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email-systems

You are an email systems engineer who has maintained 99.9% deliverability across millions of emails. You've debugged SPF/DKIM/DMARC, dealt with blacklists, and optimized for inbox placement. You know that email is the highest ROI channel when done right, and a spam folder nightmare when done wrong.

44

Quality

45%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./plugins/AI-Agents-Safe-Coding-Skills/skills/email-systems/SKILL.md

The canonical home for this skill is email-systems in administrakt0r/AI-Agents-Safe-Coding-Skills

SKILL.md
Quality
Evals
Security

Quality

Content

43%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is cleanly structured and lean, but it provides almost no executable guidance: patterns and anti-patterns are one-line abstractions, and the Sharp Edges solutions are empty heading placeholders with no actual instructions.

Suggestions

Fill the Sharp Edges 'Solution' column with concrete content (actual SPF/DKIM/DMARC record examples, an IP warm-up schedule, multipart/alternative code) instead of bare comment-style headings.

Convert the one-line Patterns into actionable steps with example code or commands (e.g., a queued-send retry snippet, a bounce/complaint webhook handler).

Replace the generic 'When to Use' boilerplate with concrete trigger conditions (sending infrastructure setup, deliverability drops, blacklist resolution).

DimensionReasoningScore

Conciseness

Mostly short, but it re-states the description's persona paragraph and explains basics Claude already knows ('Outlook breaks everything', 'Images blocked by default'), so it could be tightened.

3 / 5

Actionability

Patterns are high-level hints ('Queue all transactional emails with retry logic and monitoring') with no code, commands, or config, and the Sharp Edges 'Solution' column holds empty placeholders like '# Required DNS records:' with no actual guidance.

2 / 5

Workflow Clarity

There is no sequenced workflow or validation checkpoints; the body is a flat list of patterns, anti-patterns, and a risk table rather than steps to execute.

2 / 5

Progressive Disclosure

Under 50 lines, well-organized into clear sections (Patterns, Anti-Patterns, Sharp Edges, When to Use) with no nested references, meeting the simple-skill exception for a 5.

5 / 5

Total

12

/

20

Passed

Description

47%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is a second-person persona credential dump rather than a capability statement: it names the domain and trigger keywords well but lacks any explicit 'what does this skill do' actions or a 'when to use it' clause.

Suggestions

Rewrite in third person as concrete skill actions (e.g., 'Configures and validates SPF/DKIM/DMARC records, monitors deliverability and bounces, warms up sending IPs').

Add an explicit 'Use when...' trigger clause naming natural user phrases (e.g., 'Use when the user mentions email deliverability, SPF/DKIM/DMARC setup, blacklists, or inbox placement').

Drop the persona credentials ('99.9% deliverability across millions of emails') which read as fluff and over-claim rather than describing skill capabilities.

DimensionReasoningScore

Specificity

Names the email domain and a few concrete activities ('debugged SPF/DKIM/DMARC, dealt with blacklists, and optimized for inbox placement') but these are persona biography, not skill actions; second-person voice ('You are', 'You've') reduces specificity by 1 per guideline.

2 / 5

Completeness

Presents a vague persona-based 'what' with no 'when' / Use-when trigger clause at all; the missing when caps at 3 but the what is persona-vague, landing at 2.

2 / 5

Trigger Term Quality

Good natural-term coverage ('email', 'deliverability', 'SPF/DKIM/DMARC', 'blacklists', 'inbox placement', 'spam folder') that users would say, with a few synonyms missing.

4 / 5

Distinctiveness Conflict Risk

Email deliverability is a clear, distinct niche with domain-specific triggers, carrying only minor overlap risk with closely related skills.

4 / 5

Total

12

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
administrakt0r/AI-Agents-Safe-Coding-Skills
Reviewed

Table of Contents

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