spam-filter-avoidance SKILL.md skillB
spam-filter-avoidance from chunkydotdev/email-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add chunkydotdev/email-skills/spam-filter-avoidance@git:20260330.4128460Pins git:20260330.4128460 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- chunkydotdev/email-skills
- Path
skills/content/spam-filter-avoidance/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260330.4128460, committed Mar 30, 2026
- First version recorded
- Mar 30, 2026
- Size
- 25,711 bytes
- Repository stars
- 7
- License
- MIT
Avoid triggering spam filters with your email content. Use when emails land in spam, auditing content for filter triggers, checking link patterns, or optimizing HTML structure.
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
# Spam Filter Avoidance Understand how spam filters evaluate your email and write content that passes cleanly - without tricks. ## When to use this skill - Writing email content and want to avoid common spam filter triggers - Emails are landing in spam despite good authentication and reputation - Building HTML email templates and need to know what patterns get flagged - Generating email content programmatically (AI agents, templates with dynamic variables) - Diagnosing why a specific email was filtered when everything else looks correct - Reviewing outbound email for content-level deliverability risks ## Related skills - `inbox-placement` - the full picture of what determines inbox vs spam (reputation, engagement, authentication, and content) - `domain-authentication` - SPF, DKIM, DMARC setup (filters check authentication before content) - `sender-reputation` - reputation signals that outweigh content in filter decisions - `template-design` - building HTML emails that render correctly and avoid structural triggers - `email-compliance` - legal requirements like unsubscribe links that also affect filtering --- ## How spam filters actually work …
Read the whole file at its exact version.
How to install
mdr add chunkydotdev/email-skills/spam-filter-avoidance@sha256:3928c0c2d8fc02a1The line at the top of this page pins the label git:20260330.4128460, 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_g7wwhdoeo7finfu6)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Mar 30, 2026. Its first recorded version is graded C and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260330.4128460 latest | 2026-03-30 | 4128460 | 25,711 B | B | view · diff |
| git:20260330.5ade0ed | 2026-03-30 | 5ade0ed | 25,471 B | C | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (25711 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
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
chunkydotdev/email-skills · 7 stars · license MIT · pushed 2026-10-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_g7wwhdoeo7finfu6 GET https://markdownregistry.com/api/v1/resolve?ref=chunkydotdev/email-skills/spam-filter-avoidance GET https://markdownregistry.com/api/v1/blob/3928c0c2d8fc02a1609c784966c0dc957ede3a92938d5546788dc6b90e6c5bd2
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.