Email Deliverability Checker

io.github.kryptoscan/email-deliverability-mcp · v0.1.0 · communication

Email Deliverability Checker is healthy: it completed an MCP handshake in 930 ms and exposes 3 tools.

Check SPF, DKIM, DMARC, blocklists, reverse DNS and email headers against Gmail/Yahoo sender rules.

Endpoint: https://api.ownmailserver.com/tools/mcp (streamable-http)

Repository · Website · JSON · Add to my inventory

Facts

Users (last 30 days)0
HandshakeHealthy
Auth neededNone
Tool count3
Latency930 ms
Last checked (UTC)2026-10-27T06:15:14.264Z

Health history

Checked (UTC)StatusLatencyError
2026-10-27T06:15:14.264ZHealthy930

Tools (3)

check_domainCheck a domain's SPF (including the 10-DNS-lookup limit), DMARC policy and reporting, DKIM keys on common selectors, and MX records. Returns problems ranked by severity with the fix for each, plus the email services the domain uses.
check_sending_ipCheck a mail server's IP: reverse DNS (PTR) and whether it resolves back to the IP, and listings on Spamhaus ZEN, Barracuda, SpamCop, PSBL, Mailspike and UCEPROTECT level 1. A refused Spamhaus query is reported as unknown, never as a listing.
check_email_headersCheck a received email's headers against Gmail's and Yahoo's bulk sender requirements: SPF, DKIM and DMARC results, From domain alignment, one-click unsubscribe (and whether DKIM covers it), TLS, reverse DNS and Message-ID. Use the full headers as the recipient got them (Gmail: Show original).