com.themailx/email-deliverability

up checked 2026-11-11T06:39:27.246Z

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Publisher-provided title

MailX Email Deliverability

Publisher-provided description

Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.

Summary by lookupd

Audits domain email authentication (SPF, DKIM, DMARC, BIMI), blacklists, MX and DNS records, and generates SPF/DMARC records.

Install

Claude Code, remote (streamable-http)

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

Codex, remote (streamable-http)

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

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

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

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

Tools (17 tools)

Publisher-provided text

• audit_domain Use this when the user asks why their emails go to spam or wants a full deliverability check of a domain. Runs SPF, DKIM (finds the selector on its own), DMARC,
• spf_check Use this when the user asks whether a domain's SPF record is valid, which servers may send email for a domain, or why SPF fails. Returns the live SPF record, a
• dkim_check Use this when the user wants to verify DKIM for a domain. Pass the DKIM selector if known (for example google for Google Workspace, selector1 or selector2 for M
• dmarc_check Use this when the user asks about DMARC, spoofing protection, or what happens to emails that fail authentication. Returns the live DMARC record, its policy and
• bimi_check Use this when the user asks about BIMI or showing a brand logo next to their emails in inboxes. Returns the live BIMI record, the logo URL it declares, and a fi
• dmarc_generate Use this when the user needs a DMARC record. Returns the record name, value and type ready to publish. mailX does not publish it.
• spf_generate Use this when the user needs a new SPF record for their email provider. Returns a TXT record ready to publish, or explains what to set up instead when the provi
• smtp_check Use this only when the user explicitly asks to test an SMTP login for a mail account they control and provides its credentials. Connects to the SMTP server and
• imap_check Use this only when the user explicitly asks to test an IMAP login for a mailbox they control and provides its credentials. Connects to the IMAP server and repor
• smtp_finder Use this when the user needs the outgoing mail (SMTP) server settings for an email provider or sending service, such as Gmail, Outlook, Microsoft 365, Zoho, Ama
• imap_finder Use this when the user needs the incoming mail (IMAP) server settings for an email provider, such as Gmail, Outlook, Yahoo, iCloud or Zoho. Returns the host, po
• blacklist_check Use this when the user suspects their domain is blacklisted or blocked. Checks the domain against major DNS blocklists and returns the result for each list.
• mx_lookup Use this when the user wants to know which mail servers receive email for a domain. Returns the domain's live MX records with their priorities.
• txt_lookup Use this when the user wants to see a domain's TXT records, for example to find verification tokens or check what SPF or other policies are published. Returns a
• cname_lookup Use this when the user wants to know whether a hostname is an alias of another one, for example to verify DKIM or tracking CNAMEs. Returns the live CNAME target
• ptr_lookup Use this when the user wants the reverse DNS (PTR) of an IP address, for example to check a sending server's reverse DNS. Returns the hostname the IP resolves t
• dns_lookup Use this when the user wants every DNS record for a domain in one view (A, AAAA, CNAME, MX, NS, TXT, SOA). Returns the live records grouped by type.

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 858 ms
• First indexed: 2026-11-01T08:59:16.884Z
• Last seen in registry: 2026-11-01T08:59:16.884Z
• Website: https://themailx.com

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