email-deliverability SKILL.md skillA
email-deliverability from rampstackco/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add rampstackco/claude-skills/email-deliverability@git:20260507.ac2b078Pins git:20260507.ac2b078 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- rampstackco/claude-skills
- Path
skills/email-deliverability/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260507.ac2b078, committed May 7, 2026
- First version recorded
- Apr 28, 2026
- Size
- 11,489 bytes
- Repository stars
- 1,037
- License
- MIT
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.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Email Deliverability Get email into inboxes, not spam folders. Set up authentication. Monitor reputation. Diagnose problems before they hurt the business. --- ## 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 - Sender reputation has dropped - Pre-launch audit before sending volume increases ## When NOT to use - Writing the email content itself (use `email-sequences`) - Designing the email program strategy (use `email-sequences`) - DNS records in general (use `domain-strategy`) - Outbound spam coming FROM your account (different problem; investigate compromised credentials) --- ## Required inputs - The sending domain(s) - The email service provider (ESP, transactional service, mail server) - Current DNS records (or access to them) - Email volume (transactional vs marketing, daily volume) - Current deliverability state (if known: bounce rate, spam complaints) --- ## The framework: 3 pillars …
Read the whole file at its exact version.
How to install
mdr add rampstackco/claude-skills/email-deliverability@sha256:d321d0661dbb4715The line at the top of this page pins the label git:20260507.ac2b078, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ssd3f4sqh2n2chtc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Apr 28, 2026 and May 7, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260507.ac2b078 latest | 2026-05-07 | ac2b078 | 11,489 B | A | view · diff |
| git:20260505.c80b896 | 2026-05-05 | c80b896 | 11,449 B | A | view · diff |
| git:20260428.f066ffe | 2026-04-28 | f066ffe | 11,329 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11489 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
rampstackco/claude-skills · 1,037 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ssd3f4sqh2n2chtc GET https://markdownregistry.com/api/v1/resolve?ref=rampstackco/claude-skills/email-deliverability GET https://markdownregistry.com/api/v1/blob/d321d0661dbb471567570631f1b7ee031a7d96e1696206770af362eb2f1119e3
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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