Individual skill
email-deliverability
Make sure email actually reaches inboxes. Use this skill when setting up email authentication (SPF, DKIM, DMARC), diagnosing emails landing in spam, planning a domain reputation strategy, monitoring sender reputation, or hardening against email spoofing. Triggers on email deliverability, SPF, DKIM, DMARC, spam folder, sender reputation, mailbox provider, soft bounces, bounce rate, BIMI, MTA-STS, deliverability audit. Also triggers when a marketing or transactional email isn't reaching users.
dist/codex/.agents/skills/email-deliverability/SKILL.md
Source commit 9b90db257f7395fab76ff9bfcb808456709f6af3
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 4, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,047
- Repository last updated
- Oct 27, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- claude Repository topic
- claude-skills Repository topic
- anthropic Repository topic
- mcp Repository topic
- seo Repository topic
- web-development Repository topic
- agent-skills Repository topic
- claude-code Repository topic
- product-management Repository topic
- web-design Repository topic
- security Derived category
- marketing Derived category
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SKILL.mdcore · 11,369 bytesSKILL.mdcore · 11,369 bytesreferences/_claude-frontmatter-extras.yamlasset · 400 bytesreferences/dmarc-rollout-playbook.mddoc · 9,199 bytes
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# Email Deliverability
Get email into inboxes, not spam folders. Set up authentication. Monitor reputation. Diagnose problems before they hurt the business.
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## When to use
- Setting up email for a new domain
- A meaningful percentage of email is going to spam
- Customers report they're not receiving emails
- Setting up DMARC, SPF, or DKIM
- Hardening against domain spoofing
- Migrating email service providers