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npx claudepluginhub psylch/email-dns-health-skillAudit and validate email DNS records (SPF, DKIM, DMARC, BIMI, MTA-STS, MX) for any domain. Detect email providers, count SPF DNS lookups, grade overall health A-F, and provide fix guidance. Use when the user says 'check email DNS', 'audit SPF/DKIM/DMARC', 'email deliverability check', 'detect email provider', 'fix email DNS', 'setup email records', or 'email health score'.
A zero-dependency email DNS health checker skill for AI coding agents. Audits SPF, DKIM, DMARC, BIMI, MTA-STS, and MX records using only dig and jq. Detects email providers, counts SPF DNS lookups against the 10-lookup limit, grades overall email health A-F, and provides actionable fix guidance.
npx skills add psylch/email-dns-health-skill -g -y
git clone https://github.com/psylch/email-dns-health-skill.git ~/.claude/skills/email-dns-health
Restart your agent after installation.
dig (DNS lookup utility)jq (JSON processor)The skill activates automatically when you mention email DNS topics. Example prompts:
| Command | Description |
|---|---|
audit <domain> | Full email DNS health check with A-F grade |
check-spf <domain> | SPF validation with DNS lookup counting |
check-dkim <domain> [selector] | DKIM key validation (auto-detects selectors) |
check-dmarc <domain> | DMARC policy validation |
detect-provider <domain> | Detect email provider from MX/SPF |
setup-guide <provider> | DNS setup guide for a provider |
fix <domain> | Interactive fix workflow (supports Cloudflare API) |
[Email DNS Health] Audit Complete
Domain: example.com
Grade: A
Score: 100/120 (core 100/100 + bonus 0/20)
Core (determines deliverability):
SPF: ✓ valid (7/10 lookups) 30/30
DKIM: ✓ valid (2048-bit RSA) 30/30
DMARC: ✓ strong (policy: reject) 40/40
Bonus (nice-to-have):
BIMI: ✗ missing 0/10
MTA-STS: ✗ missing 0/10
MX: ✓ valid (provider: Google Workspace)
Issues: 0
MIT