os-alt

self-host the SaaS you're paying for

← all SaaS comparisons

ConvertKit (Kit) vs Mailchimp

Self-host either: open-source alternatives compared. · Category: email & newsletters

Both ConvertKit (Kit) and Mailchimp are in the email & newsletters category. 3 open-source projects (Listmonk, Mautic, Keila) self-host as a replacement for both — listed below alongside the picks unique to each.

ConvertKit (Kit)Mailchimp
CategoryCreator email marketingEmail marketing / newsletters
SaaS pricing anchorFree up to 10k subscribers; Creator $29/mo; Creator Pro $59/mo (rises with list size)$13-20/mo at small list sizes; scales steeply by contact count
Self-host options listed33

Replaces both — 3 shared open-source picks

These open-source projects appear on both /convertkit/ and /mailchimp/ — picking one solves the migration off either SaaS.

Listmonkknadh/listmonkalivereplaces both

GitHub
★ 20.1k · last commit today
License
AGPL-3.0
Setup time
15min docker-compose (Go binary + Postgres)
Monthly cost
$5 VPS for the app; SMTP relay (Amazon SES, Postmark, Resend) is the variable cost — SES at ~$0.10/1000 sends.

Mauticmautic/mauticalivereplaces both

GitHub
★ 9.65k · last commit 1d ago
License
GPL-3.0
Setup time
30min docker-compose (PHP + MariaDB + Cron)
Monthly cost
$10/mo VPS; SMTP relay separately.

Keilapentacent/keilaalivereplaces both

GitHub
★ 2.09k · last commit today
License
AGPL-3.0
Setup time
20min docker-compose (Elixir + Postgres)
Monthly cost
$5 VPS — Elixir is light.

In a terminal? npx os-alt convertkit or npx os-alt mailchimp prints either side — how the CLI works →

FAQ

Which open-source self-host alternatives replace both ConvertKit (Kit) and Mailchimp?

3 open-source projects appear on both /convertkit/ and /mailchimp/: Listmonk, Mautic, Keila.

How many self-host alternatives are listed for ConvertKit (Kit) and Mailchimp?

3 for ConvertKit (Kit), 3 for Mailchimp.

Are all the self-host alternatives free?

Yes — every listed option is open source. Your cost is the VPS or hardware that runs it.