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MailboxValidator

Indexed by io.github.MailboxValidator
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About

Email validation MCP server using the MailboxValidator API. It can validate email addresses.

Use this server

Add it to your MCP client. The catalogue lists this config verbatim from its source — it does not run, download, or vouch for the server. Review the command before you run it.

Transportstdio (runs a local command)
Env varsMAILBOXVALIDATOR_API_KEY
Claude Code 
claude mcp add --env MAILBOXVALIDATOR_API_KEY= mcp-mailboxvalidator -- npx mcp-mailboxvalidator
Cursor

Add to Cursor

If the button doesn't open Cursor, use the JSON below — Cursor accepts the same mcpServers config.

VS Code 
code --add-mcp '{"name":"mcp-mailboxvalidator","command":"npx","args":["mcp-mailboxvalidator"],"env":{"MAILBOXVALIDATOR_API_KEY":""}}'
JSON 
{
  "mcpServers": {
    "mcp-mailboxvalidator": {
      "command": "npx",
      "args": [
        "mcp-mailboxvalidator"
      ],
      "env": {
        "MAILBOXVALIDATOR_API_KEY": ""
      }
    }
  }
}

Environment variables are listed by name only — fill in your own values. Entries never carry secrets.