email-security MCP servers & tools

Domain security reconnaissance for AI agents. 13 tools — DNS + DNSSEC, SSL/TLS chain & grade, HTTP security headers, SPF/DKIM/DMARC email auth, TCP port scan, ASN, RDAP/WHOIS — plus a one-shot securityscan returning a 0-100 Health Score (A–F). Free, no API key. npx -y dechonet-mcp

Free DNS and email security scanner for AI assistants. DNS, SPF, DKIM, DMARC, DNSSEC, MTA-STS, BIMI, TLS/STARTTLS, FCrDNS, CAA, TLSA/DANE, blacklist and full-deliverability checks, plus security-header/CSP analysis and bookmarkable report snapshots, via the IntoDNS.ai API. No signup or API key. npx intodns-mcp

Domain security & privacy checker: 17 live checks (SPF, DMARC, DKIM, DNSSEC, TLS, CAA, security headers) scored 0-100 with remediation. Local-first, zero telemetry. In the official MCP Registry as com.oksigenia/checker-mcp; npm @oksigenia/checker-mcp.

Abnormal Security email threats, cases, and reporting in your terminal and your AI agents.

MCP server for SpamTitan email security — quarantine, allow/block lists, and policy management.

Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.

MCP server for Abnormal Security — AI-powered email threat detection, cases, and remediation.

MCP server for Check Point Harmony Email & Collaboration (Avanan) email security.

MCP server for Mimecast email security: message queue, held messages, domains, and threats.

MCP server for Proofpoint Essentials -- MSP org, domain, user, licensing, and reporting management.

MCP server for Proofpoint TAP — threat intelligence, forensics, quarantine, and email security.

Lightweight DMARC parser: auto-fetch email reports, visualize compliance in a single all-in-one app

MCP server for Ironscales phishing incident management — incidents, mailboxes, and reporting.