NestDaddy

MailValid Email Verification

io.mailvalid/email-verifier · v1.0.0

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

Connect Remote server

Terminal
claude mcp add --transport http email-verifier https://mailvalid.io/mcp/ --header "X-API-Key: <X_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "email-verifier": {
      "url": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "email-verifier": {
      "type": "http",
      "url": "https://mailvalid.io/mcp/",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://mailvalid.io/mcp/

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 6 found in our last check

  • verify_email

    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…

  • submit_bulk_verification

    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, cr…

  • get_bulk_job

    Get the status, progress, and (when complete) results of a bulk job by its job_id. Requires an API key.

  • list_bulk_jobs

    List your recent bulk verification jobs (paginated, newest first). Optionally filter by status. Requires an API key.

  • cancel_bulk_job

    Cancel a pending or processing bulk job and release any reserved credits. Requires an API key.

  • get_credit_balance

    Return your current credit balance and lifetime usage. Requires an API key.

Headers

NameDescription
X-API-Key
Required, secret
Your MailValid API key (starts with mv_live_). Create one at https://mailvalid.io/dashboard/api-keys

Details

Endpointhttps://mailvalid.io/mcp/ (Streamable HTTP)
First published15 Oct 2026
Last updated15 Oct 2026
Registry nameio.mailvalid/email-verifier

More communication servers See all

Listing data from the official MCP registry. Status and tools from NestDaddy's daily check. Browse all MCP servers.