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MailboxValidator

Verified Integration
Author: @MailboxValidator•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js

Client Configuration

— Connect MailboxValidator to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "mailboxvalidator": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-mailboxvalidator"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Validate email addresses using the MailboxValidator API to ensure deliverability, identify high-risk accounts, and detect temporary or free email providers.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for MailboxValidator

Using MailboxValidator helps you maintain a clean and valid email list, significantly improves email deliverability rates, reduces bounce rates, prevents sending to fraudulent or temporary addresses, and ultimately enhances the effectiveness of your email campaigns.

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