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SpamFixer Email Deliverability Check

Unverified Claim & verify → Communication

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

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Overview Installation

Overview

SpamFixer Email Deliverability Check is an MCP server that diagnoses why a domain's emails land in spam folders. It checks SPF, DKIM, DMARC, MX records, and blocklists to identify deliverability issues. The service is free and requires no login, letting any MCP-compatible AI assistant use its tools directly during conversations or agent runs.

The server runs as a remote endpoint at https://spamfixer.com/mcp with no local installation needed. Authentication is not required. The current release is v1.0.0, available from https://spamfixer.com/connector.

SpamFixer Email Deliverability Check is categorized as Communication on mcp.site and integrates with any MCP client including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. Maintainers are invited to claim this listing to earn the Verified badge and keep ownership information current.

▸Hosted endpoint — Streamable HTTP · https://spamfixer.com/mcp

Installation

Settings → Connectors → Add custom connector
Name: SpamFixer Email Deliverability Check
URL:  https://spamfixer.com/mcp

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