailing list manager
Fast newsletter and mailing list manager; bring your own SMTP.
Open source (AGPL-3.0) ·★ 24k GitHub stars · last commit 2026-10-07 · details
2
Mautic
Open-source marketing automation
Full marketing automation; heavier to run.
Open source (GPL-3.0) ·★ 11k GitHub stars · last commit 2026-10-07 · details
3
Keila
Open-source email newsletter tool
Simple newsletter tool; smaller community.
Open source (AGPL-3.0) ·★ 2.2k GitHub stars · last commit 2026-10-02 · details

Want paid options too? See all Mailchimp alternatives or the full free alternatives list. Beyond developer tools, OSS Software lists more open-source Mailchimp alternatives.

FAQ

Is there a free alternative to Mailchimp?+

Yes. Listmonk, Mautic and Keila do the same job for free; Listmonk, Mautic and Keila are open source.

What is the best open-source alternative to Mailchimp?+

Listmonk is the most starred on GitHub (24k stars). Fast newsletter and mailing list manager; bring your own SMTP.

Open source: OSI-approved license. Free to self-host: the code is public and free to run yourself, with limits in the license.

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Free and open-source Mailchimp alternatives

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