SpamFixer Email Deliverability Check for VS Code

com.spamfixer/email-deliverability-check

Why do a domain's emails go to spam? Checks SPF, DKIM, DMARC, MX and blocklists. Free, no login.

client:VS Code transport:streamable-http tools:1

Install SpamFixer Email Deliverability Check in VS Code

.vscode/mcp.json

{
  "servers": {
    "email-deliverability-check": {
      "type": "http",
      "url": "https://spamfixer.com/mcp"
    }
  }
}

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