Deliverability Check

Skill Verified Active

Audit a sending domain's deliverability — SPF, DKIM, DMARC, MX, BIMI, blocklists — with a prioritized fix order

Purpose

To help users understand and improve their email sending domain's deliverability by identifying and prioritizing critical configuration issues.

Features

Audits SPF, DKIM, DMARC, MX, and BIMI records
Checks for common blocklist entries
Provides a prioritized order of fixes
Explains findings in plain English for non-technical users
Identifies common ESP sender configurations

Use Cases

When email open rates suddenly drop
Before launching a new email sending domain
To verify email infrastructure health
To prepare for upcoming email provider policy changes (e.g., Gmail/Yahoo)

Non-Goals

Performing automated fixes for DNS records
Full, API-based blocklist scanning
Analyzing actual email sending history or inbox placement rates (this requires connecting ESP data via MCP)

Installation

npx skills add cognyai/claude-code-marketing-skills

Runs the Vercel skills CLI (skills.sh) via npx — needs Node.js locally and at least one installed skills-compatible agent (Claude Code, Cursor, Codex, …). Assumes the repo follows the agentskills.io format.

Quality Score

Verified

97 /100

Analyzed about 22 hours ago

Trust Signals

Last commit7 days ago

GitHub owner cognyai

Stars47

Websitecogny.com

Status

View Source

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