Open source alternatives to Campaign Monitor

5 open source projects replace Campaign Monitor, ranked by how safe each is to depend on.

87 · Healthy

Marketing automation platform with campaigns, segments, landing pages and lead scoring.

GPL-3.0-or-later★ 11kLast commit today

83 · Healthy

High-performance newsletter and mailing-list manager shipped as a single binary.

AGPL-3.0★ 24kLast commit 6 days ago

64 · Stable

Newsletter tool with a block editor, sign-up forms and campaign stats.

AGPL-3.0★ 2.2kLast commit 7 days ago

56 · Caution

Self-hosted mail server and newsletter platform for campaigns, templates and subscriber lists.

AGPL-3.0Relicensed 2025★ 16kLast commit 4 months ago

15 · At risk

Self-hosted newsletter app built on Node.js.

GPL-3.0★ 5.8kLast commit 3.8 years ago

87 · Healthy

83 · Healthy

64 · Stable

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

Project	Health	License	Stars	Last commit
Mautic	87 · Healthy	Free, share changesGPL-3.0-or-later	11k	today
listmonk	83 · Healthy	Free, share hosted changesAGPL-3.0	24k	6 days ago
Keila	64 · Stable	Free, share hosted changesAGPL-3.0	2.2k	7 days ago
BillionMail	56 · Caution	Free, share hosted changesAGPL-3.0Relicensed 2025	16k	4 months ago
Mailtrain	15 · At risk	Free, share changesGPL-3.0	5.8k	3.8 years ago

Campaign Monitor is a paid email marketing product. See all open source email marketing tools, ranked the same way.

Scores last refreshed from GitHub on 9 October 2026. How we score.