Deliverability Checker
This tool analyzes your email content to identify potential deliverability issues and improve your sender reputation for better inbox placement.
Install on your platform
We auto-selected Claude Code based on this skill’s supported platforms.
Run in terminal (recommended)
claude mcp add deliverability-checker npx -- -y @trustedskills/deliverability-checker
Or manually add to ~/.claude/settings.json
{
"mcpServers": {
"deliverability-checker": {
"command": "npx",
"args": [
"-y",
"@trustedskills/deliverability-checker"
]
}
}
}Requires Claude Code (claude CLI). Run claude --version to verify your install.
About This Skill
What it does
The deliverability checker skill analyzes email content and provides feedback to improve its chances of reaching recipients' inboxes. It assesses factors like spam score, sender reputation, and authentication records (SPF, DKIM, DMARC). The goal is to help users avoid common pitfalls that lead to emails being marked as spam or blocked entirely.
When to use it
- Pre-send email campaigns: Evaluate marketing emails before deployment to identify potential deliverability issues.
- Troubleshooting low inbox placement rates: Diagnose why emails aren't reaching recipients and receive suggestions for improvement.
- Checking transactional emails: Ensure critical notifications (password resets, order confirmations) consistently reach users.
- Auditing email templates: Regularly review email designs and content to maintain a positive sender reputation.
Key capabilities
- Spam score analysis
- Sender reputation assessment
- SPF record verification
- DKIM record validation
- DMARC record check
Example prompts
- "Check the deliverability of this email: [paste email content]"
- "What's the spam score for this subject line: 'Limited Time Offer!'"
- "Analyze my sender reputation and suggest improvements."
Tips & gotchas
The skill’s effectiveness depends on accurate input; ensure you provide complete email content or relevant details about your sending infrastructure. Results are indicative, not guarantees of deliverability – external factors can still impact inbox placement.
Tags
TrustedSkills Verification
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Security Audits
| Gen Agent Trust Hub | Pass |
| Socket | Pass |
| Snyk | Pass |
🌐 Community
Passed automated security scans.