Top pick · highest health
Listmonk
High performance, self-hosted newsletter and mailing list manager with a modern dashboard.
★ 24k 237 commits / 90d ⟳ today AGPL-3.0 Docker
Category
Open source communication - email - mailing lists and newsletters
Mailing list servers and mass mailing software - one message to many recipients. Repoly tracks 12 open-source mailing lists tools, each scored nightly from its repository activity and ranked by that score alone. Listmonk leads at 98/100 with 237 commits in the last 90 days and 24k stars, followed by Keila (93) and Mautic (86). 4 of the 12 score 70 or above, 3 publish a Docker image, and the median health is 59. GPL-3.0 is the most common licence, carried by 5 of them. Between them they stand in for Mailchimp and HubSpot. The score weighs commits in the last 90 days, release recency, stars, archive status and Docker support; a low number means low measurable activity, not low quality, so a finished, stable tool can legitimately sit lower down.
updated Oct 2026 12 tools ★ 42k stars 3 with Docker median 59
Best for…
Ranked by health
Table view
-
-
Keila
Reliable and easy-to-use newsletter tool (alternative to Mailchimp and Sendinblue).
★ 2.3k 89 commits / 90d ⟳ yesterday AGPL-3.0 Docker
-
Mautic
Marketing automation software (email, social and more).
★ 11k 1382 commits / 90d ⟳ today GPL-3.0
-
-
-
phpList
Newsletter and email marketing with advanced management of subscribers, bounces, and plugins.
★ 878 12 commits / 90d ⟳ 11 days ago AGPL-3.0
-
Dittofeed
Omni-channel customer engagement and messaging automation platform (alternative to Braze, Customer.io, Iterable).
★ 3k 4 commits / 90d ⟳ 18 days ago MIT Docker
-
-
-
Schleuder
GPG-enabled mailing list manager with resending-capabilities.
★ 11 0 commits / 90d ⟳ 1.4 years ago GPL-3.0
-
Mailman
Manage electronic mail discussion and e-newsletter lists.
★ 0 0 commits / 90d ⟳ unknown GPL-3.0
-
Sendy
Self-hosted email newsletter application that lets you send bulk emails via Amazon Simple Email Service (SES) or other SMTP services.
★ 0 0 commits / 90d ⟳ unknown ⊘ Proprietary
| # | ||||||
|---|---|---|---|---|---|---|
| 1 | Listmonk Docker | 24k | 237 | AGPL-3.0 | today | |
| 2 | Keila Docker | 2.3k | 89 | AGPL-3.0 | yesterday | |
| 3 | Mautic | 11k | 1382 | GPL-3.0 | today | |
| 4 | mlmmj | 27 | 63 | MIT | 8 days ago | |
| 5 | Sympa | 316 | 18 | GPL-2.0 | 3 months ago | |
| 6 | phpList | 878 | 12 | AGPL-3.0 | 11 days ago | |
| 7 | Dittofeed Docker | 3k | 4 | MIT | 18 days ago | |
| 8 | HyperKitty | 230 | 37 | GPL-3.0 | 3 days ago | |
| 9 | Postorius | 94 | 71 | GPL-3.0 | 3 days ago | |
| 10 | Schleuder | 11 | 0 | GPL-3.0 | 1.4 years ago | |
| 11 | Mailman | 0 | 0 | GPL-3.0 | unknown | |
| 12 | Sendy | 0 | 0 | ⊘ Proprietary | unknown |
How the mailing list tools compare
Listmonk edges Keila 98 to 93, and most of the difference is stars: 24k stars against 2.3k stars.
The most recent release is Keila 0.40.0, published yesterday. Schleuder publishes no tagged releases, which costs up to 25 of the 100 points. Schleuder scores under 40, so check recent activity before adopting it. By stack, PHP (3), Python (3) and C (1) are the most common. mlmmj and Dittofeed are permissively licensed; Listmonk, Keila, Mautic and 6 more are copyleft. Sendy is source-available rather than open source, which limits commercial reuse. Mailman and Sendy are not hosted on a forge Repoly can read, so they have no measured score yet.
Communication - Email - Mailing Lists and Newsletters: common questions
What is the best open source mailing list tool?
By Repoly's GitHub health score, Listmonk at 98/100 (237 commits in 90 days, v7.0.0-beta.1 from 10 days ago). Keila is next at 93; Listmonk's lead comes mostly from stars. The score measures maintenance, not features, so shortlist the top few and try them.
Which mailing list tools are the most actively developed?
Mautic (1,382 commits in 90 days), Listmonk (237 commits in 90 days) and Keila (89 commits in 90 days). Commit activity is 35 of the 100 health points, the largest single term.
Which mailing list tools can I run in Docker?
3 of 12 publish a Docker image or Compose file, led by Listmonk, Keila and Dittofeed.
Which mailing list tools have a permissive licence?
2 of 12: mlmmj (MIT), Dittofeed (MIT). 9 are copyleft.
Which paid products can open source mailing list tools replace?
Mailchimp (Listmonk ranks highest here) and HubSpot (Mautic ranks highest here).
