MailTester Ninja for VS Code

ninja.mailtester/email-verification

Verify email addresses live against their mail server and find work emails. Nothing stored.

client:VS Code transport:streamable-http tools:2

Install MailTester Ninja in VS Code

.vscode/mcp.json

{
  "servers": {
    "email-verification": {
      "type": "http",
      "url": "https://mcp.mailtester.ninja/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs