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DemiSignal

Claude connectorCommunity

Check any domain's email authentication (DMARC, SPF, DKIM, MX, BIMI, MTA-STS) and generate SPF and DMARC records.

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3

exposed by this connector

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Developer tools1,033rd of 1,084 by popularity · not ranked by trending score
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DemiSignal checks a domain's live DNS and grades its email authentication, so you can see why mail lands in spam or fails DMARC without leaving the conversation.

  • check_domain: grades DMARC, SPF, DKIM (common selectors), MX, BIMI and MTA-STS. Returns each record, its status and the issues found, with a fix guide for every issue and a link to the full report.
  • generate_spf_record: builds an SPF record from the services and servers that send your mail, and counts DNS lookups against SPF's limit of 10.
  • generate_dmarc_record: builds a DMARC record and the host to publish it at, from your policy and report addresses.

No account or API key needed. The generators compute from your input only; nothing is looked up or stored. For ongoing monitoring and DMARC report analysis, connect the domain at demisignal.com.

Tools

  • check_domain
  • generate_dmarc_record
  • generate_spf_record
Categories
Made by
DemiSignal · Website
Sign-in
Not required
Connector URL
https://demisignal.com/mcp
Transport
Streamable HTTP
Works with
Claude, Claude API, Claude Code, Claude Desktop
Added
October 14, 2026
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