com.couryo/tools

up checked 2026-11-10T17:37:19.943Z

Unclaimed · Unverified

Publisher-provided title

Couryo free email tools

Publisher-provided description

Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.

Summary by lookupd

Checks email addresses and domain DNS (SPF, DKIM, DMARC), explains SMTP errors, and generates SPF and DMARC records.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http tools https://mcp.couryo.com/tools

Codex, remote (streamable-http)

codex mcp add tools --url https://mcp.couryo.com/tools

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

{
  "mcpServers": {
    "tools": {
      "url": "https://mcp.couryo.com/tools"
    }
  }
}

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

Publisher-provided text

verify_email Checks one email address without sending anything: format, typo in big providers ("gmail.com.br" → "gmail.com", "hotmial.com"), disposable inbox, shared mailbox
verify_emails Batch of verify_email: the same checks for up to 100 addresses at once, one verdict each (valid, risky, invalid) plus the totals. Run it before a send and drop
check_domain_dns Checks the email setup of any domain: SPF (one record, ending, the 10 DNS lookup limit), DKIM on the common selectors (or dkim_selector), DMARC policy and repor
explain_smtp_error Explains a bounce or SMTP error text ("550 5.7.515 Access denied", "452 4.2.2 mailbox full") in plain words: hard (the address does not work), soft (temporary)
generate_spf Builds one SPF record (TXT at the domain) from the services that send for it: includes, IPv4 and IPv6, mx and a. Starts with ~all (softfail), the safe choice; u
generate_dmarc Builds one DMARC record (TXT at _dmarc.<domain>). Start with policy none and a report address (rua), read the reports, then move to quarantine and reject once e

Shows this live status and links here; updates hourly.

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