Open Source Alternatives

Alternatives to Mailchimp

Email marketing and automation platform.

1 drop-in replacement2 building blocks
mailchimp.com ↗

Mailchimp is a trademark of its respective owner.

Updated Mar 2026

Drop-in Replacements

Ranked by Discovery Score

1

Listmonk

1875% coverage

High-performance, self-hosted newsletter manager

If you want to send newsletters without paying per subscriber, Listmonk is the self-hosted answer. It's a single Go binary backed by Postgres that handles subscriber management, campaign creation, analytics, and sending — all through a clean web UI.

19.4k ★+69/wkGoGNU Affero General Public License v3.0

Building Blocks

Mailchimp is a platform — it bundles multiple capabilities into one subscription. These tools each cover one piece. Teams often assemble 2–3 of them instead of paying for the full suite.

Plunk

22covers: email campaigns50%

Open source email platform

Postal

11covers: transactional email35%

Fully featured open source mail delivery platform

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Including when one of these alternatives ships a major update. Free.