email-best-practices SKILL.md skillA
email-best-practices from asymmetric-al/core is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add asymmetric-al/core/email-best-practices@v1.0.2Pins v1.0.2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- asymmetric-al/core
- Path
.agents/skills/email-best-practices/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0.2, committed Oct 1, 2026
- First version recorded
- Feb 18, 2026
- Size
- 4,093 bytes
- Repository stars
- 370
- License
- AGPL-3.0
Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, making emails accessible (alt text, headings, contrast, screen readers), or deciding transactional vs marketing.
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 Best Practices
Guidance for building deliverable, compliant, user-friendly emails.
## Architecture Overview
```
[User] → [Email Form] → [Validation] → [Double Opt-In]
↓
[Consent Recorded]
↓
[Suppression Check] ←──────────────[Ready to Send]
↓
[Idempotent Send + Retry] ──────→ [Email API]
↓
[Webhook Events]
↓
┌────────┬────────┬─────────────┐
↓ ↓ ↓ ↓
Delivered Bounced Complained Opened/Clicked
↓ ↓
[Suppression List Updated]
↓
[List Hygiene Jobs]
```
## Quick Reference
| Need to... | See |
|------------|-----|
| Set up SPF/DKIM/DMARC, fix spam issues | [Deliverability](./references/deliverability.md) |
| Build password reset, OTP, confirmations | [Transactional Emails](./references/transactional-emails.md) <!-- pragma: allowlist secret --> |
…Read the whole file at its exact version.
How to install
mdr add asymmetric-al/core/email-best-practices@sha256:47441373ace6fc6aThe line at the top of this page pins the label v1.0.2, 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_dkkajlu5yworr76b)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 18, 2026 and Oct 1, 2026, about one every 75 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.2 latest | 2026-10-01 | 4ae104e | 4,093 B | A | view · diff |
| v1.0.2 | 2026-09-23 | 15c9348 | 4,081 B | A | view · diff |
| v1.0.2 | 2026-05-26 | 54acd2a | 3,637 B | A | view · diff |
| git:20260218.048cbae | 2026-02-18 | 048cbae | 3,755 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 (4093 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
asymmetric-al/core · 370 stars · license AGPL-3.0 · pushed 2026-11-06 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_dkkajlu5yworr76b GET https://markdownregistry.com/api/v1/resolve?ref=asymmetric-al/core/email-best-practices GET https://markdownregistry.com/api/v1/blob/47441373ace6fc6a63bfdcb94a2dd29ba24220abe663b3ae0b1c22cbe6e754e9
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.