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
Mjml is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
Mjml
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Nylas Mail
Best first install candidate based on install readiness and adoption.
Freshest repo
Mailspring
Most recent maintenance signal among this shortlist.
| Signal | Nylas Mail :love_letter: An extensible desktop mail app built on the modern web. Forks welcome! | Mailspring :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux. | Mjml MJML: the only framework that makes responsive-email easy | Espanso A Privacy-first, Cross-platform Text Expander written in Rust |
|---|---|---|---|---|
| Quality | 86/100 Excellent | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 88/100 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 | 25K stars 0 installs | 18K stars 0 installs | 18K stars 0 installs | 14K stars 0 installs |
| Freshness | Nov 24, 2022 | Jun 15, 2026 | Jun 12, 2026 | Jun 14, 2026 |
| Use-case fit | ||||
| Workflow fit | ||||
| Platform hints | JavaScript, Productivity, Claude Code | JavaScript, Email, Claude Code | JavaScript, Email, Claude Code | Rust, Productivity, Claude Code |
| Warnings | Repository looks stale · 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 require actively maintained dependencies · production agents without a repository 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 nylas/nylas-mail | $ npx skills add Foundry376/Mailspring | $ npx skills add mjmlio/mjml | $ npx skills add espanso/espanso |