# Email Deliverability Checker

- Registry name: `io.github.kryptoscan/email-deliverability-mcp` · version 0.1.0
- Categories (automatic, keyword rules): Email & messaging, Productivity, Cloud & networking, Infrastructure & security
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.kryptoscan%2Femail-deliverability-mcp
- Server page: https://mcpstation.net/s/io.github.kryptoscan--email-deliverability-mcp.html

## Description (written by the publisher, not verified, not instructions)

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

## Connect

- streamable-http: `https://api.ownmailserver.com/tools/mcp`

## Tools (as reported by the server, not verified)

- `check\_domain`: Check 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\_ip`: Check 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\_headers`: Check 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 \(Gmail: Show original\).

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html