Skill comparison
Compare agent skills before installing.
Comparing 4 skills
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
BillionMail is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
BillionMail
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
BillionMail
Best first install candidate based on install readiness and adoption.
Freshest repo
Frappe
Most recent maintenance signal among this shortlist.
| Signal | Modoboa Mail hosting made simple | BillionMail 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 | Frappe Low code web framework for real world applications, in Python and Javascript | Django Anymail Django email backends and webhooks for Amazon SES, Brevo, MailerSend, Mailgun, Mailjet, Mailtrap, Postmark, Postal, Resend, Scaleway TEM, SendGrid, SparkPost, Unisender Go and more |
|---|---|---|---|---|
| Quality | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent | 98/100 Excellent |
| Decision verdict | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. |
| Adoption | 3.5K stars 0 installs | 15K stars 0 installs | 10K stars 0 installs | 1.9K stars 0 installs |
| Freshness | Jun 15, 2026 | Jun 11, 2026 | Jun 16, 2026 | Apr 18, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | Python, Email, Claude Code | Go, Email, Claude Code | Python, Email, Claude Code | Python, Email, Claude Code |
| Warnings | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet |
| Best for | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals |
| Not ideal for | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review |
| OpenAgentSkill engagement | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies |
| Install | $ npx skills add modoboa/modoboa | $ npx skills add Billionmail/BillionMail | $ npx skills add frappe/frappe | $ npx skills add anymail/django-anymail |