How to Use the MailerCheck MCP in Claude

Connect MailerCheck to Claude Desktop to verify email lists and track account credits directly from your chat window.

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Connect MailerCheck MCP to Claude Desktop

Create your Vinkius account to connect MailerCheck to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup MailerCheck with Claude Desktop

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Claude

Perplexity

Real-time email validation

Testing single addresses requires `verify_single_email` to hit the MailerCheck API instantly. You can ask your agent to check a suspicious address and it tells you if the syntax or domain is broken. This saves you from bouncing messages to dead inboxes. If you are drafting a pitch to a specific lead, run the check before you hit send.

Upload bulk lists for verification

Processing large lists relies on `create_verification_batch` to queue thousands of addresses at once. Hand your agent a CSV or text list and the MCP Server queues the entire payload for processing. Once the job finishes, check the status with `list_verification_batches`. You can then pull down the clean data using `get_batch_results` and export it back to your local filesystem.

Monitor your API balance

Checking your account quota with `get_account_info` prevents failed jobs due to empty balances. Your AI client reads your exact credit limit directly from the provider. Running out of credits mid-batch is frustrating. Verifying your account details first keeps your workflow moving without interruption.

Setup guide

Set up MailerCheck MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The MailerCheck MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the MailerCheck MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under mailercheck-mcp.

json

{
  "mcpServers": {
    "mailercheck-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by MailerCheck. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

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Real-time monitoring

Live

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Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

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Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about MailerCheck MCP in Claude Desktop

Open your Claude Desktop settings and click Developer. Edit the configuration file to include the server command. Save the file and restart the app completely.

Yes. You can connect a remote MailerCheck MCP Server URL directly in your browser. Go to Settings, find Integrations, and add a custom connector.

You probably ran out of API credits. Tell your agent to run the account info tool to check your balance. If you have credits, verify your batch name is formatted correctly.

The single verification endpoint returns results in milliseconds. It checks syntax, domain validity, and MX records instantly.

No. The integration passes your email addresses directly to the API and returns the validation status. Nothing is cached locally, and your raw contact data remains ephemeral within the chat context.

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