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MailValid Email Verification

by mailvalid.io · remote · no sign-in to list tools · v1.0.0 · published by io.mailvalid

Verify emails: syntax, MX, SMTP mailbox, disposable, role and catch-all checks. Single and bulk.

Deletes · 1Changes · 2
CompareRegistry entry

6 tools: 1 can delete or cancel things, 2 change things and 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http email-verifier https://mailvalid.io/mcp/ --header 'X-API-Key: <your-x-api-key>'

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Deletes or cancels 1Claude Code: deny
  • cancel_bulk_jobCancel a pending or processing bulk job and release any reserved credits.No findings

    Why it is in this group

    • The name "cancel_bulk_job" says "cancel": a word for removing or ending something.
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Cancel a pending or processing bulk job and release any reserved credits. Requires an API key.

    Annotations the server declares

    • title: Cancel a bulk job
    • readOnlyHint: false
    • destructiveHint: true
Changes things 2Claude Code: ask
  • submit_bulk_verificationQueue a list of emails for asynchronous verification.No findings

    Why it is in this group

    • The name "submit_bulk_verification" says "submit": a word for a change.
    Description, as the server wrote it
    Queue a list of emails for asynchronous verification. Reserves up to N credits (final charge settles on completion). Poll get_bulk_job for status and results. Optionally provide webhook_url for a completion callback. Requires an API key. Returns {job_id, status, total_emails, credits_reserved}.

    Annotations the server declares

    • title: Submit a bulk verification job
    • readOnlyHint: false
    • openWorldHint: true
  • verify_emailVerify a single email's deliverability (syntax, DNS/MX, SMTP mailbox, disposable / role / catch-all detection, confidence score).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Verify a single email's deliverability (syntax, DNS/MX, SMTP mailbox, disposable / role / catch-all detection, confidence score). Costs 1 credit for a billable result (valid/invalid/catch_all/do_not_mail), whether fresh or served from cache. `unknown` results are free. Requires an API key. Returns {success, credits_used, result}.

    Annotations the server declares

    • title: Verify an email address
    • readOnlyHint: false
    • openWorldHint: true
Only reads 3Claude Code: allow
  • get_bulk_jobGet the status, progress, and (when complete) results of a bulk job by its job_id.No findings

    Why it is in this group

    • The name "get_bulk_job" says "get": a word for reading.
    Description, as the server wrote it
    Get the status, progress, and (when complete) results of a bulk job by its job_id. Requires an API key.

    Annotations the server declares

    • title: Get a bulk job's status and results
    • readOnlyHint: true
  • get_credit_balanceReturn your current credit balance and lifetime usage.No findings

    Why it is in this group

    • The name "get_credit_balance" says "get": a word for reading.
    Description, as the server wrote it
    Return your current credit balance and lifetime usage. Requires an API key.

    Annotations the server declares

    • title: Get your credit balance
    • readOnlyHint: true
  • list_bulk_jobsList your recent bulk verification jobs (paginated, newest first).No findings

    Why it is in this group

    • The name "list_bulk_jobs" says "list": a word for reading.
    Description, as the server wrote it
    List your recent bulk verification jobs (paginated, newest first). Optionally filter by status. Requires an API key.

    Annotations the server declares

    • title: List your bulk jobs
    • readOnlyHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http email-verifier https://mailvalid.io/mcp/ --header 'X-API-Key: <your-x-api-key>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__email-verifier__get_bulk_job",
      "mcp__email-verifier__list_bulk_jobs",
      "mcp__email-verifier__get_credit_balance"
    ],
    "ask": [
      "mcp__email-verifier__verify_email",
      "mcp__email-verifier__submit_bulk_verification"
    ],
    "deny": [
      "mcp__email-verifier__cancel_bulk_job"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as email-verifier. Review it before you use it.