Skill comparison
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Strongest overall
email-deliverability-audit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
email-deliverability-audit
Best first install candidate based on install readiness and adoption.
Freshest repo
email-deliverability-audit
Most recent maintenance signal among this shortlist.
| Signal | email-deliverability-audit Diagnostic audit for a running cold email program. Checks domain authentication (SPF/DKIM/DMARC), inbox health/reputation from Smartlead, bounce rate by inbox type, and optionally runs a spam placement test via Smartlead's Smart Delivery API. Outputs markdown report + CSV with per-domain/per-inbox scores and concrete action items. Use when reply rates drop, when bounces spike, when onboarding someone else's account, or as a weekly/monthly health check. |
|---|---|
| Quality | 75/100 Strong |
| Decision verdict | 86/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack. |
| Adoption | 682 stars Verified outcomes are shown on each skill page |
| Freshness | Aug 18, 2026 |
| Use-case fit | |
| Workflow fit | |
| Platform hints | Claude Code |
| Warnings | The scripts pass domain names directly into shell commands (dig) without sanitization, which could allow command injection if a malicious domain string is provided. However, this is a local tool and the risk is low. · No OpenAgentSkill engagement data yet |
| Best for | Email and calendar workflows · Claude Code teams · teams that value GitHub adoption signals |
| Not ideal for | teams that need a vendor-supported SLA · production agents without a repository review |
| OpenAgentSkill engagement | 0 views 0 install copies |
| Install | $ npx skills add growthenginenowoslawski/coldoutboundskills --skill email-deliverability-audit |