Deliverability Checker
This one checks SPF, DKIM, DMARC, and MX records to figure out why your emails are hitting spam folders. You point it at a domain and get a scored audit with specific fixes, like the exact TXT record values you need to add. Built by ClawFu using dnspython, it's handy when setting up a new sending domain or debugging delivery issues after a migration. The command structure is clean, you can check individual records or run a full audit. Honestly most useful for folks who deal with email config regularly but don't want to manually dig through DNS every time something breaks.
- skills.sh installs
- 261
- GitHub stars
- 150
- last updated
- Aug 21, 2026
Install
$ npx -y skills add guia-matthieu/clawfu-skills --skill deliverability-checker --agent claude-codeInstalls into .claude/skills of the current project.
Files
Email Deliverability Checker
Diagnose email deliverability issues by checking SPF, DKIM, DMARC, and other DNS records - fix why your emails land in spam.
When to Use This Skill
- Delivery troubleshooting - Emails landing in spam
- New domain setup - Configure email authentication
- Migration audit - Verify email config after domain change
- Client onboarding - Check client email health
- Compliance check - Ensure proper authentication
What Claude Does vs What You Decide
| Claude Does | You Decide |
|---|---|
| Structures analysis frameworks | Metric definitions |
| Identifies patterns in data | Business interpretation |
| Creates visualization templates | Dashboard design |
| Suggests optimization areas | Action priorities |
| Calculates statistical measures | Decision thresholds |
Dependencies
pip install dnspython click
Commands
Full Audit
python scripts/main.py audit example.com
python scripts/main.py audit example.com --output report.html
Check SPF
python scripts/main.py spf example.com
Sponsors
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- Repository
- github.com/guia-matthieu/clawfu-skills
- Categories
- Backend & APIs, Security, Debugging
- First seen
- Jun 3, 2026
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