Ghost
98 · HealthyPublishing platform for blogs and newsletters, with paid memberships, subscriptions and email delivery built in.
Open source Email marketing
Mautic
87 · HealthyMarketing automation platform with campaigns, segments, landing pages and lead scoring.
listmonk
83 · HealthyHigh-performance newsletter and mailing-list manager shipped as a single binary.
useSend
74 · StableEmail sending service with an API, SMTP, domain management and campaigns, running on Amazon SES.
Posta
71 · StableEmail delivery service that lets your apps send through an HTTP API, with templates, delivery tracking and analytics.
Plunk
70 · StableEmail platform for SaaS products that combines transactional email, campaigns and automations on top of Amazon SES.
Postal
65 · StableMail delivery platform for sending transactional email from your own servers.
Keila
64 · StableNewsletter tool with a block editor, sign-up forms and campaign stats.
Dittofeed
61 · StableCustomer engagement platform for automated email, SMS and push journeys.
BillionMail
56 · CautionSelf-hosted mail server and newsletter platform for campaigns, templates and subscriber lists.
Mailtrain
15 · At riskSelf-hosted newsletter app built on Node.js.
Source-available and unverified licenses
The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.
Notifuse
68 · StableNewsletter, email marketing and transactional email platform with a visual MJML editor and several sending providers.
Mailtrain
Self-hosted newsletter app built on Node.js.
Alternative to
Will it still be around?
At risk
Score 15/100
Can a business use it freely?
Free, share changes
GPL-3.0 · open source (copyleft)
Flat Rate Deploy
At 500 contacts, Mailchimp Standard costs about $20 a month. Mailtrain on OpenTools costs $15 a month, setup included, so you save $5 a month, about $180 over three years.
Monthly cost
- Mailtrain on OpenTools
- $15
- Mailchimp
$20
You save each month
$5/mo
25% less than today
Saving from month one
You save
- Over 3 years
- $180
- In year one
- $60
List price checked 8 Oct 2026 · Source · Disclaimer
Health score: 15/100
At risk · activity, bus factor and issue responsiveness, from GitHub
Score v2 · How it works
Activity
45% weight0/100
- Last commit 1399 days ago (0/100).
- 0 commits in the past 12 months (0/100).
- 0 releases in the past 12 months (0/100).
Bus factor
30% weight0/100
- No human commits in the past 12 months.
Responsiveness
25% weight60/100
- 99% of all issues are closed (12 open, 956 closed) (100/100).
- 2 of 6 recent issues got a reply or were closed (33/100).
License
Free, share changes
GPL-3.0 · Open source (copyleft)
What you need to do
Free for any use, commercial included. Running it in your company, changed or not, asks nothing of you; only if you hand modified copies to others must you publish your changes under the same license.
GNU General Public License v3.0 · Open source (copyleft). OSI-approved license that requires sharing changes under the same license when you distribute (AGPL: also when you offer it over a network).
Detected by GitHub as GPL-3.0.
GitHub activity
- Stars
- 5.8k
- Forks
- 708
- Commits, 12 mo
- 0
- last 3.8 years ago
- Releases, 12 mo
- 0
- last 5.3 years ago
- Contributors
- 84
- 0 in last 0 commits
- Open issues
- 12
- 956 closed
Snapshot from 2026-10-08
Top contributors
No pull requests merged on GitHub since 10 October 2025. Some projects, such as Odoo, merge changes outside GitHub's merge button, so their contributors don't show here yet.