OpenSkillIndex← back to search
claude-codeopenclawsecurity

Skills mailcheck-email-verification

Email verification skill for MailCheck API - verify emails, bulk processing, authenticity analysis

install
source · Clone the upstream repo
git clone https://github.com/openclaw/skills
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/bnuyts/mailcheck-email-verification" ~/.claude/skills/openclaw-skills-mailcheck-email-verification && rm -rf "$T"
OpenClaw · Install into ~/.openclaw/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/openclaw/skills "$T" && mkdir -p ~/.openclaw/skills && cp -r "$T/skills/bnuyts/mailcheck-email-verification" ~/.openclaw/skills/openclaw-skills-mailcheck-email-verification && rm -rf "$T"
manifest: skills/bnuyts/mailcheck-email-verification/SKILL.md
tags
#email-verification#api-integration#data-validation#risk-assessment#security#authentication
source content

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