Choosing an email marketing tool means separating full marketing automation platforms from newsletter managers, campaign tools, and email editors. This July 2026 comparison uses ToolVitals data for 24 open or source-visible tools, including health, shipping, licensing, GitHub stars, and overall ToolVitals scores.
The ranking includes only open or source-visible tools and orders them by ToolVitals score from highest to lowest. GitHub stars serve only as a secondary popularity signal and tie-breaker, so a larger star count does not outweigh a stronger ToolVitals score.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Mautic | OSI-approved OSS | GPL-3.0 | 91 | 95 | 10155 | 94 | 🟢 Excellent |
| 2 | Listmonk | OSI-approved OSS | AGPL-3.0 | 95 | 89 | 22196 | 93 | 🟢 Excellent |
| 3 | Noptin | OSI-approved OSS | GPL-3.0 | 80 | 80 | 27 | 84 | 🟢 Excellent |
| 4 | Keila | OSI-approved OSS | AGPL-3.0 | 73 | 73 | 2162 | 80 | 🟢 Excellent |
| 5 | Leadminer | OSI-approved OSS | AGPL-3.0 | 74 | 69 | 15 | 77 | 🟢 Good |
| 6 | phpList | OSI-approved OSS | AGPL-3.0 | 65 | 28 | 860 | 62 | 🟢 Good |
| 7 | Easy Email Editor | OSI-approved OSS | MIT | 54 | 17 | 2675 | 50 | 🟡 Fair |
| 8 | Reviews Kits | OSI-approved OSS | AGPL-3.0 | 42 | 16 | 52 | 48 | 🟡 Fair |
| 9 | Laudspeaker | OSI-approved OSS | AGPL-3.0 | 49 | 14 | 2611 | 47 | 🟡 Fair |
| 10 | BillionMail | OSI-approved OSS | AGPL-3.0 | 49 | 11 | 15328 | 46 | 🟡 Fair |
| 11 | UZonMail | OSI-approved OSS | Apache-2.0 | 51 | 11 | 251 | 46 | 🟡 Fair |
| 12 | Dittofeed | OSI-approved OSS | MIT | 40 | 4 | 2861 | 43 | 🟡 Fair |
| 13 | Card | OSI-approved OSS | AGPL-3.0 | 42 | 10 | 409 | 43 | 🟡 Fair |
| 14 | Responsive Html Email Template | OSI-approved OSS | MIT | 35 | 0 | 13687 | 38 | 🔴 Needs Attention |
| 15 | CadenceRelay | OSI-approved OSS | MIT | 22 | 11 | 5 | 33 | 🔴 Needs Attention |
| 16 | SendPortal | OSI-approved OSS | MIT | 31 | 0 | 2151 | 32 | 🔴 Needs Attention |
| 17 | Outreach Studio | OSI-approved OSS | GPL-2.0 | 26 | 0 | 74 | 31 | 🔴 Needs Attention |
| 18 | Aura Campaigns | OSI-approved OSS | Apache-2.0 | 24 | 0 | 4 | 31 | 🔴 Needs Attention |
| 19 | Parcelvoy | OSI-approved OSS | MIT | 28 | 0 | 534 | 29 | 🔴 Needs Attention |
| 20 | Loopletter | OSI-approved OSS | MIT | 23 | 0 | 5 | 29 | 🔴 Needs Attention |
| 21 | LetterSpace | OSI-approved OSS | MIT | 14 | 0 | 97 | 28 | 🔴 Needs Attention |
| 22 | Recur Email | OSI-approved OSS | MIT | 22 | 0 | 16 | 28 | 🔴 Needs Attention |
| 23 | Mailtrain | OSI-approved OSS | GPL-3.0 | 14 | 0 | 5733 | 25 | 🔴 Needs Attention |
| 24 | OSEMS | OSI-approved OSS | MIT | 8 | 0 | 35 | 24 | 🔴 Needs Attention |
Top 3 Highlights
Mautic ranks first with a ToolVitals score of 94, a health score of 91, and the highest shipping score in the group at 95. It is a marketing automation platform rather than a newsletter-only tool, has 10,155 GitHub stars, and is classified as OSI-approved OSS under GPL-3.0.
Listmonk ranks second with a ToolVitals score of 93 and leads the list on health score at 95. Its focus is narrower than Mautic’s: a self-hosted newsletter and mailing list manager delivered as a single-binary application. It has 22,196 GitHub stars and is classified as OSI-approved OSS under AGPL-3.0.
Noptin ranks third with a ToolVitals score of 84, supported by matching health and shipping scores of 80. It is specifically an email newsletter plugin for WordPress, making it the highest-ranked option in this list for that environment. It has 27 GitHub stars and is classified as OSI-approved OSS under GPL-3.0.
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