What is the accuracy of MailerCheck verification?

MailerCheck uses advanced multi-layer checks including syntax, DNS, and SMTP handshake to provide highly accurate results categorized into valid, risky, and invalid.

Can I verify large lists of emails?

Yes, use the `create_verification_batch` tool to upload a JSON array of email addresses. You can then monitor the progress and retrieve results once completed.

How do I check my remaining credits?

Use the `get_account_info` tool to retrieve your profile details and the current balance of verification credits in your account.

MailerCheck MCP Server for VS Code Copilot 5 tools — connect in under 2 minutes

Name: MailerCheck
Availability: InStock
Author: Vinkius

code.visualstudio.com/docs/copilot/chat/mcp-servers

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GitHub Copilot in VS Code is the most widely adopted AI coding assistant, embedded directly into the world's most popular code editor. With MCP support in Agent mode, Copilot can access external data and APIs to generate context-aware code grounded in real-time information.

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Classic Setup·json

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

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About MailerCheck MCP Server

Connect your MailerCheck account to any AI agent to automate your email hygiene and deliverability workflows. This MCP server enables your agent to verify single email addresses instantly, manage batch verification lists, and monitor your account credits directly from natural language interfaces.

GitHub Copilot Agent mode brings MailerCheck data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 5 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.

What you can do

Real-time Verification — Instantly check if an email address is valid, risky, or invalid before sending
Batch Processing — Upload large lists of emails for asynchronous validation and track their progress
Results Ingestion — Retrieve detailed status reports for completed batches, including reason codes for invalid emails
History Oversight — List all recent verification batches and retrieve their technical metadata
Account Auditing — Monitor your authenticated user details and remaining verification credits

The MailerCheck MCP Server exposes 5 tools through the Vinkius. Connect it to VS Code Copilot in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect MailerCheck to VS Code Copilot via MCP

Follow these steps to integrate the MailerCheck MCP Server with VS Code Copilot.

Create MCP config

Create a .vscode/mcp.json file in your project root

Add the server config

Paste the JSON configuration above

Enable Agent mode

Open GitHub Copilot Chat and switch to Agent mode using the dropdown

Start using MailerCheck

Ask Copilot: "Using MailerCheck, help me...". 5 tools available

Why Use VS Code Copilot with the MailerCheck MCP Server

GitHub Copilot for Visual Studio Code provides unique advantages when paired with MailerCheck through the Model Context Protocol.

VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor

Project-scoped MCP configs (`.vscode/mcp.json`) let you commit server configurations to your repository, ensuring the entire team shares the same tool access

Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop

GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services

MailerCheck + VS Code Copilot Use Cases

Practical scenarios where VS Code Copilot combined with the MailerCheck MCP Server delivers measurable value.

Live API integration: Copilot can query an MCP server, inspect the response schema, and generate typed API client code in the same step

DevSecOps workflows: security teams can give developers access to domain intelligence tools directly in their editor for real-time vulnerability assessment during code review

Data pipeline development: Copilot fetches sample data via MCP and generates transformation scripts, validators, and test fixtures from actual API responses

Documentation generation: Copilot queries available tools and auto-generates README sections, API reference docs, and usage examples

MailerCheck MCP Tools for VS Code Copilot (5)

These 5 tools become available when you connect MailerCheck to VS Code Copilot via MCP:

create_verification_batch

Requires a name and a list of emails. Upload a list of emails for batch verification

get_account_info

Get account details and credit balance

get_batch_results

Retrieve the results for a specific batch

list_verification_batches

List all recent verification batches

verify_single_email

Requires an email string. Verify a single email address in real-time

Example Prompts for MailerCheck in VS Code Copilot

Ready-to-use prompts you can give your VS Code Copilot agent to start working with MailerCheck immediately.

"Verify the email address 'user@example.com' in MailerCheck."

"List all my recent verification batches."

"Show valid emails for batch ID '123'."

Troubleshooting MailerCheck MCP Server with VS Code Copilot

Common issues when connecting MailerCheck to VS Code Copilot through the Vinkius, and how to resolve them.

MCP tools not available

Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.

MailerCheck + VS Code Copilot FAQ

Common questions about integrating MailerCheck MCP Server with VS Code Copilot.

Which VS Code version supports MCP?

MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.

How do I switch to Agent mode?

Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.

Can I restrict which MCP tools Copilot can access?

Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.

Does MCP work in VS Code Remote or Codespaces?

Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.