Email marketing stacks cover different jobs: campaign automation, newsletters, mailing lists, editors, bulk sending, and subscriber management. ToolVitals’ June 2026 data compares open/source-visible Email Marketing Tools using health, shipping activity, openness, licensing, GitHub stars, and the overall ToolVitals score, so the list is better read as a maintenance-and-visibility snapshot than a feature checklist.
The ranking includes only open/source-visible tools and sorts by ToolVitals score first, with GitHub stars used as a secondary popularity signal when scores are close. Every ranked tool here is labeled OSI-approved OSS, with license_label values shown exactly from the data rather than inferred from project positioning.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Mautic | OSI-approved OSS | GPL-3.0 | 89 | 93 | 9829 | 93 | 🟢 Excellent |
| 2 | Listmonk | OSI-approved OSS | AGPL-3.0 | 88 | 84 | 21616 | 88 | 🟢 Excellent |
| 3 | Leadminer | OSI-approved OSS | AGPL-3.0 | 77 | 90 | 14 | 85 | 🟢 Excellent |
| 4 | Keila | OSI-approved OSS | AGPL-3.0 | 83 | 67 | 2117 | 82 | 🟢 Excellent |
| 5 | Noptin | OSI-approved OSS | GPL-3.0 | 77 | 77 | 27 | 82 | 🟢 Excellent |
| 6 | Reviews Kits | OSI-approved OSS | AGPL-3.0 | 49 | 41 | 52 | 60 | 🟢 Good |
| 7 | BillionMail | OSI-approved OSS | AGPL-3.0 | 69 | 18 | 15150 | 58 | 🟡 Fair |
| 8 | Dittofeed | OSI-approved OSS | MIT | 56 | 20 | 2808 | 56 | 🟡 Fair |
| 9 | Easy Email Editor | OSI-approved OSS | MIT | 65 | 17 | 2505 | 55 | 🟡 Fair |
| 10 | Card | OSI-approved OSS | AGPL-3.0 | 53 | 16 | 408 | 52 | 🟡 Fair |
| 11 | UZonMail | OSI-approved OSS | Apache-2.0 | 44 | 38 | 244 | 50 | 🟡 Fair |
| 12 | phpList | OSI-approved OSS | AGPL-3.0 | 51 | 7 | 851 | 47 | 🟡 Fair |
| 13 | CadenceRelay | OSI-approved OSS | MIT | 30 | 35 | 4 | 44 | 🟡 Fair |
| 14 | Responsive Html Email Template | OSI-approved OSS | MIT | 30 | 0 | 13688 | 36 | 🔴 Needs Attention |
| 15 | SendPortal | OSI-approved OSS | MIT | 31 | 0 | 2142 | 32 | 🔴 Needs Attention |
| 16 | Outreach Studio | OSI-approved OSS | GPL-2.0 | 26 | 0 | 62 | 31 | 🔴 Needs Attention |
| 17 | Aura Campaigns | OSI-approved OSS | Apache-2.0 | 24 | 0 | 4 | 31 | 🔴 Needs Attention |
| 18 | Loopletter | OSI-approved OSS | MIT | 23 | 0 | 5 | 29 | 🔴 Needs Attention |
| 19 | Social Ring | OSI-approved OSS | MIT | 26 | 0 | 0 | 29 | 🔴 Needs Attention |
| 20 | LetterSpace | OSI-approved OSS | MIT | 14 | 0 | 98 | 28 | 🔴 Needs Attention |
| 21 | Recur Email | OSI-approved OSS | MIT | 22 | 0 | 16 | 28 | 🔴 Needs Attention |
| 22 | Laudspeaker | OSI-approved OSS | AGPL-3.0 | 14 | 0 | 2603 | 27 | 🔴 Needs Attention |
| 23 | Parcelvoy | OSI-approved OSS | MIT | 23 | 0 | 530 | 26 | 🔴 Needs Attention |
| 24 | OSEMS | OSI-approved OSS | MIT | 22 | 0 | 34 | 26 | 🔴 Needs Attention |
| 25 | Mailtrain | OSI-approved OSS | GPL-3.0 | 14 | 0 | 5733 | 25 | 🔴 Needs Attention |
Top 3 Highlights
Mautic ranks first with a 93 ToolVitals score, the highest shipping score in the set at 93, and an 89 health score. It is labeled OSI-approved OSS under GPL-3.0, has 9,829 GitHub stars, and is marked 🟢 Excellent, making it the strongest all-around option in this June 2026 dataset.
Listmonk ranks second with an 88 ToolVitals score and the largest GitHub footprint among the top five at 21,616 stars. Its 88 health score and 84 shipping score are both strong, and it is labeled OSI-approved OSS under AGPL-3.0, with a focus on self-hosted newsletters and mailing lists.
Leadminer ranks third with an 85 ToolVitals score, driven by a 90 shipping score despite only 14 GitHub stars. The data labels it OSI-approved OSS under AGPL-3.0, and its description points more toward contact enrichment and outbound email campaigns than traditional newsletter management.
Want to see the full health, shipping, openness, and evidence details for every tool in Email Marketing? Browse all Email Marketing Tools →