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twilio-email-deliverability-advisor

Deliverability advisor for the Twilio Email API specifically. Use ONLY when the developer explicitly mentions Twilio Email, comms.twilio.com, or a Twilio (non-SendGrid) email program. For all other deliverability questions — including generic ones — use twilio-sendgrid-deliverability-advisor.

55

Quality

62%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./plugins/twilio-developer-kit/skills/twilio-email-deliverability-advisor/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

50%

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

A well-organized, honest advisor that clearly flags Twilio Email's tooling gaps and routes the user to support. Its weaknesses are reliance on generic best-practice content Claude already knows, several soft 'contact support' action paths, and a diagnostic workflow that is implied by the output format rather than explicitly sequenced.

Suggestions

Replace the generic Foundation Checklist (never buy lists, double opt-in) with Twilio-Email-specific guidance, or move it to a referenced file, to tighten conciseness.

Promote the Acute/Gradual/Proactive diagnosis into an explicit numbered workflow with checkpoints rather than only surfacing it in the output template.

Tighten actionability by giving specific manual warmup steps or concrete Event Webhook configuration commands instead of deferring to 'contact Twilio Support' for actionable items.

DimensionReasoningScore

Conciseness

The body is mostly lean tables and checklists, but it restates general email knowledge Claude already knows ('Never buy email lists', 'Use double opt-in') and repeats the dedicated-IP limitation in two sections; this matches the 'mostly efficient but includes some unnecessary explanation' anchor.

2 / 3

Actionability

It gives concrete specifics (numeric bounce/complaint thresholds, verbatim redirect message, exact output template), but several paths are soft ('Follow manual warmup best practices', 'contact Twilio Sales', 'Contact Twilio Support for current webhook event schema'), leaving guidance incomplete rather than copy-paste ready.

2 / 3

Workflow Clarity

Step 0 platform identification is a clear sequenced checkpoint with a decision table, but the core diagnostic process (Acute/Gradual/Proactive) appears only in the output template rather than as an explicitly sequenced workflow with checkpoints, matching the 'steps present but checkpoints missing or implicit' anchor.

2 / 3

Progressive Disclosure

There are no bundle files and the content is well-sectioned, but it is a single ~100-line monolithic file with generic Foundation Checklist material inline that could be split into a reference; this fits 'some structure but content that should be separate is inline'.

2 / 3

Total

8

/

12

Passed

Description

75%

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

A well-scoped description that clearly separates the Twilio Email advisor from its SendGrid sibling with explicit trigger and redirect guidance. Its main weakness is relying on platform-identity triggers and an abstract 'advisor' role rather than concrete actions and problem keywords users naturally say.

Suggestions

Add concrete actions to the description (e.g. 'diagnose bounce and spam-complaint rates, verify SPF/DKIM/DMARC authentication, recommend warmup steps') to lift specificity from 2 to 3.

Include problem-oriented trigger terms users actually say (emails going to spam, blocked, not reaching inbox, high bounce rate) alongside the platform-identity triggers.

DimensionReasoningScore

Specificity

It names the domain ('Deliverability advisor for the Twilio Email API specifically') but only states the advisory role rather than listing multiple concrete actions (e.g. diagnose bounces, verify SPF/DKIM/DMARC), matching the 'names domain and some actions, but not comprehensive' anchor.

2 / 3

Completeness

It answers both what ('Deliverability advisor for the Twilio Email API') and when ('Use ONLY when the developer explicitly mentions Twilio Email, comms.twilio.com...') with an explicit trigger clause, matching the top anchor; the explicit 'Use ONLY when' clause avoids the completeness cap at 2.

3 / 3

Trigger Term Quality

Triggers on platform identity ('Twilio Email, comms.twilio.com, or a Twilio (non-SendGrid) email program') which are relevant, but it omits the problem-oriented natural terms users actually say (spam, bounce, inbox, blocked) that appear only in the body.

2 / 3

Distinctiveness Conflict Risk

It carves a clear niche and actively redirects to the sibling skill ('For all other deliverability questions... use twilio-sendgrid-deliverability-advisor'), making accidental triggering for the wrong skill unlikely.

3 / 3

Total

10

/

12

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
openai/plugins
Reviewed

Table of Contents

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