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
Mailspring is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
Mailspring
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Mailspring
Best first install candidate based on install readiness and adoption.
Freshest repo
Mailspring
Most recent maintenance signal among this shortlist.
| Signal | Webmail JMAP Webmail built for the 21st Century. A modern, self-hosted email client for Stalwart Mail Server powered by the JMAP protocol. Email, calendar, contacts and files. Fast, private, and open source. | Kurrier Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage. | Bichon Bichon – A lightweight, high-performance Rust email archiver with WebUI | Mailspring :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux. |
|---|---|---|---|---|
| Quality | 80/100 Strong | 82/100 Strong | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 91/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. | 93/100 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 | 617 stars 0 installs | 980 stars 0 installs | 1.8K stars 0 installs | 18K stars 0 installs |
| Freshness | Jun 15, 2026 | Jun 10, 2026 | Jun 11, 2026 | Jun 15, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | TypeScript, Email, Claude Code | TypeScript, Email, Claude Code | TypeScript, Email, Claude Code | JavaScript, 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 bulwarkmail/webmail | $ npx skills add kurrier-org/kurrier | $ npx skills add rustmailer/bichon | $ npx skills add Foundry376/Mailspring |