Skill comparison
Compare agent skills before installing.
Put high-signal skills side by side and inspect quality, adoption, freshness, install readiness, use-case fit, and warnings in one place.
Comparing 4 skills
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Mailinabox is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
Mailinabox
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Mailinabox
Best first install candidate based on install readiness and adoption.
Freshest repo
Notifuse
Most recent maintenance signal among this shortlist.
| Signal | Email Verifier :white_check_mark: A Go library for email verification without sending any emails. | Maddy ✉️ Composable all-in-one mail server. | Notifuse Notifuse is an open-source & modern emailing platform | Mailinabox Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box. |
|---|---|---|---|---|
| Quality | 93/100 Excellent | 100/100 Excellent | 99/100 Excellent | 100/100 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 | 1.6K stars 0 installs | 6.0K stars 0 installs | 2.0K stars 0 installs | 15K stars 0 installs |
| Freshness | Feb 26, 2026 | May 26, 2026 | Jun 15, 2026 | May 24, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | Go, Email, Claude Code | Go, Email, Claude Code | Go, 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 AfterShip/email-verifier | $ npx skills add foxcpp/maddy | $ npx skills add Notifuse/notifuse | $ npx skills add mail-in-a-box/mailinabox |