mailX

Email deliverability tools for AI agents — check SPF, DKIM, DMARC, BIMI, blacklists, SMTP/IMAP connectivity, and generate DNS records.

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Category Agents
Added May 23, 2026
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mailX exposes 20+ email deliverability and DNS tools via MCP, organized into five categories: authentication checks (SPF, DKIM, DMARC, BIMI), deliverability diagnostics (blacklist scanning, SMTP/IMAP testing), DNS lookups (MX, TXT, CNAME, PTR), record generators, and connectivity testing. No authentication required. Built as a free alternative to MXToolbox with a clean JSON API.

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