email security plugins

blisspixel/recon

Plugin Claude Code

Public-metadata domain intelligence for Microsoft 365 / Google Workspace tenant identification, email security observation (DMARC, DKIM, SPF, MTA-STS, BIMI), SaaS fingerprinting, certificate-transparency findings, and posture analysis. Bundles the recon MCP server and its usage guidance.

dnsdoctor/claude-plugin

Plugin Claude Code

Plugin marketplace listing 1 plugin: dns-doctor.

dnsdoctor/claude-plugin

Plugin Claude Code

Diagnose and fix a domain's email authentication (SPF, DMARC, DKIM, MX, blacklist, expiry). Returns deterministic verdicts and copy-paste fix records generated by a validating engine — never a guessed record.