MailTester Email Verification for VS Code

com.mailtester/email-verification

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

client:VS Code transport:streamable-http tools:9

Install MailTester Email Verification in VS Code

.vscode/mcp.json

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

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