email-systems SKILL.md skillF
email-systems from travisjneuman/.claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add travisjneuman/.claude/email-systems@git:20261006.3938f60Pins git:20261006.3938f60 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- F, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- travisjneuman/.claude
- Path
skills/email-systems/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261006.3938f60, committed Oct 6, 2026
- First version recorded
- Feb 7, 2026
- Size
- 17,647 bytes
- Repository stars
- 105
- License
- MIT
Transactional email (Resend, SendGrid, SES), templates (React Email, MJML), deliverability (SPF/DKIM/DMARC), and inboxing best practices. Use when building email infrastructure, designing templates, or troubleshooting deliverability.
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 Systems ## Overview This skill covers building reliable email systems for web applications, including transactional email sending, template design, deliverability optimization, and inbox placement. It addresses integration with email service providers (Resend, AWS SES, SendGrid, Postmark), building responsive HTML email templates with React Email and MJML, configuring DNS records for deliverability (SPF, DKIM, DMARC), managing email types (transactional, notification, marketing), queue management, and bounce/complaint handling. Use this skill when sending welcome emails, password resets, order confirmations, notification digests, marketing campaigns, or any system-generated email. Also use when debugging deliverability issues or migrating between email providers. --- ## Core Principles 1. **Transactional and marketing are different** - Transactional emails (password reset, receipt) must arrive instantly and reliably. Marketing emails (newsletter, promo) can be batched and should have unsubscribe links. Never mix them on the same sending domain. …
Read the whole file at its exact version.
How to install
mdr add travisjneuman/.claude/email-systems@sha256:6d836c45c516dd8cThe line at the top of this page pins the label git:20261006.3938f60, 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_vl32mklmmdfy3bwr)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Feb 7, 2026 and Oct 6, 2026, about one every 121 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261006.3938f60 latest | 2026-10-06 | 3938f60 | 17,647 B | F | view · diff |
| git:20260228.62823bf | 2026-02-28 | 62823bf | 17,526 B | F | view · diff |
| git:20260207.49cc324 | 2026-02-07 | 49cc324 | 17,517 B | F | view |
Audit of the latest version
- FAIL, critical: No instruction to send local credentials anywhere (matched: send = new Resend(process.env)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (17647 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 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
travisjneuman/.claude · 105 stars · license MIT · pushed 2026-10-19 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_vl32mklmmdfy3bwr GET https://markdownregistry.com/api/v1/resolve?ref=travisjneuman/.claude/email-systems GET https://markdownregistry.com/api/v1/blob/6d836c45c516dd8ca0e932b65964afa3176be50c99defcf6ca7759fdfd332021
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.