email-verifier
Verifies whether an email address is deliverable by checking DNS and SMTP records. Use when the user wants to check if an email is valid, verify an email address, or assess deliverability before sending.
Install
With your agent
Install OMGSkills skill "hunter-io/claude-plugin:skills/email-verifier" into this agent's normal skills directory: call the OMGSkills MCP get_install_plan tool for your agent and run the script it returns (it installs only the pinned commit and verifies SKILL.md), and stop if MCP or the pin is unavailable. Do not overwrite or change existing skills without asking me.
Manual command
git clone https://github.com/hunter-io/claude-plugin /tmp/claude-plugin && ln -s /tmp/claude-plugin/skills/email-verifier ~/.claude/skills/email-verifierFrom README
Email Verifier Check whether an email address is deliverable before you send to it. Examples /hunter:email-verifier jane@stripe.com "Is john@acme.com a valid email?" "Check if sarah@notion.so is deliverable" "Verify these emails: a@x.com, b@y.com, c@z.com" "Can I send to hello@example.com?" Steps Parse the input. Extract the email address(es). Call Email-Verifier for each email. Present the result with an actionable recommendation: Interpret the result clearly based on the status field: valid (score 80+) -> "Safe to send. This email address is deliverable with high confidence." acceptall -> "Proceed with caution. This mail server accepts all addresses, so delivery is not guaranteed even though SMTP checks pass." unknown -> "Unable to determine deliverability. The mail server didn't respond clearly -- consider sending a low-priority test first." invalid (score below 50) -> "Do not send.
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