com.spamfixer/email-deliverability-check

up checked 2026-11-11T05:38:04.349Z

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Publisher-provided title

SpamFixer Email Deliverability Check

Publisher-provided description

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

Summary by lookupd

Checks a domain's public DNS email records (SPF, DKIM, DMARC, MX) and blocklist status to diagnose spam placement.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http email-deliverability-check https://spamfixer.com/mcp

Codex, remote (streamable-http)

codex mcp add email-deliverability-check --url https://spamfixer.com/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "email-deliverability-check": {
      "url": "https://spamfixer.com/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (1 tools)

Publisher-provided text

• check_email_deliverability Check why emails from a domain might land in spam. Looks up the domain's public DNS: SPF, DKIM (common selectors), DMARC, MX, and whether its mail servers are

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 482 ms
• First indexed: 2026-11-01T08:58:30.063Z
• Last seen in registry: 2026-11-01T08:58:30.063Z
• Website: https://spamfixer.com/connector

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[![lookupd status](https://lookupd.com/badge/com.spamfixer/email-deliverability-check.svg)](https://lookupd.com/servers/com.spamfixer/email-deliverability-check)

• 62141 servers
• Last crawl: 2026-11-11T18:39:04.612Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp