SpamFixer Email Deliverability Check

by FastDrop

MCP MCP VERIFIED Verified 1 hour ago Registry import free

Why do a domain's emails go to spam? Checks SPF, DKIM, DMARC, MX and blocklists. Free, no login.

Why do a domain's emails go to spam? Checks SPF, DKIM, DMARC, MX and blocklists. Free, no login. Official MCP Registry: com.spamfixer/email-deliverability-check@1.0.0. Remote endpoint: https://spamfixer.com/mcp

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Remote MCP endpoint ingested from the official registry and probed by FastDrop.

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as com.spamfixer/email-deliverability-check and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.

Claim this listing

Tools this endpoint exposes

Read directly from the endpoint on 28 Oct 2026. Not supplied by the maker.

check_email_deliverability
Check why emails from a domain might land in spam. Looks up the domain's public DNS: SPF, DKIM (common selectors), DMARC, MX, and whether its mail servers are on major blocklists. Returns a 0-100 sco