Best Email Marketing tools by public signals

These picks are computed from scored public evidence. Use the openness column in the ranking to separate OSI-approved, source-available, open-core, proprietary, and unverified-license tools.

Use Case Rankings

Ordered by ToolVitals score, then health, shipping, confidence, GitHub stars, and name.

#ToolHealthShippingOpennessStarsScoreStatus
01Mautic
Mautic: Open Source Marketing Automation Software.
9795OSI-approved OSS10.5k96Active
02Noptin
Email newsletter plugin for WordPress.
9394OSI-approved OSS2794Active
03Keila
Open Source Newsletter Tool.
8485OSI-approved OSS2.2k84Active
04Listmonk
High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
8777OSI-approved OSS23.4k83Active
05Leadminer
Contact enrichment and email campaign tool for outbound marketing.
8477OSI-approved OSS1581Active
06Card
Open-source HTML email template builder with drag-and-drop editing.
7681OSI-approved OSS42778Active
07UZonMail
Open-source email marketing and bulk mail platform.
7572OSI-approved OSS26574Active
08phpList
Open source email marketing manager for email campaigns and newsletters.
5839OSI-approved OSS87050Warning
09Outreach Studio
Open-source outreach software for cold emailing.
5337OSI-approved OSS8047Warning
10Easy Email Editor
Open-source SaaS email editor built on React and MJML.
4629OSI-approved OSS3k40Critical
11Laudspeaker
📢 Laudspeaker is an Open Source Customer Engagement and Product Onboarding Platform. Open Source alternative to Braze / One Signal / Customer Io / Appcues / Pendo . Use Laudspeaker to design product onboarding flows and send product and event triggered emails, sms, push and more.
3110OSI-approved OSS2.6k22Critical
12BillionMail
BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr
170OSI-approved OSS15.6k10Critical
13Reviews Kits
Open-source testimonial collection and display platform.
143OSI-approved OSS5910Critical
14CadenceRelay
Bulk email platform for personalized campaigns with tracking and analytics.
150OSI-approved OSS59Critical
15Dittofeed
Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨
113OSI-approved OSS2.9k8Critical

Evidence Watch

Tracked tools with useful public signals but no verdict score yet.

Not Scored

Tracked for context, but excluded from rankings because comparable open/source-visible evidence is unavailable.