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
Mailu is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
Mailu
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Mailu
Best first install candidate based on install readiness and adoption.
Freshest repo
MimeKit
Most recent maintenance signal among this shortlist.
| Signal | MailKit A cross-platform .NET library for IMAP, POP3, and SMTP. | MimeKit A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools. | Maddy ✉️ Composable all-in-one mail server. | Mailu Insular email distribution - mail server as Docker images |
|---|---|---|---|---|
| Quality | 100/100 Excellent | 100/100 Excellent | 100/100 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 | 6.8K stars 0 installs | 2.0K stars 0 installs | 6.0K stars 0 installs | 7.3K stars 0 installs |
| Freshness | Jun 12, 2026 | Jun 15, 2026 | May 26, 2026 | May 31, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | C#, Email, Claude Code | C#, 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 jstedfast/MailKit | $ npx skills add jstedfast/MimeKit | $ npx skills add foxcpp/maddy | $ npx skills add Mailu/Mailu |