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
PHPMailer is the strongest overall pick here because it has a 100/100 readiness score and fits Workflow automation.
Strongest overall
PHPMailer
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
PHPMailer
Best first install candidate based on install readiness and adoption.
Freshest repo
React Email
Most recent maintenance signal among this shortlist.
| Signal | Mailyak An elegant MIME/SMTP email library with support for attachments | PHPMailer The classic email sending library for PHP | 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. | React Email 💌 Build and send emails using React |
|---|---|---|---|---|
| Quality | 52/100 Needs review | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 42/100 Needs manual review Do a manual repository review before adding this to an agent workflow. | 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 | 351 stars 0 installs | 22K stars 0 installs | 15K stars 0 installs | 19K stars 0 installs |
| Freshness | Nov 1, 2023 | Jun 6, 2026 | May 24, 2026 | Jun 12, 2026 |
| Use-case fit | ||||
| Stack fit | ||||
| Platform hints | Go, Email, Claude Code | PHP, Email, Claude Code | Python, Email, Claude Code | TypeScript, Email, 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 · builders willing to evaluate younger projects | 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 domodwyer/mailyak | $ npx skills add PHPMailer/PHPMailer | $ npx skills add mail-in-a-box/mailinabox | $ npx skills add resend/react-email |