Emaillistchecker.io Email Verification
Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
Connect it
Settings → Connectors → Add custom connector
URL: https://platform.emaillistchecker.io/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://platform.emaillistchecker.io/mcp{
"mcpServers": {
"email-verification": {
"url": "https://platform.emaillistchecker.io/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}claude mcp add --transport http email-verification https://platform.emaillistchecker.io/mcp --header "Authorization: <value>"{
"servers": {
"email-verification": {
"type": "http",
"url": "https://platform.emaillistchecker.io/mcp",
"headers": {
"Authorization": "<YOUR_AUTHORIZATION>"
}
}
}
}9 tools, verified live
get_api_keyGet your own free API key for this server (no account needed; 25 email verifications per day). Optional: the verification tools already work without a key on a shared trial. Returns the key once — reconnect with 'Authorization: Bearer <api_key>' for your own quota and the list tools.
get_credit_balanceGet the current credit balance and a short usage summary for the account.
list_listsList the user's bulk verification lists/jobs, most recent first.
get_listGet the details of a single bulk verification list by its id.
explain_resultExplain what a verification status or reason means in plain English, with a send recommendation. Covers valid, invalid, catch-all/accept-all, unknown, greylisted, disposable, role, free, spam-trap, abuse, do-not-mail, no-mx, disabled, and network. Use when a user asks what a result means.
verify_emailVerify the deliverability of a single email address. Returns a verdict (valid, invalid, risky, unknown). Costs 1 credit.
verify_batchVerify a batch of email addresses (up to 25 per call with an agent key). Returns per-email verdicts and saves a list. Costs 1 credit per email.
estimate_costEstimate the credit cost of a verification before running it, and whether the user can afford it. Provide either a count of emails, a list_id to re-verify, or an operation ('single'/'finder'). Always quote this before proposing anything billable.
get_batch_statusGet the progress and status of a bulk verification list/job by id.
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