app.openkrill/mailcheck

up checked 2026-11-11T10:38:43.475Z

Unclaimed · Unverified

Publisher-provided title

Domain Mail Check

Publisher-provided description

Check a domain's email DNS, whether Gmail and Outlook accept its mail, and its registration.

Summary by lookupd

Checks a domain's email DNS, mail provider acceptance at Gmail and Outlook, sender auth, and registration details.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http mailcheck https://mailcheck.openkrill.app/mcp

Codex, remote (streamable-http)

codex mcp add mailcheck --url https://mailcheck.openkrill.app/mcp

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

{
  "mcpServers": {
    "mailcheck": {
      "url": "https://mailcheck.openkrill.app/mcp"
    }
  }
}

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

Publisher-provided text

launch_score Use this when the user asks whether a new or secondary domain is ready for cold email or outreach, or wants a score for a sending domain, such as "is acme-mail.
delivery_check Use this when the user asks whether mail from a domain will reach Gmail or Outlook, or why it is rejected or goes to spam, such as "will Gmail accept mail from
check_dns_hygiene Use this when the user asks about a domain's CAA record, DNSSEC, whether its mail servers offer STARTTLS, dangling CNAMEs or subdomain takeover risk, such as "d
check_email_auth Use this when the user asks whether a domain's email is set up correctly, such as "is DMARC set up for github.com?" or "check SPF and DKIM for example.com". Pas
check_dns_records Use this when the user asks for a domain's DNS records, its mail provider or which certificate authorities may issue for it, such as "which mail provider does a
lookup_domain_registration Use this when the user asks who a domain is registered with or when it expires, such as "when does openai.com expire and who is the registrar?". Pass the domain
submit_feedback Send feedback, a bug report or a tool request to the maintainers of the tools on this server: a missing tool, missing or stale data, or a tool that broke or gav
get_feedback_reply Read the maintainers' reply to feedback you sent with submit_feedback, given its ticket id. Returns status pending until a reply is ready, then status answered

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/app.openkrill/mailcheck.svg)](https://lookupd.com/servers/app.openkrill/mailcheck)