Open-source alternatives to Mailchimp
4 alternatives, ranked by a published maintenance score computed from live GitHub signals (fetched 2026-09-04). We flag unmaintained projects on both sides — including Mailchimp itself when the data says so.
About Mailchimp: Proprietary SaaS; contact-based pricing after the Intuit acquisition is the common complaint. It is closed-source, so the same public maintenance signals do not exist for it — we score only the alternatives below.
The alternatives
listmonk
Fast self-hosted newsletter and mailing-list manager in a single binary.
How this 90/100 was computed
| Last commit | yesterday | 40/40 |
|---|---|---|
| Latest release | 17 days ago | 25/25 |
| Community size | GitHub stars | 15/15 |
| Open-issue trend | not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile | 10/20 |
| Total | 90/100 |
Mautic
Full marketing automation: campaigns, segments, drip flows.
How this 87/100 was computed
| Last commit | today | 40/40 |
|---|---|---|
| Latest release | yesterday | 25/25 |
| Community size | GitHub stars | 12/15 |
| Open-issue trend | not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile | 10/20 |
| Total | 87/100 |
Keila
Newsletter tool with clean editing and forms, self-hostable.
How this 84/100 was computed
| Last commit | 2 days ago | 40/40 |
|---|---|---|
| Latest release | 2 months ago | 25/25 |
| Community size | GitHub stars | 9/15 |
| Open-issue trend | not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile | 10/20 |
| Total | 84/100 |
Mailtrain
Once-popular newsletter app; long dormant, no release since 2021.
How this 34/100 was computed
| Last commit | 11 months ago | 12/40 |
|---|---|---|
| Latest release | 5.2 years ago | 0/25 |
| Community size | GitHub stars | 12/15 |
| Open-issue trend | not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile | 10/20 |
| Total | 34/100 |