mailX

Diagnose domain authentication, DNS, and email delivery setup

Meet mailX

mailX provides a collection of tools for inspecting the technical setup behind email delivery. Users enter a domain or IP address to check live DNS records, mail routing, authentication, and blacklist status. Combined audits bring SPF, DKIM, DMARC, MX, and reputation checks into one report with explanations of detected issues.

Individual utilities cover DNS propagation, reverse DNS, SMTP and IMAP connectivity, and the generation of authentication records. Developers can access tools through a JSON API or MCP server, while the website provides a direct interface for marketers and domain owners. The results help identify configuration problems and plan corrections; they do not guarantee that a message will reach every recipient's inbox.

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Product details

Website: themailx.com
Status: Launched
Category: Marketing
Listed: Oct 15, 2026

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