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deliverability-checker

Audit DNS records for SPF, DKIM, DMARC, and MX configurations.

145|28|Updated Jan 31, 2026
Search Tags:#email deliverability#spam#spf#dkim#dmarc#dns records
One-click install
npx skills add https://github.com/guia-matthieu/clawfu-skills --skill deliverability-checker
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: deliverability-checker
Source: https://github.com/guia-matthieu/clawfu-skills/tree/main/skills/email-tools/deliverability-checker
Command: npx skills add https://github.com/guia-matthieu/clawfu-skills --skill deliverability-checker

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires dnspython, click, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill diagnoses and helps resolve issues preventing emails from reaching their intended recipients, ensuring your messages land in the inbox, not the spam folder.

Core Features & Use Cases

  • DNS Record Auditing: Checks SPF, DKIM, DMARC, and MX records for proper configuration.
  • Spam Folder Troubleshooting: Identifies common authentication errors that lead to emails being flagged as spam.
  • New Domain Setup: Guides users through setting up essential email authentication records for new domains.

Quick Start

Use the deliverability checker skill to audit the email deliverability for example.com.

Frequently Asked Questions about deliverability-checker

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I check SPF, DKIM, and DMARC records to fix email spam issues?▼

To fix email spam issues, you audit SPF, DKIM, and DMARC DNS records using this checker to identify authentication errors preventing emails from reaching the inbox.

Why does my email go to the spam folder even with authentication set up?▼

Emails go to the spam folder when DNS records like SPF, DKIM, or DMARC contain misconfigurations, which this deliverability checker audits to pinpoint exact authentication protocol errors.

How do I set up email authentication DNS records for a new domain?▼

Setting up email authentication for a new domain requires configuring SPF, DKIM, DMARC, and MX records, and this skill guides you through establishing these essential DNS configurations.

Do I need dnspython and click installed to run DNS record audits?▼

Yes, you need the dnspython and click libraries installed, as they are required dependencies for executing DNS resolution and running the command-line interface for deliverability audits.

Can I verify MX records along with SPF and DKIM configurations?▼

Yes, you can verify MX records alongside SPF, DKIM, and DMARC configurations, as the deliverability checker audits all these DNS records to ensure proper email routing and authentication.

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