MailCheck Email Verification

Verify email addresses with the MailCheck API - comprehensive email validation with syntax, disposable, DNS, and SMTP checks.

Features

• Single Email Verification - Verify one email at a time
• Bulk Verification - Verify up to 100 emails in one request
• Authenticity Analysis - Detect phishing, spoofing, and email fraud
• Risk Scoring - 0-100 score with risk level (low/medium/high)

Commands

email-verify - Verify single email

Verifies a single email address.

Parameters:

• email (required): Email address to verify
• api_key (optional): MailCheck API key (falls back to MAILCHECK_API_KEY env var)

Example:

email-verify email="user@example.com" api_key="sk_live_..."

email-bulk-verify - Bulk verification

Verifies up to 100 email addresses in one request.

Parameters:

• emails (required): Array of email addresses
• api_key (optional): MailCheck API key

Example:

email-bulk-verify emails="[user1@example.com, user2@gmail.com]" api_key="sk_live_..."

email-auth-verify - Email authenticity analysis

Analyzes email headers for spoofing, phishing, and CEO fraud.

Parameters:

• headers (required): Email headers to analyze
• trusted_domains (optional): Domains for lookalike detection
• api_key (optional): MailCheck API key

Example:

email-auth-verify headers="From: sender@example.com\nReceived: ..." trusted_domains="[company.com]"

Environment Variables

Set MAILCHECK_API_KEY with your MailCheck API key to avoid passing it on every command.

Installation

This skill is available on ClawHub.

clawhub install mailcheck-email-verification

API Reference

See full API documentation: https://api.mailcheck.dev/docs

Repository

Source code: https://github.com/bnuyts/mailcheck-skill

License

MIT